EOVSA Wiki - User contributions [en]

2018 July

2018-07-07T05:15:42Z

Nkuroda: /* Jul 07 */

[http://www.ovsa.njit.edu/wiki/index.php/Expanded_Owens_Valley_Solar_Array#Observing_Log Back to Observing Log]

== Jul 07 ==
'''04:50 UT''' The high-frequency delay was updated due to the accumulated delay slope since June 14 (Dale set it during onsite visit).

2018 July

2018-07-07T04:27:00Z

Nkuroda: Created page with "[http://www.ovsa.njit.edu/wiki/index.php/Expanded_Owens_Valley_Solar_Array#Observing_Log Back to Observing Log] == Jul 07 == '''04:19 UT''' The high-frequency delay was updat..."

[http://www.ovsa.njit.edu/wiki/index.php/Expanded_Owens_Valley_Solar_Array#Observing_Log Back to Observing Log]

== Jul 07 ==
'''04:19 UT''' The high-frequency delay was updated due to the accumulated delay slope since June 14 (Dale set it during onsite visit).

Owens Valley Solar Arrays

2018-07-07T04:24:32Z

Nkuroda: /* Observing Log */

[[File:Eovsa1.png|border|text-top|800px]]

<big>[http://ovsa.njit.edu/ EOVSA] (Expanded Owens Valley Solar Array) is a new solar-dedicated radio interferometer operated by the New Jersey Institute of Technology. This wiki serves as the site for EOVSA documentation. </big>

== EOVSA Documentation ==

* <big>General</big>
** [[Downconversion and Frequency Tuning]]
** [[Dealing with Radio Frequency Interference]]
** [[Switching between 200 MHz and 300 MHz Correlator]]

* <big>Computer-Network</big>
** [[Computing Systems]]
** [[Network]]

* <big>Control System</big>
** [[27-m Antenna Commands]]
** [[Schedule Commands]]
** [[Control Commands]]
** [[Attenuation and Level Control]]

* <big>Hardware</big>
** [[Hardware Overview]]
** [[2.1-m Antennas]]
** [[27-m Antennas]]

* <big>Software</big>
** [[Calibration Database]]
** [[Stateframe Database]]
** [[Create CASA measurement sets]]

* <big>Calibration</big>
**[[Calibration Overview]]
**[[Pointing Calibration]]
**[[Total Power Calibration]]
**[[System Gain Calibration]]
**[[Reference Gain Calibration]]
**[[Daily Gain Calibration]]
**[[Delay Calibration]]
**[[Bandpass Calibration]]
**[[Polarization Calibration]]
**[[Antenna Position]]
**[[Calibrator Survey]]

* <big>[[Starburst]]</big>

== Using EOVSA Data ==

* <big>Software Basics</big>
** [https://casaguides.nrao.edu CASA Guides]
** [http://www.atnf.csiro.au/computing/software/miriad/userguide/userhtml.html Miriad Guides]
** [http://www.lmsal.com/solarsoft/ SolarSoft IDL]
** [[Basic GitHub Tutorial]]

* <big>EOVSA Data Analysis Guide</big>
** [[Spectrogram Software]]
** [[Imaging]]
**[[Flare Imaging]]

* <big>EOVSA Modeling Guide</big>
**[[GX Simulator]]

* <big>[[EOVSA Imaging Workshop]]</big>

== System Software ==

* LabVIEW software
* Python code [https://github.com/dgary50/eovsa Github repository]

== Observing Log ==
[[2016 November]]

[[2016 December]]

[[2017 January]]

[[2017 February]]

[[2017 March]]

[[2017 April]]

[[2017 May]]

[[2017 June]]

[[2017 July]]

[[2017 August]]

[[2017 September]]

[[2017 October]]

[[2017 November]]

[[2017 December]]

[[2018 January]]

[[2018 February]]

[[2018 March]]

[[2018 April]]

[[2018 July]]

== Tohbans ==

[[Trouble Shooting Guide]]

[[Tohban Records]]

== Flare List ==

See [http://ovsa.njit.edu/jay/rd_db.php this link] for a more updated version of EOVSA flare list.

{| class="wikitable" style="text-align: center; width: 1200px; height: 200px;"
|-
| '''Date''' || '''RHESSI Time''' || '''RHESSI Lightcurve''' || '''XSP Data''' || '''RHESSI Coverage''' || '''RHESSI Energy Range (keV)''' || '''EOVSA Time''' || '''EOVSA Image''' || '''GOES Class''' || '''Baseline Plot'''
|-
| Jun 3, 2017 || 21:43:25 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/06/03/hsi_20170603_212240_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170603213511.png XSP] || Yes || 6 - 12 || 21:42:00 || || B2.0 || [[TBD | Error]]
|-
| " || 19:29:19 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/06/03/hsi_20170603_181420_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170603173511.png XSP] || Yes || 12 - 25 || 19:24:00 || || C2.5 || [[:File:UDB20170603173518.png | Plot]]
|-
| Jun 2, 2017 || 19:55:54 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/06/02/hsi_20170602_184040_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170602173511.png XSP] || Yes || 6 - 12 || 19:50:00 || || B7.0 || [[:File:UDB20170602173518.png | Plot]]
|-
| " || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/06/02/hsi_20170602_170640_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170602173511.png XSP] || No || || 17:55:00 || || C8.0 || [[:File:UDB20170602173518.png | Plot]]
|-
| Jun 1, 2017 || 20:27:40 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/06/01/hsi_20170601_190640_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170601173511.png XSP] || Yes || 6 - 12 || 20:25:00 || || C1.1 || [[:File:UDB20170601173518.png | Plot]]
|-
| " || 18:04:25 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/06/01/hsi_20170601_173240_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170601173511.png XSP] || Yes || 6 - 12 || 17:55:00 || || C1.4 || [[:File:UDB20170601173518.png | Plot]]
|-
| " || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/06/01/hsi_20170601_173240_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170601173511.png XSP] || No || || 17:37:00 || || C1.0 || [[:File:UDB20170601173518.png | Plot]]
|-
| May 31, 2017 || 23:14:45 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/05/31/hsi_20170531_224100_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170531213511.png XSP] || Yes || 12 - 25 || 23:12:00 || || C2.0 || [[TBD | Error]]
|-
| " || TBD || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/05/31/hsi_20170531_210700_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170531213511.png XSP] || Yes || || 22:20:00 || || B9.8 || [[TBD | Error]]
|-
| " || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/05/31/hsi_20170531_193240_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170531205112.png XSP] || No || || 20:54:00 || || C1.3 || [[TBD | Error]]
|-
| May 28, 2017 || 19:28:10 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/05/28/hsi_20170528_191440_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170528173511.png XSP] || Yes || 25 - 50 || 19:27:00 || || C3.2 || [[:File:UDB20170528173520.png | Plot]]
|-
| May 6, 2017 || 20:07:24 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/05/06/hsi_20170506_194540_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170506180511.png XSP] || Yes || 6 - 12 || 20:06:49 || || B3.5 || [[:File:UDB20170506180518.png | Plot]]
|-
| April 21, 2017 || 17:27:25 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/21/hsi_20170421_170640_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170421141111.png XSP] || Yes || 6 - 12 || 17:26:51 || || B4.1 || [[:File:UDB20170421141120.png | Plot]]
|-
| April 17, 2017 || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/17/hsi_20170417_233740_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170417232011.png XSP] || No || || 23:45:51 || || B2.0 || [[:File:UDB20170417232020.png | Plot]]
|-
| " || 21:40:04 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/17/hsi_20170417_202920_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170417213511.png XSP] || Yes || 6 - 12 || 21:38:51 || || B7.5 || [[:File:UDB20170417213520.png | Plot]]
|-
| April 10, 2017 || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/10/hsi_20170410_171800_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170410173511.png XSP] || No || || 18:26:51 || || B4.8 || [[:File:UDB20170410173520.png | Plot]]
|-
| April 8, 2017 || 23:58:40 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/08/hsi_20170408_225240_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170408231011.png XSP] || Yes || 6 - 12 || 23:53:53 || || B2.3 || [[:File:UDB20170408231022.png | Plot]]
|-
| April 7, 2017 || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/07/hsi_20170407_183600_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170407191511.png XSP] || No || || 19:47:52 || || C4.3 || [[:File:UDB20170407191521.png | Plot]]
|-
| " || 00:23:45 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/06/hsi_20170406_234500_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170406233011.png XSP] || Yes || 12 - 25 || 00:23:52 || || C2.7 || [[:File:UDB20170406233021.png | Plot]]
|-
| April 5, 2017 || 17:38:20 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/05/hsi_20170405_162020_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170405173511.png XSP] || Yes || 6 - 12 || 17:38:51 || || B9.1 || [[:File:UDB20170405173520.png | Plot]]
|-
| " || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/05/hsi_20170405_144600_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170405142811.png XSP] || No || || 15:52:50 || || B5.9 || [[:File:UDB20170405142819.png | Plot]]
|-
| April 4, 2017 || 23:42:10 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/04/hsi_20170404_230340_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170404231511.png XSP] || Yes || 25 - 50 || 23:40:51 || [[:File:Eovsa_flare_20170404T233951.png | Image]] [http://www.ovsa.njit.edu/movies.html Movies] || C4.9 || [[:File:UDB20170404231520.png | Plot]]
|-
| " || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/04/hsi_20170404_182100_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170404191511.png XSP] || No || || 19:42:52 || || B9.4 || [[:File:UDB20170404191521.png | Plot]]
|-
| " || 00:39:35 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/03/hsi_20170403_233020_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170403231511.png XSP] || Yes || 12 - 25 || 00:37:49 || || C1.4 || [[:File:UDB20170404003935.png | Plot]]
|-
| April 3, 2017 || 23:51:49 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/03/hsi_20170403_233020_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170403231511.png XSP] || Yes || 12 - 25 || 23:44:49 || || C1.7 || [[:File:UDB20170403231518.png | Plot]]
|-
| " || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/03/hsi_20170403_184740_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170403191511.png XSP] || No || || 20:11:53 || || C5.0 || [[:File:UDB20170403191522.png | Plot]]
|-
| " || 01:00:44 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/02/hsi_20170402_235700_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170402213511.png XSP] || Yes || 25 - 50 || 01:00:52 || || M1.2 || [[:File:UDB20170402223521.png | Plot]]
|-
| April 2, 2017 || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/02/hsi_20170402_191420_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170402191511.png XSP] || No || || 20:31:49 || || M5.7 || [[:File:UDB20170402191518.png | Plot]]
|-
| " || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/02/hsi_20170402_174020_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170402173511.png XSP] || No || || 18:48:52 || || M2.1 || [[:File:UDB20170402173521.png | Plot]]
|-
| " || 16:25:30 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/02/hsi_20170402_160600_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170402143211.png XSP] || Yes || 12 - 25 || 16:24:50 || 6 sfu || C3.0 ||[[:File:UDB20170402143219.png | Plot]]
|-
| April 1, 2017 || 23:08:10 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/01/hsi_20170401_224940_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170401213511.png XSP] || Yes || 12 - 25 || 23:01:51 || 49 sfu || C5.1 || [[:File:UDB20170401213520.png | Plot]]
|-
| " || 21:48:35 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/01/hsi_20170401_211520_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170401213511.png XSP] || Yes || 50 - 100 || 21:46:51 || 286 sfu || M4.4 || [[:File:UDB20170401213520.png | Plot]]
|-
| " || 19:57:23 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/01/hsi_20170401_194120_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170401191511.png XSP] || Yes || 12 - 25 || 19:42:50 || 15 sfu || C3.7 || [[:File:UDB20170401191519.png | Plot]]
|-
| " || 15:37:25 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/01/hsi_20170401_145840_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170401143743.png XSP] || Yes || 12 - 25 || 15:55:21 || 2.5 sfu || B8.1 || [[:File:UDB20170401143750.png | Plot]]
|-
| March 31, 2017 || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/03/31/hsi_20170331_214220_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170331213511.png XSP] || No || || 22:57:49 || || C1.1 || [[:File:UDB20170331213518.png | Plot]]
|-
| March 29, 2017 || 23:27:10 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/03/29/hsi_20170329_223640_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170329213511.png XSP] || Yes || 6 - 12 || 23:40:50 || || B6.5 || [[:File:UDB20170329213519.png | Plot]]
|-
| March 25, 2017 || 23:34:44 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/03/25/hsi_20170325_225100_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170325213511.png XSP] || Yes || 6 - 12 || 23:44:50 || || B2.3 || [[:File:UDB20170327213520.png | Plot]]
|-
| February 23, 2017 || 20:52:00 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/02/23/hsi_20170223_202800_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170223191510.png XSP] || Yes || 6 - 12 || 20:52:50 || || C1.3 || [[:File:UDB20170223191519.png | Plot]]
|-
| " || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/02/23/hsi_20170223_185340_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170223191510.png XSP] || No || || 20:25:50 || || B5.8 || [[:File:UDB20170223191519.png | Plot]]
|-
| February 21, 2017 || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/02/21/hsi_20170221_225520_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170221220653.png XSP] || No || || 22:51:10 || || B3.0 || [[:File:UDB20170221220739.png | Plot]]
|-
| January 25, 2017 || 21:27:14 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/01/25/hsi_20170125_204400_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170125200011.png XSP] || Yes || 12 - 25 || 21:26:57 || || B8.5 || [[:File:UDB20170125200025.png | Plot]]
|}

== EOVSA Publications ==

This is the list of links to the publications (including posters) related to EOVSA.

[https://drive.google.com/open?id=14pg4PvsPdVMki8LpZUoNRQVxkysEl1Rt Kuroda et al. (2018): “Three-dimensional Forward-fit Modeling of the Hard X-ray and the Microwave Emissions of the 2015 June 22 M6.5 flare”, ApJ, 852, 32]

Trouble Shooting Guide

2018-07-05T18:27:48Z

Nkuroda: /* Stateframe */

This is a trouble shooting guide for tohbans monitoring EOVSA remotely using MobaXterm and VNC Viewer.

'''<General checklist for solar observation>'''

1. Check [http://ovsa.njit.edu/EOVSA/ant_status.php Antenna Status Page] to see if any antenna is under work.

2. In Schedule window, click "Today", "File", choose "Save" (overwrite if prompted), and "Go".

'''Since Feb. 2017, the schedule setup is slightly different.''' Do the following:

2.1. Load 'solar.scd' and hit Today. Save it (overwrite if prompted).

2.2. Open 'solar_plus3c84_Feb2017.scd' in Texteditor (in ~/Dropbox/PythonCode/Current folder).

2.3. Update the sunrise and the sunset time according to the solar.scd file that you just updated.

2.4. Update the PHASECAL (and refcal, which is 1-hr PHASECAL, if necessary) times by '''subtracting''' 4 minutes from each scan (to account for the day-to-day sidereal time shift of each calibrator source). Shift the times of previous and next lines (usually ACQUIRE and SUN) accordingly.

2.5. Save the updated 'solar_plus3c84_Feb2017.scd'. Don't forget to update the DATE as well.

2.6. Load the updated 'solar_plus3c84_Feb2017.scd' and hit Go.

3. '''Antenna Tracking''' - are all antenna tracking (in white color)?

4. '''Frequency Tuning''' - LO1A Sweep Status = "Sweeping", FSeqFile = FSEQ-FILE on the schedule, ErrorMsg = "No error"

5. '''Phase Tracking''' - "ON"

6. '''Power and Attenuation''' - Are all dBm on both H- and V- Channels within the second and third numbers shown in "AGC" on the schedule window? You can also see '''SaveList''' hpol and vpol to check this.

7. '''Temps''' - no fluctuation?

8. '''CryoRX''' - this is for antenna 14 control system. If it is down (Eg: FEMA Outlets & Receiver Voltage/Current values are zero and status is OFF), then issue the command 'ctlgo' in the terminal.

9. Make sure that [http://ovsa.njit.edu/EOVSA/status.php EOVSA Observing Status Page] is being updated and that the data is being recorded. You can check if the data is recorded by typing "ls /data1/IDB |tail" in DPP terminal too.

10. STOW antennas at the end of the observation, if needed (see [http://www.ovsa.njit.edu/wiki/index.php/Trouble_Shooting_Guide#Antenna_does_not_stow_.28Ant_10.29 possible problem with Ant 10])

11. Checking the PHASECAL plots [http://ovsa.njit.edu/phasecal/ PHASECAL plot page], if you notice any unusual noisy data on ants 9, 10, 11 or 13, generally it means the antenna did not stow properly on a previous occasion, so you should issue the commands (for example with ant 13):
step 1: stop ant13

step 2: stow ant13 (wait for it to completely stow--repeat steps 1 and 2 if it seems like it is not stowing after 5 minutes or so)

step 3: track ant13

 New! 12. After the day's observation is over, take a look at the results of all PHASECAL by going to [http://ovsa.njit.edu/phasecal/ PHASECAL plot page]. Note any scan that didn't go well '''without''' the effect of WINDSCRAM (if it was under WINDSCRAM then the data points would appear in red). Record your comments on them in tohban log at [http://ovsa.njit.edu/dev/tohban/ EOVSA tohban log page]. Log other activities during your duty.

 New! 13. Do the reference gain calibration analysis by following the procedures explained in [http://www.ovsa.njit.edu/wiki/index.php/Reference_Gain_Calibration Reference Gain Calibration] '''by 1 pm on the next day'''.



== Schedule window ==

=== I accidentally closed the schedule ===

1. Click "Schedule" (on the left task bar) '''just once'''.

2. Click "Today".

=== “Error: Could not write stateframe to SQL” ===

1. hit STOP on the schedule

2. type $scan-stop in Raw Command window (to stop the data recording)

3. close the schedule (exit out of it)

4. restart the program (by clicking on the icon at the left)

5. hit GO to start the observation again

=== Schedule window is frozen ===

1. Close the old one using command 'kill -9 #', where # is the number found by typing '''ps -elf | grep schedule.py''' in sched@helios (the number is at the fourth column from the left).

2. Click "Schedule" (on the left task bar) '''just once'''.

3. Make sure you load the correct schedule and hit "Go". Double-check everything in the system, and that data files are created.

== Stateframe ==

=== Stateframe is frozen ===

1. Close the old one using command 'kill -2 #', where # is the number followed by My PID on the right corner of the StateFrame, in the terminal of sched@helios. If you have accidentally closed the StateFrame without noting the PID, you can get it by typing '''ps -elf | grep sf_display''' in sched@helios, and looking at the number indicated in the '''fourth column from the left''' on the line that ends with "python /common/python/current/sf_display.py".

2. Open a new Stateframe from the menu on the left ('sf_display')

3. Check the log box of the new stateframe

=== “ACC down?” ===

1. Open pdudigital.solar.pvt on web browser

2. Go to “Actions”

3. Go to “Loads” (on the left)

4. Click item 14 (ACC)

5. Hit “Cycle” and “Ok” when prompted

After rebooting, if Stateframe hangs up & does not respond, open a new Stateframe and give "kill ##" (## = “My PID” on the upper right corner of frozen Stateframe) command to sched@helios.solar.pvt server.

=== ACC Restart ===

After the above procedure, or any time the ACC reboots, it loads from its own disk and this appears to cause glitches in the recorded data due to some synchronization problem. For some reason not understood, the glitches go away when the ACC is loaded from the win computer. To do this,
* Start LabVIEW on the win computer if it is not already open, and click on EOVSA-LabVIEW 2015.lvproj (this may already be open).
* In the new Project Explorer window, under Targets, expand the acc item and right click on acc, then choose Connect from the drop down menu.
* After connecting, click on ACC Master.vi and select Apply.
* Now under the Startup folder in the Project Explorer, right-click ACC Master.vi and select Run.
* In the window that pops up, start it (by selecting the white arrow at the top of the window)
* After it starts successfully, right click on acc in the Project Explorer and choose Disconnect.
* Now you can close the ACC Master.vi window

Note: Rebooting the ACC kills the dppxmp program, so you need to rmlock on the DPP to allow it to run again. It also kills the sf_display, see above.

=== CryoRX tab - Status are OFF, all values are zeroes (Checklist #7 is false)===

What you should be seeing is that FEMA Outlets and Receiver Voltages/Currents are all zeroes, and Status are all OFF (except for Noise Diode, and RFSwitch when using low frequency receiver). This means that the control system for receiver has died. You would still see that antennas are tracking fine and data is recorded, and it doesn't mean that these data are "wrong" or "unusable". They have to be ON and non-zeroes whenever you want to change receiver setting or modify attenuation setting, which sometimes happens during the observation.

<del>To reboot, execute "starburstControl start" in antctl@feanta server (ssh connect from helios, if disconnected).</del>

<12/18/2016> To reboot, just type "ctlgo" in a terminal window on helios in VNC Viewer (you may have to stop the schedule). If for any reason you want to stop the control system, type "ctlstop".

=== Antenna(s) down ===

'''Don’t forget to check the [http://ovsa.njit.edu/EOVSA/ant_status.php Antenna Status page] before considering to “fix” any of the antennas!!'''

Symptoms: Not tracking, showing ‘AT STOW’ or other unwanted coordinates, both AZ and EL permits ON or only EL permit ON, or Axis Lock is ON

Please be noted that the old antennas don't have power controller so $pcycle command won't work on them.

1. Ant 9, 10, 11, 13 could be in this state early in the schedule because they just can't move to commanded position (out of declination limit). In this case, you just have to wait a while (~few hours?)

2. In cold morning, large spike in the current may cause large position error in AT STOW state.

3. Proceed if neither #1 nor #2 is the case. If only AZ permit is ON (the first column), try "reboot 1 ant2" for rebooting ant2, for example.

4. If both AZ and EL permit is ON (the second column) or only EL permit is ON, then give command "$pcycle ant2" for resetting antenna 2. This switches OFF the power to antenna for 15 seconds and switches ON. In Communication tab, Ant 2 line will go red. Wait till it becomes white. If it does not become white, then try "sync ant2". If cRIO does not respond to this, it may be in “safe mode”, in which case you can type "$pcycle crio ant2" (if on ants 1-8 or 12) and it will cycle the power on the cRIO. Note that cRIO takes at least 2 minutes to reboot and come back online. If this sequence does not work, you may try $pcycle again, but keep in mind that this command in general should only be used when needed (i.e. discouraged if it can be avoided), to save wear and tear on the components.

5. Give "tracktable [the current tracktable ***.radec] ant2" and "track ant2" to initiate the tracking. If this does not work, look for temperature to raise (if temperature is low).

=== Ant14's cRIO's "Ant" value (last column) is showing negative value ===

What you may see is that ant14's cRIO's "Ant" value (the very last column) showing negative value (not necessarily the extremely large value like you see for some antennas that are down, but some random number with negative sign). When you observe this, go to "ant14.solar.pvt" on web browser and see if it says in red "Slot1 - Maths error" on the left side. It is believed to occur when the controller is interpolating coordinates for the last-entered track table, and the calculation blows up (i.e. pcal_tab.radec file would have had a day change in it when it was not supposed to).

This should not happen beyond 12/18/2016, but if you observe it beyond this date, '''report to Dr. Gary''', and proceed to do the followings:

1. In "ant14.solar.pvt", go to "Log-in" and log-in (if you need ID/PW, ask Dr. Gary or Natsuha.)

2. Click "Parameters", then select "#10 - Status And Trips".

3. Choose "#10.00".

4. Enter "1070" to "Update values", and hit "change".

5. Go to 'parameter drop down' tab under the 'menu' tab, and choose "#38 - User Trip".

6. Enter "100" to "Update values", and hit "change".

This is supposed to reset the controller. Watch for cRIO's Ant value changes to positive values. Take note on the time you did this procedure, and report it to Dr. Gary.

=== BRIGHTSCRAM ===

Find out which antenna is experiencing this by looking at [http://ovsa.njit.edu/fits/images/ FITS image files]. BRIGHTSCRAM should appear as data-gap like features on the dynamics spectra. If more than two antennas are having BRIGHTSCRAM, then ALL antennas show BRIGHTSCRAM.

Wait for a while (~10 min) to see if it automatically goes away. After it goes away, give "tracktable [the current tracktable ***.radec] ant#" and "track ant#" to initiate the tracking.

=== Frequency Tuning's Sweep Status is “stopped” or "Queue overflow" ===

1. Try "Stop" and "Go" the schedule.

2. If #1 does not work, try "lo1a-reboot" in Raw command window

3. If #2 does not work, try the following raw commands:

<pre>
fseq-off
fseq-init
fseq-file [the current frequency receiver setting ***.fsq] (should be in the right side of the schedule window, like solarhi.fsq)
fseq-on
</pre>

=== Temperature is fluctuating too much ===

Try rebooting the temperature controller by typing "tec$bc ant2" for ant2, for example (tec => Thermo-Electric Controller).

=== nd-on is on (Attenuation) ===

Send "nd-off ant#" raw command to turn off the local noise diode.

[[File:2016-04-13_hpol.png|thumb|upright=2.0|'''Figure 1:''' Example of the oscillation from unbalanced attenuation for ant 12 (orange).]]

[[File:2016-04-15_hpol.png|thumb|upright=2.0|'''Figure 2:''' Example of the oscillation from unbalanced attenuation for ant 2 (red) and 5 (cyan).]]

=== hpol/vpol plot (Savelist) is showing unusual oscillating behavior ===

What you should see is the dBm values of the antenna fluctuating very violently like in '''Figure 1''' and '''2'''. Notice that the amplitude of the fluctuation is ~3 dB, which was one FEMATTN step (at this date). This happens when hattn/vattn settings of the antenna get changed somehow and two polarizations get very unbalanced. The result is that the automatic gain control is not being able to find a happy level for both at the same time, and went into an oscillation. To calm it down, first issue the commands:

<pre>femauto-off ant#
hattn 0 0 ant#
vattn 0 0 ant#</pre>

which turns off the automatic gain control. '''If the antenna is on the Sun, temporarily move it off the Sun using'''
<pre>
radecoff 0 10 ant#
</pre>
With the antenna off the Sun, set the hattn and vattn settings until both power levels are around 3 dB, i.e.:
<pre>
hattn 0 12 ant#
vattn 0 11 ant#
</pre>
where the choice of attenuations (12 and 11 in this example) are those that set the power level close to 3 dB. Finally, turn the gain control back on, with

<pre>
femauto-on ant#
</pre>

'''If you issued the radecoff command, be sure to remove it with'''
<pre>
radecoff 0 0 ant#
</pre>

If the fluctuation is within one FEMATTN step (2 dB as of 12/12/16, check [http://www.ovsa.njit.edu/wiki/index.php/Schedule_Commands#FEMATTN_level_.5Bantennalist.5D Schedule Command - FEMATTN level]), the cause might be just interference. In this case, leave it for a while and see if the oscillation goes away.

=== Antenna does not stow (Ant 10) ===

This mostly seems to happen on Ant 10 (as of ~July 2017). The symptom is that Ant 10 keeps staying at "TO STOW" status while all other (old) antennas are AT STOW already at the end of the observation. You might have tried the command "stow ant10", but it did not change the status. If this continues for more than a minute or so, it is likely that the antenna is running into a limit, and cannot be stowed properly with just "stow ant10" command (you also cannot trust if it does go to STOW by itself much later). To properly stow the antenna, '''issue "stop ant10" first''', then do "stow ant10". You may need to do this multiple times. If you don't properly stow the antenna this way, it may not start tracking automatically next morning, and you will miss the data from this antenna.

=== Antenna tab is blank and an attempt to switch to it causes the Stateframe to freeze ===

This occurred around early June of 2017. The cause turned out to be a change in numpy behavior. Dr. Gary updated the numpy at some point and a subtle difference caused it. This means that we should think about software upgrade as one of the causes of malfunctions of our system sometimes.

=== Antenna shows (Lo or Hi) Hard limit and does not track ===

If a hard limit of any azel antenna (1-8 or 12) is ON, follow this procedure into the Raw Command window of the schedule (with no typos).

1. Make sure that other antennas are tracking a source and that no source changes are coming up within the next minute or so.

2. Put antenna in velocity mode with

<pre>
runmode 2 ant# (e.g for antenna 6, use "runmode 2 ant6")
</pre>

Be sure to specify the antenna, otherwise ALL antennas will move.

3. Drive the antenna OFF the limit in velocity mode.
<pre>
<axis>velocity <speed> ant# (e.g "azimuthvelocity 5000 ant6" for which antenna 6 begins to move in azimuth, to drive off the Lo limit)
</pre>
If the limit is on the azimuth axis, set <axis>velocity as "azimuthvelocity". If the limit is on the elevation axis, set <axis>velocity as "elevationvelocity".
To drive off a low limit, use a positive velocity 5000. To drive off a high limit, use a negative velocity -5000. Units are 1/10000th of a deg/s, so 5000 means 0.5 deg/s.

4. After the limit is off, set the velocity back to zero.

Wait for up to ~10-30 s, until the Hard Limit indicator goes OFF (on the antenna tab).
<pre>
<axis>velocity 0 ant# (e.g "azimuthvelocity 0 ant6" for which antenna 6 stops moving)
</pre>

5. Bring antenna to track.
<pre>
track ant# (e.g "track ant6" for which antenna 6 resumes normal slew to target and starts tracking)
</pre>

If the Lo Hard Limit indicator does not go OFF after 30 s, go ahead with commands 4 and 5 (although tracking will not work) and let Dr. Gary know about it.

=== Control Room Temp row is red (temp above 85 F) ===

This information tells you what the temperature of the EOVSA control room (where all hardwares are) is. When this becomes higher than 85 F, this row becomes red, and we must let Kjell and Dr. Gary know and shut down the system to protect our hardwares. It only happened once before, but when it happens it is critical, so you must act immediately.

Note that, when the row is grey, it is only because the "Pressure" information is zero, which means that we're not getting weather information. So this is not related to the control room temperature.

=== Front End Temperature shows 0 ===

If front end temperature shows all 0 and the attenuation tab gives 'nan' for a certain antenna, you can cycle the front end power by issuing following command in raw command window: '$pcycle fem ant#', where ant# is the antenna that having the problem.

=== Ant 14 receiver does not switch between lo/hi ===

This information is relevant since ~ 2018 March, when we started to have low-frequency receiver of Ant 14 working for calibration purposes. The schedule should have HISELECT and LOSELECT during the morning and evening reference calibration scans. During HISELECT/LOSELECT, check '''CryoRX''' window, and make sure that the following setting is achieved (see '''Figure 3''' and '''4'''):

[[File:HISELECT.png|thumb|upright=2.0|'''Figure 3:''' How CryoRX window should look like after HISELECT schedule has run.]]

[[File:LOSELECT.png|thumb|upright=2.0|'''Figure 4:''' How CryoRX window should look like after LOSELECT schedule has run.]]

'''HISELECT scan:'''

RFSwitch = ON

Selected RS = High Freq RX

[RXSelect, Position] = ~510

[ZFocus, Position] = ~8

'''LOSELECT scan:'''

RFSwitch = OFF

Selected RS = Low Freq RX

[RXSelect, Position] = ~103

[ZFocus, Position] = ~70

If for some reason this state is not achieved (e.g., the receiver state does not switch from low-frequency mode to high-frequency mode during HISELECT, the RXSelect or ZFocus position stops at some values and do not approach to the desired values), issue '''rx-select hi ant 14''' or '''rx-select lo ant14''', to switch the state manually to high-frequency mode and low-frequency mode, respectively.

== Data recording (DPP) ==

=== Data recording has stopped (ls /data1/IDB |tail does not return the most recent file) ===

You need to delete dpplock.txt file. Follow these steps:

1. Enter "top" into user@dpp.solar.pvt command line (if user@dpp.solar.pvt is not there, open a new terminal/terminal tab in VNC viewer & type “ssh -X user@dpp.solar.pvt).

2. Look for "dppxmp” under “command” column. '''If it is there, do NOT delete dpplock.txt.''' If it’s not there, then quit top by hitting “q” and proceed.

3. Type “rmlock" on DPP terminal. Check if the data recording has recovered by sending "ls /data1/IDB |tail".

== Network ==

=== Cannot open VNC Viewer, or VNC Viewer's response is too slow ===

Open the “local” raw command window and Stateframe window by following these steps:

1. Type "cd /common/python/current" in helios.solar.pvt terminal of MobaXterm

2. Type "./sched_commands.py" for raw command window

3. Type "./sf_display.py" for Stateframe window (add “ &” in the end if you want to keep typing the command in the same helios window) -- note that this Stateframe window may take a while (~5 min or more) to load.

== Others ==

[[File:FLM20151005.png|thumb|upright=2.0|'''Figure 3:''' Geosynchronous satellite signals seen in flare monitor.]]

=== Strong interference in flare monitor ===

Twice per year (for 1-2 weeks centered around Mar. 5 and Oct. 5), the Sun enters in geosynchronous satellite belt. In this case, we see strong signals on flare monitor, like in '''Figure 3''' (blue line). These are radio signals from man-made satellites, which will not harm the system and cannot be avoided, so don't be alarmed.

=== The “streak” in the lowest frequency of the dynamic spectrum ===

If you are seeing this at the beginning or at the end of the day, this is the Sun! See '''Figure 4''' and '''Figure 5''' for sample images. When the baseline is foreshortened (as in near sunrise or sunset), the response is quite strong to the solar disk. As the Sun rises, the intensity goes down because the baselines start to get longer. You will actually see the reverse trend in the afternoon, although often the RFI is stronger so the color scale is more blue than in the morning.

[[File:XSP20151202160136.png|thumb|upright=2.0|'''Figure 4:''' The solar signal at the beginning of 2015-12-02 observation period. Notice that the low frequency intensity is decreasing as the Sun rises.]]

[[File:XSP20151202213507.png|thumb|upright=2.0|'''Figure 5:''' The solar signal at the end of 2015-12-02 observation period. Notice the reverse effect compared to '''Figure 4'''.]]

File:LOSELECT.png

2018-07-05T18:23:38Z

Nkuroda:

File:HISELECT.png

2018-07-05T18:22:49Z

Nkuroda:

Trouble Shooting Guide

2018-07-05T18:15:54Z

Nkuroda: /* Stateframe */

This is a trouble shooting guide for tohbans monitoring EOVSA remotely using MobaXterm and VNC Viewer.

'''<General checklist for solar observation>'''

1. Check [http://ovsa.njit.edu/EOVSA/ant_status.php Antenna Status Page] to see if any antenna is under work.

2. In Schedule window, click "Today", "File", choose "Save" (overwrite if prompted), and "Go".

'''Since Feb. 2017, the schedule setup is slightly different.''' Do the following:

2.1. Load 'solar.scd' and hit Today. Save it (overwrite if prompted).

2.2. Open 'solar_plus3c84_Feb2017.scd' in Texteditor (in ~/Dropbox/PythonCode/Current folder).

2.3. Update the sunrise and the sunset time according to the solar.scd file that you just updated.

2.4. Update the PHASECAL (and refcal, which is 1-hr PHASECAL, if necessary) times by '''subtracting''' 4 minutes from each scan (to account for the day-to-day sidereal time shift of each calibrator source). Shift the times of previous and next lines (usually ACQUIRE and SUN) accordingly.

2.5. Save the updated 'solar_plus3c84_Feb2017.scd'. Don't forget to update the DATE as well.

2.6. Load the updated 'solar_plus3c84_Feb2017.scd' and hit Go.

3. '''Antenna Tracking''' - are all antenna tracking (in white color)?

4. '''Frequency Tuning''' - LO1A Sweep Status = "Sweeping", FSeqFile = FSEQ-FILE on the schedule, ErrorMsg = "No error"

5. '''Phase Tracking''' - "ON"

6. '''Power and Attenuation''' - Are all dBm on both H- and V- Channels within the second and third numbers shown in "AGC" on the schedule window? You can also see '''SaveList''' hpol and vpol to check this.

7. '''Temps''' - no fluctuation?

8. '''CryoRX''' - this is for antenna 14 control system. If it is down (Eg: FEMA Outlets & Receiver Voltage/Current values are zero and status is OFF), then issue the command 'ctlgo' in the terminal.

9. Make sure that [http://ovsa.njit.edu/EOVSA/status.php EOVSA Observing Status Page] is being updated and that the data is being recorded. You can check if the data is recorded by typing "ls /data1/IDB |tail" in DPP terminal too.

10. STOW antennas at the end of the observation, if needed (see [http://www.ovsa.njit.edu/wiki/index.php/Trouble_Shooting_Guide#Antenna_does_not_stow_.28Ant_10.29 possible problem with Ant 10])

11. Checking the PHASECAL plots [http://ovsa.njit.edu/phasecal/ PHASECAL plot page], if you notice any unusual noisy data on ants 9, 10, 11 or 13, generally it means the antenna did not stow properly on a previous occasion, so you should issue the commands (for example with ant 13):
step 1: stop ant13

step 2: stow ant13 (wait for it to completely stow--repeat steps 1 and 2 if it seems like it is not stowing after 5 minutes or so)

step 3: track ant13

 New! 12. After the day's observation is over, take a look at the results of all PHASECAL by going to [http://ovsa.njit.edu/phasecal/ PHASECAL plot page]. Note any scan that didn't go well '''without''' the effect of WINDSCRAM (if it was under WINDSCRAM then the data points would appear in red). Record your comments on them in tohban log at [http://ovsa.njit.edu/dev/tohban/ EOVSA tohban log page]. Log other activities during your duty.

 New! 13. Do the reference gain calibration analysis by following the procedures explained in [http://www.ovsa.njit.edu/wiki/index.php/Reference_Gain_Calibration Reference Gain Calibration] '''by 1 pm on the next day'''.



== Schedule window ==

=== I accidentally closed the schedule ===

1. Click "Schedule" (on the left task bar) '''just once'''.

2. Click "Today".

=== “Error: Could not write stateframe to SQL” ===

1. hit STOP on the schedule

2. type $scan-stop in Raw Command window (to stop the data recording)

3. close the schedule (exit out of it)

4. restart the program (by clicking on the icon at the left)

5. hit GO to start the observation again

=== Schedule window is frozen ===

1. Close the old one using command 'kill -9 #', where # is the number found by typing '''ps -elf | grep schedule.py''' in sched@helios (the number is at the fourth column from the left).

2. Click "Schedule" (on the left task bar) '''just once'''.

3. Make sure you load the correct schedule and hit "Go". Double-check everything in the system, and that data files are created.

== Stateframe ==

=== Stateframe is frozen ===

1. Close the old one using command 'kill -2 #', where # is the number followed by My PID on the right corner of the StateFrame, in the terminal of sched@helios. If you have accidentally closed the StateFrame without noting the PID, you can get it by typing '''ps -elf | grep sf_display''' in sched@helios, and looking at the number indicated in the '''fourth column from the left''' on the line that ends with "python /common/python/current/sf_display.py".

2. Open a new Stateframe from the menu on the left ('sf_display')

3. Check the log box of the new stateframe

=== “ACC down?” ===

1. Open pdudigital.solar.pvt on web browser

2. Go to “Actions”

3. Go to “Loads” (on the left)

4. Click item 14 (ACC)

5. Hit “Cycle” and “Ok” when prompted

After rebooting, if Stateframe hangs up & does not respond, open a new Stateframe and give "kill ##" (## = “My PID” on the upper right corner of frozen Stateframe) command to sched@helios.solar.pvt server.

=== ACC Restart ===

After the above procedure, or any time the ACC reboots, it loads from its own disk and this appears to cause glitches in the recorded data due to some synchronization problem. For some reason not understood, the glitches go away when the ACC is loaded from the win computer. To do this,
* Start LabVIEW on the win computer if it is not already open, and click on EOVSA-LabVIEW 2015.lvproj (this may already be open).
* In the new Project Explorer window, under Targets, expand the acc item and right click on acc, then choose Connect from the drop down menu.
* After connecting, click on ACC Master.vi and select Apply.
* Now under the Startup folder in the Project Explorer, right-click ACC Master.vi and select Run.
* In the window that pops up, start it (by selecting the white arrow at the top of the window)
* After it starts successfully, right click on acc in the Project Explorer and choose Disconnect.
* Now you can close the ACC Master.vi window

Note: Rebooting the ACC kills the dppxmp program, so you need to rmlock on the DPP to allow it to run again. It also kills the sf_display, see above.

=== CryoRX tab - Status are OFF, all values are zeroes (Checklist #7 is false)===

What you should be seeing is that FEMA Outlets and Receiver Voltages/Currents are all zeroes, and Status are all OFF (except for Noise Diode, and RFSwitch when using low frequency receiver). This means that the control system for receiver has died. You would still see that antennas are tracking fine and data is recorded, and it doesn't mean that these data are "wrong" or "unusable". They have to be ON and non-zeroes whenever you want to change receiver setting or modify attenuation setting, which sometimes happens during the observation.

<del>To reboot, execute "starburstControl start" in antctl@feanta server (ssh connect from helios, if disconnected).</del>

<12/18/2016> To reboot, just type "ctlgo" in a terminal window on helios in VNC Viewer (you may have to stop the schedule). If for any reason you want to stop the control system, type "ctlstop".

=== Antenna(s) down ===

'''Don’t forget to check the [http://ovsa.njit.edu/EOVSA/ant_status.php Antenna Status page] before considering to “fix” any of the antennas!!'''

Symptoms: Not tracking, showing ‘AT STOW’ or other unwanted coordinates, both AZ and EL permits ON or only EL permit ON, or Axis Lock is ON

Please be noted that the old antennas don't have power controller so $pcycle command won't work on them.

1. Ant 9, 10, 11, 13 could be in this state early in the schedule because they just can't move to commanded position (out of declination limit). In this case, you just have to wait a while (~few hours?)

2. In cold morning, large spike in the current may cause large position error in AT STOW state.

3. Proceed if neither #1 nor #2 is the case. If only AZ permit is ON (the first column), try "reboot 1 ant2" for rebooting ant2, for example.

4. If both AZ and EL permit is ON (the second column) or only EL permit is ON, then give command "$pcycle ant2" for resetting antenna 2. This switches OFF the power to antenna for 15 seconds and switches ON. In Communication tab, Ant 2 line will go red. Wait till it becomes white. If it does not become white, then try "sync ant2". If cRIO does not respond to this, it may be in “safe mode”, in which case you can type "$pcycle crio ant2" (if on ants 1-8 or 12) and it will cycle the power on the cRIO. Note that cRIO takes at least 2 minutes to reboot and come back online. If this sequence does not work, you may try $pcycle again, but keep in mind that this command in general should only be used when needed (i.e. discouraged if it can be avoided), to save wear and tear on the components.

5. Give "tracktable [the current tracktable ***.radec] ant2" and "track ant2" to initiate the tracking. If this does not work, look for temperature to raise (if temperature is low).

=== Ant14's cRIO's "Ant" value (last column) is showing negative value ===

What you may see is that ant14's cRIO's "Ant" value (the very last column) showing negative value (not necessarily the extremely large value like you see for some antennas that are down, but some random number with negative sign). When you observe this, go to "ant14.solar.pvt" on web browser and see if it says in red "Slot1 - Maths error" on the left side. It is believed to occur when the controller is interpolating coordinates for the last-entered track table, and the calculation blows up (i.e. pcal_tab.radec file would have had a day change in it when it was not supposed to).

This should not happen beyond 12/18/2016, but if you observe it beyond this date, '''report to Dr. Gary''', and proceed to do the followings:

1. In "ant14.solar.pvt", go to "Log-in" and log-in (if you need ID/PW, ask Dr. Gary or Natsuha.)

2. Click "Parameters", then select "#10 - Status And Trips".

3. Choose "#10.00".

4. Enter "1070" to "Update values", and hit "change".

5. Go to 'parameter drop down' tab under the 'menu' tab, and choose "#38 - User Trip".

6. Enter "100" to "Update values", and hit "change".

This is supposed to reset the controller. Watch for cRIO's Ant value changes to positive values. Take note on the time you did this procedure, and report it to Dr. Gary.

=== BRIGHTSCRAM ===

Find out which antenna is experiencing this by looking at [http://ovsa.njit.edu/fits/images/ FITS image files]. BRIGHTSCRAM should appear as data-gap like features on the dynamics spectra. If more than two antennas are having BRIGHTSCRAM, then ALL antennas show BRIGHTSCRAM.

Wait for a while (~10 min) to see if it automatically goes away. After it goes away, give "tracktable [the current tracktable ***.radec] ant#" and "track ant#" to initiate the tracking.

=== Frequency Tuning's Sweep Status is “stopped” or "Queue overflow" ===

1. Try "Stop" and "Go" the schedule.

2. If #1 does not work, try "lo1a-reboot" in Raw command window

3. If #2 does not work, try the following raw commands:

<pre>
fseq-off
fseq-init
fseq-file [the current frequency receiver setting ***.fsq] (should be in the right side of the schedule window, like solarhi.fsq)
fseq-on
</pre>

=== Temperature is fluctuating too much ===

Try rebooting the temperature controller by typing "tec$bc ant2" for ant2, for example (tec => Thermo-Electric Controller).

=== nd-on is on (Attenuation) ===

Send "nd-off ant#" raw command to turn off the local noise diode.

[[File:2016-04-13_hpol.png|thumb|upright=2.0|'''Figure 1:''' Example of the oscillation from unbalanced attenuation for ant 12 (orange).]]

[[File:2016-04-15_hpol.png|thumb|upright=2.0|'''Figure 2:''' Example of the oscillation from unbalanced attenuation for ant 2 (red) and 5 (cyan).]]

=== hpol/vpol plot (Savelist) is showing unusual oscillating behavior ===

What you should see is the dBm values of the antenna fluctuating very violently like in '''Figure 1''' and '''2'''. Notice that the amplitude of the fluctuation is ~3 dB, which was one FEMATTN step (at this date). This happens when hattn/vattn settings of the antenna get changed somehow and two polarizations get very unbalanced. The result is that the automatic gain control is not being able to find a happy level for both at the same time, and went into an oscillation. To calm it down, first issue the commands:

<pre>femauto-off ant#
hattn 0 0 ant#
vattn 0 0 ant#</pre>

which turns off the automatic gain control. '''If the antenna is on the Sun, temporarily move it off the Sun using'''
<pre>
radecoff 0 10 ant#
</pre>
With the antenna off the Sun, set the hattn and vattn settings until both power levels are around 3 dB, i.e.:
<pre>
hattn 0 12 ant#
vattn 0 11 ant#
</pre>
where the choice of attenuations (12 and 11 in this example) are those that set the power level close to 3 dB. Finally, turn the gain control back on, with

<pre>
femauto-on ant#
</pre>

'''If you issued the radecoff command, be sure to remove it with'''
<pre>
radecoff 0 0 ant#
</pre>

If the fluctuation is within one FEMATTN step (2 dB as of 12/12/16, check [http://www.ovsa.njit.edu/wiki/index.php/Schedule_Commands#FEMATTN_level_.5Bantennalist.5D Schedule Command - FEMATTN level]), the cause might be just interference. In this case, leave it for a while and see if the oscillation goes away.

=== Antenna does not stow (Ant 10) ===

This mostly seems to happen on Ant 10 (as of ~July 2017). The symptom is that Ant 10 keeps staying at "TO STOW" status while all other (old) antennas are AT STOW already at the end of the observation. You might have tried the command "stow ant10", but it did not change the status. If this continues for more than a minute or so, it is likely that the antenna is running into a limit, and cannot be stowed properly with just "stow ant10" command (you also cannot trust if it does go to STOW by itself much later). To properly stow the antenna, '''issue "stop ant10" first''', then do "stow ant10". You may need to do this multiple times. If you don't properly stow the antenna this way, it may not start tracking automatically next morning, and you will miss the data from this antenna.

=== Antenna tab is blank and an attempt to switch to it causes the Stateframe to freeze ===

This occurred around early June of 2017. The cause turned out to be a change in numpy behavior. Dr. Gary updated the numpy at some point and a subtle difference caused it. This means that we should think about software upgrade as one of the causes of malfunctions of our system sometimes.

=== Antenna shows (Lo or Hi) Hard limit and does not track ===

If a hard limit of any azel antenna (1-8 or 12) is ON, follow this procedure into the Raw Command window of the schedule (with no typos).

1. Make sure that other antennas are tracking a source and that no source changes are coming up within the next minute or so.

2. Put antenna in velocity mode with

<pre>
runmode 2 ant# (e.g for antenna 6, use "runmode 2 ant6")
</pre>

Be sure to specify the antenna, otherwise ALL antennas will move.

3. Drive the antenna OFF the limit in velocity mode.
<pre>
<axis>velocity <speed> ant# (e.g "azimuthvelocity 5000 ant6" for which antenna 6 begins to move in azimuth, to drive off the Lo limit)
</pre>
If the limit is on the azimuth axis, set <axis>velocity as "azimuthvelocity". If the limit is on the elevation axis, set <axis>velocity as "elevationvelocity".
To drive off a low limit, use a positive velocity 5000. To drive off a high limit, use a negative velocity -5000. Units are 1/10000th of a deg/s, so 5000 means 0.5 deg/s.

4. After the limit is off, set the velocity back to zero.

Wait for up to ~10-30 s, until the Hard Limit indicator goes OFF (on the antenna tab).
<pre>
<axis>velocity 0 ant# (e.g "azimuthvelocity 0 ant6" for which antenna 6 stops moving)
</pre>

5. Bring antenna to track.
<pre>
track ant# (e.g "track ant6" for which antenna 6 resumes normal slew to target and starts tracking)
</pre>

If the Lo Hard Limit indicator does not go OFF after 30 s, go ahead with commands 4 and 5 (although tracking will not work) and let Dr. Gary know about it.

=== Control Room Temp row is red (temp above 85 F) ===

This information tells you what the temperature of the EOVSA control room (where all hardwares are) is. When this becomes higher than 85 F, this row becomes red, and we must let Kjell and Dr. Gary know and shut down the system to protect our hardwares. It only happened once before, but when it happens it is critical, so you must act immediately.

Note that, when the row is grey, it is only because the "Pressure" information is zero, which means that we're not getting weather information. So this is not related to the control room temperature.

=== Front End Temperature shows 0 ===

If front end temperature shows all 0 and the attenuation tab gives 'nan' for a certain antenna, you can cycle the front end power by issuing following command in raw command window: '$pcycle fem ant#', where ant# is the antenna that having the problem.

=== Ant 14 receiver does not switch between lo/hi ===

This information is relevant since ~ 2018 March, when we started to have low-frequency receiver of Ant 14 working for calibration purposes. The schedule should have HISELECT and LOSELECT during the morning and evening reference calibration scans. During HISELECT/LOSELECT, check '''CryoRX''' window, and make sure that the following setting is achieved:

'''HISELECT scan:'''

RFSwitch = ON

Selected RS = High Freq RX

[RXSelect, Position] = ~510

[ZFocus, Position] = ~8

'''LOSELECT scan:'''

RFSwitch = OFF

Selected RS = Low Freq RX

[RXSelect, Position] = ~103

[ZFocus, Position] = ~70

If for some reason this state is not achieved (e.g., the receiver state does not switch from low-frequency mode to high-frequency mode during HISELECT), issue '''rx-select hi ant 14''' or '''rx-select lo ant14''', to switch the state manually to high-frequency mode and low-frequency mode, respectively.

== Data recording (DPP) ==

=== Data recording has stopped (ls /data1/IDB |tail does not return the most recent file) ===

You need to delete dpplock.txt file. Follow these steps:

1. Enter "top" into user@dpp.solar.pvt command line (if user@dpp.solar.pvt is not there, open a new terminal/terminal tab in VNC viewer & type “ssh -X user@dpp.solar.pvt).

2. Look for "dppxmp” under “command” column. '''If it is there, do NOT delete dpplock.txt.''' If it’s not there, then quit top by hitting “q” and proceed.

3. Type “rmlock" on DPP terminal. Check if the data recording has recovered by sending "ls /data1/IDB |tail".

== Network ==

=== Cannot open VNC Viewer, or VNC Viewer's response is too slow ===

Open the “local” raw command window and Stateframe window by following these steps:

1. Type "cd /common/python/current" in helios.solar.pvt terminal of MobaXterm

2. Type "./sched_commands.py" for raw command window

3. Type "./sf_display.py" for Stateframe window (add “ &” in the end if you want to keep typing the command in the same helios window) -- note that this Stateframe window may take a while (~5 min or more) to load.

== Others ==

[[File:FLM20151005.png|thumb|upright=2.0|'''Figure 3:''' Geosynchronous satellite signals seen in flare monitor.]]

=== Strong interference in flare monitor ===

Twice per year (for 1-2 weeks centered around Mar. 5 and Oct. 5), the Sun enters in geosynchronous satellite belt. In this case, we see strong signals on flare monitor, like in '''Figure 3''' (blue line). These are radio signals from man-made satellites, which will not harm the system and cannot be avoided, so don't be alarmed.

=== The “streak” in the lowest frequency of the dynamic spectrum ===

If you are seeing this at the beginning or at the end of the day, this is the Sun! See '''Figure 4''' and '''Figure 5''' for sample images. When the baseline is foreshortened (as in near sunrise or sunset), the response is quite strong to the solar disk. As the Sun rises, the intensity goes down because the baselines start to get longer. You will actually see the reverse trend in the afternoon, although often the RFI is stronger so the color scale is more blue than in the morning.

[[File:XSP20151202160136.png|thumb|upright=2.0|'''Figure 4:''' The solar signal at the beginning of 2015-12-02 observation period. Notice that the low frequency intensity is decreasing as the Sun rises.]]

[[File:XSP20151202213507.png|thumb|upright=2.0|'''Figure 5:''' The solar signal at the end of 2015-12-02 observation period. Notice the reverse effect compared to '''Figure 4'''.]]

Owens Valley Solar Arrays

2018-06-26T21:11:26Z

Nkuroda: /* Publications */

[[File:Eovsa1.png|border|text-top|800px]]

<big>[http://ovsa.njit.edu/ EOVSA] (Expanded Owens Valley Solar Array) is a new solar-dedicated radio interferometer operated by the New Jersey Institute of Technology. This wiki serves as the site for EOVSA documentation. </big>

== EOVSA Documentation ==

* <big>General</big>
** [[Downconversion and Frequency Tuning]]
** [[Dealing with Radio Frequency Interference]]
** [[Switching between 200 MHz and 300 MHz Correlator]]

* <big>Computer-Network</big>
** [[Computing Systems]]
** [[Network]]

* <big>Control System</big>
** [[27-m Antenna Commands]]
** [[Schedule Commands]]
** [[Control Commands]]
** [[Attenuation and Level Control]]

* <big>Hardware</big>
** [[Hardware Overview]]
** [[2.1-m Antennas]]
** [[27-m Antennas]]

* <big>Software</big>
** [[Calibration Database]]
** [[Stateframe Database]]
** [[Create CASA measurement sets]]

* <big>Calibration</big>
**[[Calibration Overview]]
**[[Pointing Calibration]]
**[[Total Power Calibration]]
**[[System Gain Calibration]]
**[[Reference Gain Calibration]]
**[[Daily Gain Calibration]]
**[[Delay Calibration]]
**[[Bandpass Calibration]]
**[[Polarization Calibration]]
**[[Antenna Position]]
**[[Calibrator Survey]]

* <big>[[Starburst]]</big>

== Using EOVSA Data ==

* <big>Software Basics</big>
** [https://casaguides.nrao.edu CASA Guides]
** [http://www.atnf.csiro.au/computing/software/miriad/userguide/userhtml.html Miriad Guides]
** [http://www.lmsal.com/solarsoft/ SolarSoft IDL]
** [[Basic GitHub Tutorial]]

* <big>EOVSA Data Analysis Guide</big>
** [[Spectrogram Software]]
** [[Imaging]]
**[[Flare Imaging]]

* <big>EOVSA Modeling Guide</big>
**[[GX Simulator]]

* <big>[[EOVSA Imaging Workshop]]</big>

== System Software ==

* LabVIEW software
* Python code [https://github.com/dgary50/eovsa Github repository]

== Observing Log ==
[[2016 November]]

[[2016 December]]

[[2017 January]]

[[2017 February]]

[[2017 March]]

[[2017 April]]

[[2017 May]]

[[2017 June]]

[[2017 July]]

[[2017 August]]

[[2017 September]]

[[2017 October]]

[[2017 November]]

[[2017 December]]

[[2018 January]]

[[2018 February]]

[[2018 March]]

[[2018 April]]

== Tohbans ==

[[Trouble Shooting Guide]]

[[Tohban Records]]

== Flare List ==

See [http://ovsa.njit.edu/jay/rd_db.php this link] for a more updated version of EOVSA flare list.

{| class="wikitable" style="text-align: center; width: 1200px; height: 200px;"
|-
| '''Date''' || '''RHESSI Time''' || '''RHESSI Lightcurve''' || '''XSP Data''' || '''RHESSI Coverage''' || '''RHESSI Energy Range (keV)''' || '''EOVSA Time''' || '''EOVSA Image''' || '''GOES Class''' || '''Baseline Plot'''
|-
| Jun 3, 2017 || 21:43:25 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/06/03/hsi_20170603_212240_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170603213511.png XSP] || Yes || 6 - 12 || 21:42:00 || || B2.0 || [[TBD | Error]]
|-
| " || 19:29:19 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/06/03/hsi_20170603_181420_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170603173511.png XSP] || Yes || 12 - 25 || 19:24:00 || || C2.5 || [[:File:UDB20170603173518.png | Plot]]
|-
| Jun 2, 2017 || 19:55:54 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/06/02/hsi_20170602_184040_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170602173511.png XSP] || Yes || 6 - 12 || 19:50:00 || || B7.0 || [[:File:UDB20170602173518.png | Plot]]
|-
| " || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/06/02/hsi_20170602_170640_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170602173511.png XSP] || No || || 17:55:00 || || C8.0 || [[:File:UDB20170602173518.png | Plot]]
|-
| Jun 1, 2017 || 20:27:40 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/06/01/hsi_20170601_190640_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170601173511.png XSP] || Yes || 6 - 12 || 20:25:00 || || C1.1 || [[:File:UDB20170601173518.png | Plot]]
|-
| " || 18:04:25 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/06/01/hsi_20170601_173240_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170601173511.png XSP] || Yes || 6 - 12 || 17:55:00 || || C1.4 || [[:File:UDB20170601173518.png | Plot]]
|-
| " || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/06/01/hsi_20170601_173240_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170601173511.png XSP] || No || || 17:37:00 || || C1.0 || [[:File:UDB20170601173518.png | Plot]]
|-
| May 31, 2017 || 23:14:45 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/05/31/hsi_20170531_224100_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170531213511.png XSP] || Yes || 12 - 25 || 23:12:00 || || C2.0 || [[TBD | Error]]
|-
| " || TBD || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/05/31/hsi_20170531_210700_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170531213511.png XSP] || Yes || || 22:20:00 || || B9.8 || [[TBD | Error]]
|-
| " || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/05/31/hsi_20170531_193240_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170531205112.png XSP] || No || || 20:54:00 || || C1.3 || [[TBD | Error]]
|-
| May 28, 2017 || 19:28:10 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/05/28/hsi_20170528_191440_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170528173511.png XSP] || Yes || 25 - 50 || 19:27:00 || || C3.2 || [[:File:UDB20170528173520.png | Plot]]
|-
| May 6, 2017 || 20:07:24 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/05/06/hsi_20170506_194540_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170506180511.png XSP] || Yes || 6 - 12 || 20:06:49 || || B3.5 || [[:File:UDB20170506180518.png | Plot]]
|-
| April 21, 2017 || 17:27:25 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/21/hsi_20170421_170640_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170421141111.png XSP] || Yes || 6 - 12 || 17:26:51 || || B4.1 || [[:File:UDB20170421141120.png | Plot]]
|-
| April 17, 2017 || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/17/hsi_20170417_233740_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170417232011.png XSP] || No || || 23:45:51 || || B2.0 || [[:File:UDB20170417232020.png | Plot]]
|-
| " || 21:40:04 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/17/hsi_20170417_202920_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170417213511.png XSP] || Yes || 6 - 12 || 21:38:51 || || B7.5 || [[:File:UDB20170417213520.png | Plot]]
|-
| April 10, 2017 || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/10/hsi_20170410_171800_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170410173511.png XSP] || No || || 18:26:51 || || B4.8 || [[:File:UDB20170410173520.png | Plot]]
|-
| April 8, 2017 || 23:58:40 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/08/hsi_20170408_225240_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170408231011.png XSP] || Yes || 6 - 12 || 23:53:53 || || B2.3 || [[:File:UDB20170408231022.png | Plot]]
|-
| April 7, 2017 || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/07/hsi_20170407_183600_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170407191511.png XSP] || No || || 19:47:52 || || C4.3 || [[:File:UDB20170407191521.png | Plot]]
|-
| " || 00:23:45 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/06/hsi_20170406_234500_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170406233011.png XSP] || Yes || 12 - 25 || 00:23:52 || || C2.7 || [[:File:UDB20170406233021.png | Plot]]
|-
| April 5, 2017 || 17:38:20 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/05/hsi_20170405_162020_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170405173511.png XSP] || Yes || 6 - 12 || 17:38:51 || || B9.1 || [[:File:UDB20170405173520.png | Plot]]
|-
| " || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/05/hsi_20170405_144600_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170405142811.png XSP] || No || || 15:52:50 || || B5.9 || [[:File:UDB20170405142819.png | Plot]]
|-
| April 4, 2017 || 23:42:10 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/04/hsi_20170404_230340_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170404231511.png XSP] || Yes || 25 - 50 || 23:40:51 || [[:File:Eovsa_flare_20170404T233951.png | Image]] [http://www.ovsa.njit.edu/movies.html Movies] || C4.9 || [[:File:UDB20170404231520.png | Plot]]
|-
| " || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/04/hsi_20170404_182100_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170404191511.png XSP] || No || || 19:42:52 || || B9.4 || [[:File:UDB20170404191521.png | Plot]]
|-
| " || 00:39:35 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/03/hsi_20170403_233020_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170403231511.png XSP] || Yes || 12 - 25 || 00:37:49 || || C1.4 || [[:File:UDB20170404003935.png | Plot]]
|-
| April 3, 2017 || 23:51:49 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/03/hsi_20170403_233020_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170403231511.png XSP] || Yes || 12 - 25 || 23:44:49 || || C1.7 || [[:File:UDB20170403231518.png | Plot]]
|-
| " || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/03/hsi_20170403_184740_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170403191511.png XSP] || No || || 20:11:53 || || C5.0 || [[:File:UDB20170403191522.png | Plot]]
|-
| " || 01:00:44 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/02/hsi_20170402_235700_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170402213511.png XSP] || Yes || 25 - 50 || 01:00:52 || || M1.2 || [[:File:UDB20170402223521.png | Plot]]
|-
| April 2, 2017 || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/02/hsi_20170402_191420_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170402191511.png XSP] || No || || 20:31:49 || || M5.7 || [[:File:UDB20170402191518.png | Plot]]
|-
| " || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/02/hsi_20170402_174020_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170402173511.png XSP] || No || || 18:48:52 || || M2.1 || [[:File:UDB20170402173521.png | Plot]]
|-
| " || 16:25:30 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/02/hsi_20170402_160600_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170402143211.png XSP] || Yes || 12 - 25 || 16:24:50 || 6 sfu || C3.0 ||[[:File:UDB20170402143219.png | Plot]]
|-
| April 1, 2017 || 23:08:10 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/01/hsi_20170401_224940_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170401213511.png XSP] || Yes || 12 - 25 || 23:01:51 || 49 sfu || C5.1 || [[:File:UDB20170401213520.png | Plot]]
|-
| " || 21:48:35 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/01/hsi_20170401_211520_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170401213511.png XSP] || Yes || 50 - 100 || 21:46:51 || 286 sfu || M4.4 || [[:File:UDB20170401213520.png | Plot]]
|-
| " || 19:57:23 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/01/hsi_20170401_194120_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170401191511.png XSP] || Yes || 12 - 25 || 19:42:50 || 15 sfu || C3.7 || [[:File:UDB20170401191519.png | Plot]]
|-
| " || 15:37:25 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/01/hsi_20170401_145840_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170401143743.png XSP] || Yes || 12 - 25 || 15:55:21 || 2.5 sfu || B8.1 || [[:File:UDB20170401143750.png | Plot]]
|-
| March 31, 2017 || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/03/31/hsi_20170331_214220_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170331213511.png XSP] || No || || 22:57:49 || || C1.1 || [[:File:UDB20170331213518.png | Plot]]
|-
| March 29, 2017 || 23:27:10 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/03/29/hsi_20170329_223640_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170329213511.png XSP] || Yes || 6 - 12 || 23:40:50 || || B6.5 || [[:File:UDB20170329213519.png | Plot]]
|-
| March 25, 2017 || 23:34:44 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/03/25/hsi_20170325_225100_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170325213511.png XSP] || Yes || 6 - 12 || 23:44:50 || || B2.3 || [[:File:UDB20170327213520.png | Plot]]
|-
| February 23, 2017 || 20:52:00 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/02/23/hsi_20170223_202800_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170223191510.png XSP] || Yes || 6 - 12 || 20:52:50 || || C1.3 || [[:File:UDB20170223191519.png | Plot]]
|-
| " || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/02/23/hsi_20170223_185340_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170223191510.png XSP] || No || || 20:25:50 || || B5.8 || [[:File:UDB20170223191519.png | Plot]]
|-
| February 21, 2017 || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/02/21/hsi_20170221_225520_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170221220653.png XSP] || No || || 22:51:10 || || B3.0 || [[:File:UDB20170221220739.png | Plot]]
|-
| January 25, 2017 || 21:27:14 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/01/25/hsi_20170125_204400_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170125200011.png XSP] || Yes || 12 - 25 || 21:26:57 || || B8.5 || [[:File:UDB20170125200025.png | Plot]]
|}

== Publications ==

This is the list of links to the publications (including posters) related to EOVSA.

[https://drive.google.com/open?id=14pg4PvsPdVMki8LpZUoNRQVxkysEl1Rt Kuroda et al. (2018): “Three-dimensional Forward-fit Modeling of the Hard X-ray and the Microwave Emissions of the 2015 June 22 M6.5 flare”, ApJ, 852, 32]

Owens Valley Solar Arrays

2018-06-26T20:58:22Z

Nkuroda:

[[File:Eovsa1.png|border|text-top|800px]]

<big>[http://ovsa.njit.edu/ EOVSA] (Expanded Owens Valley Solar Array) is a new solar-dedicated radio interferometer operated by the New Jersey Institute of Technology. This wiki serves as the site for EOVSA documentation. </big>

== EOVSA Documentation ==

* <big>General</big>
** [[Downconversion and Frequency Tuning]]
** [[Dealing with Radio Frequency Interference]]
** [[Switching between 200 MHz and 300 MHz Correlator]]

* <big>Computer-Network</big>
** [[Computing Systems]]
** [[Network]]

* <big>Control System</big>
** [[27-m Antenna Commands]]
** [[Schedule Commands]]
** [[Control Commands]]
** [[Attenuation and Level Control]]

* <big>Hardware</big>
** [[Hardware Overview]]
** [[2.1-m Antennas]]
** [[27-m Antennas]]

* <big>Software</big>
** [[Calibration Database]]
** [[Stateframe Database]]
** [[Create CASA measurement sets]]

* <big>Calibration</big>
**[[Calibration Overview]]
**[[Pointing Calibration]]
**[[Total Power Calibration]]
**[[System Gain Calibration]]
**[[Reference Gain Calibration]]
**[[Daily Gain Calibration]]
**[[Delay Calibration]]
**[[Bandpass Calibration]]
**[[Polarization Calibration]]
**[[Antenna Position]]
**[[Calibrator Survey]]

* <big>[[Starburst]]</big>

== Using EOVSA Data ==

* <big>Software Basics</big>
** [https://casaguides.nrao.edu CASA Guides]
** [http://www.atnf.csiro.au/computing/software/miriad/userguide/userhtml.html Miriad Guides]
** [http://www.lmsal.com/solarsoft/ SolarSoft IDL]
** [[Basic GitHub Tutorial]]

* <big>EOVSA Data Analysis Guide</big>
** [[Spectrogram Software]]
** [[Imaging]]
**[[Flare Imaging]]

* <big>EOVSA Modeling Guide</big>
**[[GX Simulator]]

* <big>[[EOVSA Imaging Workshop]]</big>

== System Software ==

* LabVIEW software
* Python code [https://github.com/dgary50/eovsa Github repository]

== Observing Log ==
[[2016 November]]

[[2016 December]]

[[2017 January]]

[[2017 February]]

[[2017 March]]

[[2017 April]]

[[2017 May]]

[[2017 June]]

[[2017 July]]

[[2017 August]]

[[2017 September]]

[[2017 October]]

[[2017 November]]

[[2017 December]]

[[2018 January]]

[[2018 February]]

[[2018 March]]

[[2018 April]]

== Tohbans ==

[[Trouble Shooting Guide]]

[[Tohban Records]]

== Flare List ==

See [http://ovsa.njit.edu/jay/rd_db.php this link] for a more updated version of EOVSA flare list.

{| class="wikitable" style="text-align: center; width: 1200px; height: 200px;"
|-
| '''Date''' || '''RHESSI Time''' || '''RHESSI Lightcurve''' || '''XSP Data''' || '''RHESSI Coverage''' || '''RHESSI Energy Range (keV)''' || '''EOVSA Time''' || '''EOVSA Image''' || '''GOES Class''' || '''Baseline Plot'''
|-
| Jun 3, 2017 || 21:43:25 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/06/03/hsi_20170603_212240_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170603213511.png XSP] || Yes || 6 - 12 || 21:42:00 || || B2.0 || [[TBD | Error]]
|-
| " || 19:29:19 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/06/03/hsi_20170603_181420_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170603173511.png XSP] || Yes || 12 - 25 || 19:24:00 || || C2.5 || [[:File:UDB20170603173518.png | Plot]]
|-
| Jun 2, 2017 || 19:55:54 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/06/02/hsi_20170602_184040_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170602173511.png XSP] || Yes || 6 - 12 || 19:50:00 || || B7.0 || [[:File:UDB20170602173518.png | Plot]]
|-
| " || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/06/02/hsi_20170602_170640_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170602173511.png XSP] || No || || 17:55:00 || || C8.0 || [[:File:UDB20170602173518.png | Plot]]
|-
| Jun 1, 2017 || 20:27:40 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/06/01/hsi_20170601_190640_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170601173511.png XSP] || Yes || 6 - 12 || 20:25:00 || || C1.1 || [[:File:UDB20170601173518.png | Plot]]
|-
| " || 18:04:25 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/06/01/hsi_20170601_173240_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170601173511.png XSP] || Yes || 6 - 12 || 17:55:00 || || C1.4 || [[:File:UDB20170601173518.png | Plot]]
|-
| " || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/06/01/hsi_20170601_173240_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170601173511.png XSP] || No || || 17:37:00 || || C1.0 || [[:File:UDB20170601173518.png | Plot]]
|-
| May 31, 2017 || 23:14:45 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/05/31/hsi_20170531_224100_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170531213511.png XSP] || Yes || 12 - 25 || 23:12:00 || || C2.0 || [[TBD | Error]]
|-
| " || TBD || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/05/31/hsi_20170531_210700_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170531213511.png XSP] || Yes || || 22:20:00 || || B9.8 || [[TBD | Error]]
|-
| " || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/05/31/hsi_20170531_193240_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170531205112.png XSP] || No || || 20:54:00 || || C1.3 || [[TBD | Error]]
|-
| May 28, 2017 || 19:28:10 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/05/28/hsi_20170528_191440_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170528173511.png XSP] || Yes || 25 - 50 || 19:27:00 || || C3.2 || [[:File:UDB20170528173520.png | Plot]]
|-
| May 6, 2017 || 20:07:24 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/05/06/hsi_20170506_194540_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170506180511.png XSP] || Yes || 6 - 12 || 20:06:49 || || B3.5 || [[:File:UDB20170506180518.png | Plot]]
|-
| April 21, 2017 || 17:27:25 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/21/hsi_20170421_170640_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170421141111.png XSP] || Yes || 6 - 12 || 17:26:51 || || B4.1 || [[:File:UDB20170421141120.png | Plot]]
|-
| April 17, 2017 || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/17/hsi_20170417_233740_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170417232011.png XSP] || No || || 23:45:51 || || B2.0 || [[:File:UDB20170417232020.png | Plot]]
|-
| " || 21:40:04 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/17/hsi_20170417_202920_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170417213511.png XSP] || Yes || 6 - 12 || 21:38:51 || || B7.5 || [[:File:UDB20170417213520.png | Plot]]
|-
| April 10, 2017 || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/10/hsi_20170410_171800_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170410173511.png XSP] || No || || 18:26:51 || || B4.8 || [[:File:UDB20170410173520.png | Plot]]
|-
| April 8, 2017 || 23:58:40 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/08/hsi_20170408_225240_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170408231011.png XSP] || Yes || 6 - 12 || 23:53:53 || || B2.3 || [[:File:UDB20170408231022.png | Plot]]
|-
| April 7, 2017 || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/07/hsi_20170407_183600_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170407191511.png XSP] || No || || 19:47:52 || || C4.3 || [[:File:UDB20170407191521.png | Plot]]
|-
| " || 00:23:45 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/06/hsi_20170406_234500_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170406233011.png XSP] || Yes || 12 - 25 || 00:23:52 || || C2.7 || [[:File:UDB20170406233021.png | Plot]]
|-
| April 5, 2017 || 17:38:20 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/05/hsi_20170405_162020_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170405173511.png XSP] || Yes || 6 - 12 || 17:38:51 || || B9.1 || [[:File:UDB20170405173520.png | Plot]]
|-
| " || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/05/hsi_20170405_144600_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170405142811.png XSP] || No || || 15:52:50 || || B5.9 || [[:File:UDB20170405142819.png | Plot]]
|-
| April 4, 2017 || 23:42:10 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/04/hsi_20170404_230340_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170404231511.png XSP] || Yes || 25 - 50 || 23:40:51 || [[:File:Eovsa_flare_20170404T233951.png | Image]] [http://www.ovsa.njit.edu/movies.html Movies] || C4.9 || [[:File:UDB20170404231520.png | Plot]]
|-
| " || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/04/hsi_20170404_182100_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170404191511.png XSP] || No || || 19:42:52 || || B9.4 || [[:File:UDB20170404191521.png | Plot]]
|-
| " || 00:39:35 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/03/hsi_20170403_233020_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170403231511.png XSP] || Yes || 12 - 25 || 00:37:49 || || C1.4 || [[:File:UDB20170404003935.png | Plot]]
|-
| April 3, 2017 || 23:51:49 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/03/hsi_20170403_233020_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170403231511.png XSP] || Yes || 12 - 25 || 23:44:49 || || C1.7 || [[:File:UDB20170403231518.png | Plot]]
|-
| " || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/03/hsi_20170403_184740_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170403191511.png XSP] || No || || 20:11:53 || || C5.0 || [[:File:UDB20170403191522.png | Plot]]
|-
| " || 01:00:44 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/02/hsi_20170402_235700_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170402213511.png XSP] || Yes || 25 - 50 || 01:00:52 || || M1.2 || [[:File:UDB20170402223521.png | Plot]]
|-
| April 2, 2017 || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/02/hsi_20170402_191420_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170402191511.png XSP] || No || || 20:31:49 || || M5.7 || [[:File:UDB20170402191518.png | Plot]]
|-
| " || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/02/hsi_20170402_174020_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170402173511.png XSP] || No || || 18:48:52 || || M2.1 || [[:File:UDB20170402173521.png | Plot]]
|-
| " || 16:25:30 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/02/hsi_20170402_160600_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170402143211.png XSP] || Yes || 12 - 25 || 16:24:50 || 6 sfu || C3.0 ||[[:File:UDB20170402143219.png | Plot]]
|-
| April 1, 2017 || 23:08:10 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/01/hsi_20170401_224940_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170401213511.png XSP] || Yes || 12 - 25 || 23:01:51 || 49 sfu || C5.1 || [[:File:UDB20170401213520.png | Plot]]
|-
| " || 21:48:35 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/01/hsi_20170401_211520_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170401213511.png XSP] || Yes || 50 - 100 || 21:46:51 || 286 sfu || M4.4 || [[:File:UDB20170401213520.png | Plot]]
|-
| " || 19:57:23 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/01/hsi_20170401_194120_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170401191511.png XSP] || Yes || 12 - 25 || 19:42:50 || 15 sfu || C3.7 || [[:File:UDB20170401191519.png | Plot]]
|-
| " || 15:37:25 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/01/hsi_20170401_145840_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170401143743.png XSP] || Yes || 12 - 25 || 15:55:21 || 2.5 sfu || B8.1 || [[:File:UDB20170401143750.png | Plot]]
|-
| March 31, 2017 || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/03/31/hsi_20170331_214220_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170331213511.png XSP] || No || || 22:57:49 || || C1.1 || [[:File:UDB20170331213518.png | Plot]]
|-
| March 29, 2017 || 23:27:10 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/03/29/hsi_20170329_223640_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170329213511.png XSP] || Yes || 6 - 12 || 23:40:50 || || B6.5 || [[:File:UDB20170329213519.png | Plot]]
|-
| March 25, 2017 || 23:34:44 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/03/25/hsi_20170325_225100_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170325213511.png XSP] || Yes || 6 - 12 || 23:44:50 || || B2.3 || [[:File:UDB20170327213520.png | Plot]]
|-
| February 23, 2017 || 20:52:00 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/02/23/hsi_20170223_202800_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170223191510.png XSP] || Yes || 6 - 12 || 20:52:50 || || C1.3 || [[:File:UDB20170223191519.png | Plot]]
|-
| " || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/02/23/hsi_20170223_185340_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170223191510.png XSP] || No || || 20:25:50 || || B5.8 || [[:File:UDB20170223191519.png | Plot]]
|-
| February 21, 2017 || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/02/21/hsi_20170221_225520_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170221220653.png XSP] || No || || 22:51:10 || || B3.0 || [[:File:UDB20170221220739.png | Plot]]
|-
| January 25, 2017 || 21:27:14 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/01/25/hsi_20170125_204400_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170125200011.png XSP] || Yes || 12 - 25 || 21:26:57 || || B8.5 || [[:File:UDB20170125200025.png | Plot]]
|}

== Publications ==

Trouble Shooting Guide

2018-04-24T20:33:09Z

Nkuroda:

This is a trouble shooting guide for tohbans monitoring EOVSA remotely using MobaXterm and VNC Viewer.

'''<General checklist for solar observation>'''

1. Check [http://ovsa.njit.edu/EOVSA/ant_status.php Antenna Status Page] to see if any antenna is under work.

2. In Schedule window, click "Today", "File", choose "Save" (overwrite if prompted), and "Go".

'''Since Feb. 2017, the schedule setup is slightly different.''' Do the following:

2.1. Load 'solar.scd' and hit Today. Save it (overwrite if prompted).

2.2. Open 'solar_plus3c84_Feb2017.scd' in Texteditor (in ~/Dropbox/PythonCode/Current folder).

2.3. Update the sunrise and the sunset time according to the solar.scd file that you just updated.

2.4. Update the PHASECAL (and refcal, which is 1-hr PHASECAL, if necessary) times by '''subtracting''' 4 minutes from each scan (to account for the day-to-day sidereal time shift of each calibrator source). Shift the times of previous and next lines (usually ACQUIRE and SUN) accordingly.

2.5. Save the updated 'solar_plus3c84_Feb2017.scd'. Don't forget to update the DATE as well.

2.6. Load the updated 'solar_plus3c84_Feb2017.scd' and hit Go.

3. '''Antenna Tracking''' - are all antenna tracking (in white color)?

4. '''Frequency Tuning''' - LO1A Sweep Status = "Sweeping", FSeqFile = FSEQ-FILE on the schedule, ErrorMsg = "No error"

5. '''Phase Tracking''' - "ON"

6. '''Power and Attenuation''' - Are all dBm on both H- and V- Channels within the second and third numbers shown in "AGC" on the schedule window? You can also see '''SaveList''' hpol and vpol to check this.

7. '''Temps''' - no fluctuation?

8. '''CryoRX''' - this is for antenna 14 control system. If it is down (Eg: FEMA Outlets & Receiver Voltage/Current values are zero and status is OFF), then issue the command 'ctlgo' in the terminal.

9. Make sure that [http://ovsa.njit.edu/EOVSA/status.php EOVSA Observing Status Page] is being updated and that the data is being recorded. You can check if the data is recorded by typing "ls /data1/IDB |tail" in DPP terminal too.

10. STOW antennas at the end of the observation, if needed (see [http://www.ovsa.njit.edu/wiki/index.php/Trouble_Shooting_Guide#Antenna_does_not_stow_.28Ant_10.29 possible problem with Ant 10])

11. Checking the PHASECAL plots [http://ovsa.njit.edu/phasecal/ PHASECAL plot page], if you notice any unusual noisy data on ants 9, 10, 11 or 13, generally it means the antenna did not stow properly on a previous occasion, so you should issue the commands (for example with ant 13):
step 1: stop ant13

step 2: stow ant13 (wait for it to completely stow--repeat steps 1 and 2 if it seems like it is not stowing after 5 minutes or so)

step 3: track ant13

 New! 12. After the day's observation is over, take a look at the results of all PHASECAL by going to [http://ovsa.njit.edu/phasecal/ PHASECAL plot page]. Note any scan that didn't go well '''without''' the effect of WINDSCRAM (if it was under WINDSCRAM then the data points would appear in red). Record your comments on them in tohban log at [http://ovsa.njit.edu/dev/tohban/ EOVSA tohban log page]. Log other activities during your duty.

 New! 13. Do the reference gain calibration analysis by following the procedures explained in [http://www.ovsa.njit.edu/wiki/index.php/Reference_Gain_Calibration Reference Gain Calibration] '''by 1 pm on the next day'''.



== Schedule window ==

=== I accidentally closed the schedule ===

1. Click "Schedule" (on the left task bar) '''just once'''.

2. Click "Today".

=== “Error: Could not write stateframe to SQL” ===

1. hit STOP on the schedule

2. type $scan-stop in Raw Command window (to stop the data recording)

3. close the schedule (exit out of it)

4. restart the program (by clicking on the icon at the left)

5. hit GO to start the observation again

=== Schedule window is frozen ===

1. Close the old one using command 'kill -9 #', where # is the number found by typing '''ps -elf | grep schedule.py''' in sched@helios (the number is at the fourth column from the left).

2. Click "Schedule" (on the left task bar) '''just once'''.

3. Make sure you load the correct schedule and hit "Go". Double-check everything in the system, and that data files are created.

== Stateframe ==

=== Stateframe is frozen ===

1. Close the old one using command 'kill -2 #', where # is the number followed by My PID on the right corner of the StateFrame, in the terminal of sched@helios. If you have accidentally closed the StateFrame without noting the PID, you can get it by typing '''ps -elf | grep sf_display''' in sched@helios, and looking at the number indicated in the '''fourth column from the left''' on the line that ends with "python /common/python/current/sf_display.py".

2. Open a new Stateframe from the menu on the left ('sf_display')

3. Check the log box of the new stateframe

=== “ACC down?” ===

1. Open pdudigital.solar.pvt on web browser

2. Go to “Actions”

3. Go to “Loads” (on the left)

4. Click item 14 (ACC)

5. Hit “Cycle” and “Ok” when prompted

After rebooting, if Stateframe hangs up & does not respond, open a new Stateframe and give "kill ##" (## = “My PID” on the upper right corner of frozen Stateframe) command to sched@helios.solar.pvt server.

=== ACC Restart ===

After the above procedure, or any time the ACC reboots, it loads from its own disk and this appears to cause glitches in the recorded data due to some synchronization problem. For some reason not understood, the glitches go away when the ACC is loaded from the win computer. To do this,
* Start LabVIEW on the win computer if it is not already open, and click on EOVSA-LabVIEW 2015.lvproj (this may already be open).
* In the new Project Explorer window, under Targets, expand the acc item and right click on acc, then choose Connect from the drop down menu.
* After connecting, click on ACC Master.vi and select Apply.
* Now under the Startup folder in the Project Explorer, right-click ACC Master.vi and select Run.
* In the window that pops up, start it (by selecting the white arrow at the top of the window)
* After it starts successfully, right click on acc in the Project Explorer and choose Disconnect.
* Now you can close the ACC Master.vi window

Note: Rebooting the ACC kills the dppxmp program, so you need to rmlock on the DPP to allow it to run again. It also kills the sf_display, see above.

=== CryoRX tab - Status are OFF, all values are zeroes (Checklist #7 is false)===

What you should be seeing is that FEMA Outlets and Receiver Voltages/Currents are all zeroes, and Status are all OFF (except for Noise Diode, and RFSwitch when using low frequency receiver). This means that the control system for receiver has died. You would still see that antennas are tracking fine and data is recorded, and it doesn't mean that these data are "wrong" or "unusable". They have to be ON and non-zeroes whenever you want to change receiver setting or modify attenuation setting, which sometimes happens during the observation.

<del>To reboot, execute "starburstControl start" in antctl@feanta server (ssh connect from helios, if disconnected).</del>

<12/18/2016> To reboot, just type "ctlgo" in a terminal window on helios in VNC Viewer (you may have to stop the schedule). If for any reason you want to stop the control system, type "ctlstop".

=== Antenna(s) down ===

'''Don’t forget to check the [http://ovsa.njit.edu/EOVSA/ant_status.php Antenna Status page] before considering to “fix” any of the antennas!!'''

Symptoms: Not tracking, showing ‘AT STOW’ or other unwanted coordinates, both AZ and EL permits ON or only EL permit ON, or Axis Lock is ON

Please be noted that the old antennas don't have power controller so $pcycle command won't work on them.

1. Ant 9, 10, 11, 13 could be in this state early in the schedule because they just can't move to commanded position (out of declination limit). In this case, you just have to wait a while (~few hours?)

2. In cold morning, large spike in the current may cause large position error in AT STOW state.

3. Proceed if neither #1 nor #2 is the case. If only AZ permit is ON (the first column), try "reboot 1 ant2" for rebooting ant2, for example.

4. If both AZ and EL permit is ON (the second column) or only EL permit is ON, then give command "$pcycle ant2" for resetting antenna 2. This switches OFF the power to antenna for 15 seconds and switches ON. In Communication tab, Ant 2 line will go red. Wait till it becomes white. If it does not become white, then try "sync ant2". If cRIO does not respond to this, it may be in “safe mode”, in which case you can type "$pcycle crio ant2" (if on ants 1-8 or 12) and it will cycle the power on the cRIO. Note that cRIO takes at least 2 minutes to reboot and come back online. If this sequence does not work, you may try $pcycle again, but keep in mind that this command in general should only be used when needed (i.e. discouraged if it can be avoided), to save wear and tear on the components.

5. Give "tracktable [the current tracktable ***.radec] ant2" and "track ant2" to initiate the tracking. If this does not work, look for temperature to raise (if temperature is low).

=== Ant14's cRIO's "Ant" value (last column) is showing negative value ===

What you may see is that ant14's cRIO's "Ant" value (the very last column) showing negative value (not necessarily the extremely large value like you see for some antennas that are down, but some random number with negative sign). When you observe this, go to "ant14.solar.pvt" on web browser and see if it says in red "Slot1 - Maths error" on the left side. It is believed to occur when the controller is interpolating coordinates for the last-entered track table, and the calculation blows up (i.e. pcal_tab.radec file would have had a day change in it when it was not supposed to).

This should not happen beyond 12/18/2016, but if you observe it beyond this date, '''report to Dr. Gary''', and proceed to do the followings:

1. In "ant14.solar.pvt", go to "Log-in" and log-in (if you need ID/PW, ask Dr. Gary or Natsuha.)

2. Click "Parameters", then select "#10 - Status And Trips".

3. Choose "#10.00".

4. Enter "1070" to "Update values", and hit "change".

5. Go to 'parameter drop down' tab under the 'menu' tab, and choose "#38 - User Trip".

6. Enter "100" to "Update values", and hit "change".

This is supposed to reset the controller. Watch for cRIO's Ant value changes to positive values. Take note on the time you did this procedure, and report it to Dr. Gary.

=== BRIGHTSCRAM ===

Find out which antenna is experiencing this by looking at [http://ovsa.njit.edu/fits/images/ FITS image files]. BRIGHTSCRAM should appear as data-gap like features on the dynamics spectra. If more than two antennas are having BRIGHTSCRAM, then ALL antennas show BRIGHTSCRAM.

Wait for a while (~10 min) to see if it automatically goes away. After it goes away, give "tracktable [the current tracktable ***.radec] ant#" and "track ant#" to initiate the tracking.

=== Frequency Tuning's Sweep Status is “stopped” or "Queue overflow" ===

1. Try "Stop" and "Go" the schedule.

2. If #1 does not work, try "lo1a-reboot" in Raw command window

3. If #2 does not work, try the following raw commands:

<pre>
fseq-off
fseq-init
fseq-file [the current frequency receiver setting ***.fsq] (should be in the right side of the schedule window, like solarhi.fsq)
fseq-on
</pre>

=== Temperature is fluctuating too much ===

Try rebooting the temperature controller by typing "tec$bc ant2" for ant2, for example (tec => Thermo-Electric Controller).

=== nd-on is on (Attenuation) ===

Send "nd-off ant#" raw command to turn off the local noise diode.

[[File:2016-04-13_hpol.png|thumb|upright=2.0|'''Figure 1:''' Example of the oscillation from unbalanced attenuation for ant 12 (orange).]]

[[File:2016-04-15_hpol.png|thumb|upright=2.0|'''Figure 2:''' Example of the oscillation from unbalanced attenuation for ant 2 (red) and 5 (cyan).]]

=== hpol/vpol plot (Savelist) is showing unusual oscillating behavior ===

What you should see is the dBm values of the antenna fluctuating very violently like in '''Figure 1''' and '''2'''. Notice that the amplitude of the fluctuation is ~3 dB, which was one FEMATTN step (at this date). This happens when hattn/vattn settings of the antenna get changed somehow and two polarizations get very unbalanced. The result is that the automatic gain control is not being able to find a happy level for both at the same time, and went into an oscillation. To calm it down, first issue the commands:

<pre>femauto-off ant#
hattn 0 0 ant#
vattn 0 0 ant#</pre>

which turns off the automatic gain control. '''If the antenna is on the Sun, temporarily move it off the Sun using'''
<pre>
radecoff 0 10 ant#
</pre>
With the antenna off the Sun, set the hattn and vattn settings until both power levels are around 3 dB, i.e.:
<pre>
hattn 0 12 ant#
vattn 0 11 ant#
</pre>
where the choice of attenuations (12 and 11 in this example) are those that set the power level close to 3 dB. Finally, turn the gain control back on, with

<pre>
femauto-on ant#
</pre>

'''If you issued the radecoff command, be sure to remove it with'''
<pre>
radecoff 0 0 ant#
</pre>

If the fluctuation is within one FEMATTN step (2 dB as of 12/12/16, check [http://www.ovsa.njit.edu/wiki/index.php/Schedule_Commands#FEMATTN_level_.5Bantennalist.5D Schedule Command - FEMATTN level]), the cause might be just interference. In this case, leave it for a while and see if the oscillation goes away.

=== Antenna does not stow (Ant 10) ===

This mostly seems to happen on Ant 10 (as of ~July 2017). The symptom is that Ant 10 keeps staying at "TO STOW" status while all other (old) antennas are AT STOW already at the end of the observation. You might have tried the command "stow ant10", but it did not change the status. If this continues for more than a minute or so, it is likely that the antenna is running into a limit, and cannot be stowed properly with just "stow ant10" command (you also cannot trust if it does go to STOW by itself much later). To properly stow the antenna, '''issue "stop ant10" first''', then do "stow ant10". You may need to do this multiple times. If you don't properly stow the antenna this way, it may not start tracking automatically next morning, and you will miss the data from this antenna.

=== Antenna tab is blank and an attempt to switch to it causes the Stateframe to freeze ===

This occurred around early June of 2017. The cause turned out to be a change in numpy behavior. Dr. Gary updated the numpy at some point and a subtle difference caused it. This means that we should think about software upgrade as one of the causes of malfunctions of our system sometimes.

=== Antenna shows (Lo or Hi) Hard limit and does not track ===

If a hard limit of any azel antenna (1-8 or 12) is ON, follow this procedure into the Raw Command window of the schedule (with no typos).

1. Make sure that other antennas are tracking a source and that no source changes are coming up within the next minute or so.

2. Put antenna in velocity mode with

<pre>
runmode 2 ant# (e.g for antenna 6, use "runmode 2 ant6")
</pre>

Be sure to specify the antenna, otherwise ALL antennas will move.

3. Drive the antenna OFF the limit in velocity mode.
<pre>
<axis>velocity <speed> ant# (e.g "azimuthvelocity 5000 ant6" for which antenna 6 begins to move in azimuth, to drive off the Lo limit)
</pre>
If the limit is on the azimuth axis, set <axis>velocity as "azimuthvelocity". If the limit is on the elevation axis, set <axis>velocity as "elevationvelocity".
To drive off a low limit, use a positive velocity 5000. To drive off a high limit, use a negative velocity -5000. Units are 1/10000th of a deg/s, so 5000 means 0.5 deg/s.

4. After the limit is off, set the velocity back to zero.

Wait for up to ~10-30 s, until the Hard Limit indicator goes OFF (on the antenna tab).
<pre>
<axis>velocity 0 ant# (e.g "azimuthvelocity 0 ant6" for which antenna 6 stops moving)
</pre>

5. Bring antenna to track.
<pre>
track ant# (e.g "track ant6" for which antenna 6 resumes normal slew to target and starts tracking)
</pre>

If the Lo Hard Limit indicator does not go OFF after 30 s, go ahead with commands 4 and 5 (although tracking will not work) and let Dr. Gary know about it.

=== Control Room Temp row is red (temp above 85 F) ===

This information tells you what the temperature of the EOVSA control room (where all hardwares are) is. When this becomes higher than 85 F, this row becomes red, and we must let Kjell and Dr. Gary know and shut down the system to protect our hardwares. It only happened once before, but when it happens it is critical, so you must act immediately.

Note that, when the row is grey, it is only because the "Pressure" information is zero, which means that we're not getting weather information. So this is not related to the control room temperature.

=== Front End Temperature shows 0 ===

If front end temperature shows all 0 and the attenuation tab gives 'nan' for a certain antenna, you can cycle the front end power by issuing following command in raw command window: '$pcycle fem ant#', where ant# is the antenna that having the problem.

== Data recording (DPP) ==

=== Data recording has stopped (ls /data1/IDB |tail does not return the most recent file) ===

You need to delete dpplock.txt file. Follow these steps:

1. Enter "top" into user@dpp.solar.pvt command line (if user@dpp.solar.pvt is not there, open a new terminal/terminal tab in VNC viewer & type “ssh -X user@dpp.solar.pvt).

2. Look for "dppxmp” under “command” column. '''If it is there, do NOT delete dpplock.txt.''' If it’s not there, then quit top by hitting “q” and proceed.

3. Type “rmlock" on DPP terminal. Check if the data recording has recovered by sending "ls /data1/IDB |tail".

== Network ==

=== Cannot open VNC Viewer, or VNC Viewer's response is too slow ===

Open the “local” raw command window and Stateframe window by following these steps:

1. Type "cd /common/python/current" in helios.solar.pvt terminal of MobaXterm

2. Type "./sched_commands.py" for raw command window

3. Type "./sf_display.py" for Stateframe window (add “ &” in the end if you want to keep typing the command in the same helios window) -- note that this Stateframe window may take a while (~5 min or more) to load.

== Others ==

[[File:FLM20151005.png|thumb|upright=2.0|'''Figure 3:''' Geosynchronous satellite signals seen in flare monitor.]]

=== Strong interference in flare monitor ===

Twice per year (for 1-2 weeks centered around Mar. 5 and Oct. 5), the Sun enters in geosynchronous satellite belt. In this case, we see strong signals on flare monitor, like in '''Figure 3''' (blue line). These are radio signals from man-made satellites, which will not harm the system and cannot be avoided, so don't be alarmed.

=== The “streak” in the lowest frequency of the dynamic spectrum ===

If you are seeing this at the beginning or at the end of the day, this is the Sun! See '''Figure 4''' and '''Figure 5''' for sample images. When the baseline is foreshortened (as in near sunrise or sunset), the response is quite strong to the solar disk. As the Sun rises, the intensity goes down because the baselines start to get longer. You will actually see the reverse trend in the afternoon, although often the RFI is stronger so the color scale is more blue than in the morning.

[[File:XSP20151202160136.png|thumb|upright=2.0|'''Figure 4:''' The solar signal at the beginning of 2015-12-02 observation period. Notice that the low frequency intensity is decreasing as the Sun rises.]]

[[File:XSP20151202213507.png|thumb|upright=2.0|'''Figure 5:''' The solar signal at the end of 2015-12-02 observation period. Notice the reverse effect compared to '''Figure 4'''.]]

2018 April

2018-04-17T16:45:08Z

Nkuroda: /* Apr 17 */

[http://www.ovsa.njit.edu/wiki/index.php/Expanded_Owens_Valley_Solar_Array#Observing_Log Back to Observing Log]

== Apr 02 ==
'''14:01 UT''' This morning after the low-frequency receiver observation, I updated the Ant14-lo delay by 4 ns, so the solar observations will differ from the phase calibration by that amount, for the low-frequency receiver calibration.

'''19:20 UT''' Oops. I inadvertently updated the high-frequency receiver delay on Ant 14 this morning. This does not affect solar observations, but did mess up the phasecals for today. I have now updated both high- and low-receiver delays. My high-receiver changes affect more than just Ant 14, since many of the delays were off by 0.1 ns from their optimal value, so it will be simplest just to use the end-of-the-day refcal for calibration of today's data.

== Apr 06 ==
'''19:00 UT''' I received an email from Mark at OVRO saying that the Ant 14 receiver had warmed up, which turns out to be due to a vacuum leak in one of the windows (the Hi-freq Receiver, I guess, since the other window is not under vacuum). He will see if the window can be repaired on the telescope, or must be brought down to fix. Meanwhile, we will have no calibrations for the foreseeable future.

== Apr 09 ==
'''13:11 UT''' I discovered this morning that the UDB processing pipeline was not running since Apr. 06. I removed the lock file, and although it shows signs of working, no new files are created yet.

== Apr 10 ==
'''15:00 UT''' The 27-m antenna is back, although still cooling down. Both HPol and VPol on the low-frequency receiver appear to be dead, though.

== Apr 15 ==
'''21:16 UT''' The correlator was showing signs of bad sync again for the last couple of days. I rebooted the correlator at about 20:10 UT, and then measuring delays on 3C84. The network was glitching, though, so it took a little longer than I wanted. I just now got the delays reset, and back on the Sun. There was about 30 minutes of bad solar data until just now.

== Apr 16 ==
'''21:00 UT''' The glitches from yesterday re-appeared, so Natsuha stopped the observation and rebooted the correlator at ~21:00 UT. No good scans could be obtained, so she gave up and resumed the solar observation at 23:28 UT. Another attempt will be made at 3 UT next day when 3c273 will rise.

== Apr 17 ==
'''14:50 UT''' The 3c273 scans for the delay reset last night were unsuccessful due to continuous high wind. This morning Natsuha tried again with 2136+006. The wind was still high but a couple of scans went through without windscram. However, the delay values were very difficult to find, perhaps still due to mild wind speed (9~13 mph). A set of values (mostly zeros) from 131248 scan were sent in at ~14:30 UT.

Another thing - the gliches for which this correlator reboot was done in the first place reappeared this morning. This indicates that the correlator reboot no longer can solve this problem. The delay reset will still be attempted at the earliest possible moment since the glitches appear on only selected bands and other bands' data are fine.

2018 April

2018-04-17T16:42:37Z

Nkuroda:

[http://www.ovsa.njit.edu/wiki/index.php/Expanded_Owens_Valley_Solar_Array#Observing_Log Back to Observing Log]

== Apr 02 ==
'''14:01 UT''' This morning after the low-frequency receiver observation, I updated the Ant14-lo delay by 4 ns, so the solar observations will differ from the phase calibration by that amount, for the low-frequency receiver calibration.

'''19:20 UT''' Oops. I inadvertently updated the high-frequency receiver delay on Ant 14 this morning. This does not affect solar observations, but did mess up the phasecals for today. I have now updated both high- and low-receiver delays. My high-receiver changes affect more than just Ant 14, since many of the delays were off by 0.1 ns from their optimal value, so it will be simplest just to use the end-of-the-day refcal for calibration of today's data.

== Apr 06 ==
'''19:00 UT''' I received an email from Mark at OVRO saying that the Ant 14 receiver had warmed up, which turns out to be due to a vacuum leak in one of the windows (the Hi-freq Receiver, I guess, since the other window is not under vacuum). He will see if the window can be repaired on the telescope, or must be brought down to fix. Meanwhile, we will have no calibrations for the foreseeable future.

== Apr 09 ==
'''13:11 UT''' I discovered this morning that the UDB processing pipeline was not running since Apr. 06. I removed the lock file, and although it shows signs of working, no new files are created yet.

== Apr 10 ==
'''15:00 UT''' The 27-m antenna is back, although still cooling down. Both HPol and VPol on the low-frequency receiver appear to be dead, though.

== Apr 15 ==
'''21:16 UT''' The correlator was showing signs of bad sync again for the last couple of days. I rebooted the correlator at about 20:10 UT, and then measuring delays on 3C84. The network was glitching, though, so it took a little longer than I wanted. I just now got the delays reset, and back on the Sun. There was about 30 minutes of bad solar data until just now.

== Apr 16 ==
'''21:00 UT''' The glitches from yesterday re-appeared, so Natsuha stopped the observation and rebooted the correlator at ~21:00 UT. No good scans could be obtained, so she gave up and resumed the solar observation at 23:28 UT. Another attempt will be made at 3 UT next day when 3c273 will rise.

== Apr 17 ==
'''14:50 UT''' The 3c273 scans for the delay reset last night were unsuccessful due to continuous high wind. This morning Natsuha tried again with 2136+006. The wind was still high but a couple of scans went through without windscram. However, the delay values were very difficult to find, perhaps still due to mild wind speed (9~13 mph).

Another thing - the gliches for which this correlator reboot was done in the first place reappeared this morning. This indicates that the correlator reboot no longer can solve this problem. The delay reset will still be attempted at the earliest possible moment since the glitches appear on only selected bands and other bands' data are fine.

2018 April

2018-04-16T23:36:56Z

Nkuroda: /* Apr 16 */

2018 April

2018-04-16T21:09:40Z

Nkuroda:

Reference Gain Calibration

2018-03-19T21:26:44Z

Nkuroda:

== Procedure for Analysis ==
Reference complex gain calibration refers to determining the "system" amplitude and phase with high precision as a function of IF band (i.e. integrated over each 500 MHz IF band). A typical reference calibration would cover 34 bands, 2 polarizations, and 13 antennas. The routines (on pipeline machine) to retrieve and analyze the data are in the module refcal_anal.py. Start from a time range during which the reference calibration observation occurred (check the [http://ovsa.njit.edu/phasecal/ phasecal results] to see which 1-hr scan had stable phases)

<pre>
import refcal_anal as ra
from util import Time
#example time range of the refcal scan that took place BEFORE the observation
trange=Time(['2017-04-08T14:00','2017-04-08T15:00'])
</pre>



Now read the data from that timerange
<pre>
out=ra.rd_refcal(trange)
</pre>
Note that there are optional arguments that can be given, such as projid='PHASECAL' (the default) and srcid='1229+060', but these are generally not needed.

To correct for differential feed rotation (for refcal data after 05:00 UT on 2017-Jul-01), you can use:
<pre>
out_corr = ra.unrot_refcal(out)
</pre>

Take a look at the phases (averaged over each band):
<pre>
ra.graph(out_corr)
</pre>
By default it displays only bands 5, 11, 17, 23 and polarization XX. To change the bands and polarization to display, use the "bandplt" and 'pol' parameters (better to check more bands).
<pre>
ra.graph(out_corr, bandplt=[5,13,19,25], pol=1)
</pre>



Observations within this time range will be used for averaging to get the reference phases/amplitudes. Data will be flagged if the SNR is less than minsnr, which can be supplied. The default minsnr is set to 1.0. We can further determine a finer selection of time range within this scan that has clean and stable phases if needed, by setting the new timerange in "trange" below.

<pre>
refcal=ra.refcal_anal(out_corr,timerange=trange,scanidx=[0])
</pre>

It will generate four plots. First and second are phases and amplitudes of the data similar as those produced by ra.graph(), but with the selected time range for averaging highlighted (one can use "bandplt" and "pol" to choose bands and polarization to display as well). The 3rd plot is the averaged phase vs. frequency and the 4th is the averaged amplitude vs. frequency. Those data will be our "analyzed" reference calibration data saved in the returned dictionary (named "refcal" here). The dictionary contains the actual complex values (refcal['refcal']), a flag array with the same shape (refcal['flag']), and some timestamps, e.g., refcal['t_mid'] is the middle of the time range used for averaging. Both refcal['refcal'] and refcal['flag'] have a shape of (15, 2, 34) -- which corresponds to # of antennas, # of polarizations, and # of bands.

If you determine some antenna, band, polarization need to be flagged/unflagged, they have to be manually changed in the returned refcal['flag'] array. In this example, Antenna 12 was not tracking, and the algorithm did not pick up all of them, so we have to do this manually -- setting refcal['flag'][11, :, :]=1

<pre>
refcal['flag'][11]=1
</pre>

If satisfied with the results (by looking at the plots), we can go ahead and send them to the SQL database
<pre>
import cal_header as ch
ch.refcal2sql(refcal)
</pre>

To retrieve the refcal data back from SQL database based on, e.g., a solar data one wish to calibrate. We can provide a time:
<pre>
t=Time('2017-04-07T19:40')
refcal=ra.sql2refcal(t)
</pre>
The resulted refcal have three keys: 'amp' (15 x 2 x 34 array), 'pha' (15 x 2 x 34 array), and 'timestamp' (in jd). The refcal data found will be the closest one PRIOR to the supplied observation time.

== Updating the Reference Calibrations Table ==
The table below lists the known good reference calibrations. To facilitate adding entries to this table, do the following, where the time is after the desired refcal, but before any later refcal:
<pre>
t=Time('2017-06-23T19:40') # retrieves the refcal at 13:07 UT on that day
refcal=ra.sql2refcal(t)
ra.graph_results(refcal, savefigs=True)
</pre>
This will create summary plots of the amplitude and phase, will write the two corresponding *.png files into the /common/webplots/refcal folder, and will print as a text string the lines needed to add an entry. Just cut from the terminal and paste into the wiki editor at the appropriate place to preserve time order.

== Getting Band 4 Phase (2017-Dec-24) ==
[[File: Band4_phase_diff.png | thumb | 600px | '''Figure 1:''' LoRX - HiRX phase differences 2017-12-24. The blue points are the phase differences for common frequencies between pcal_lo_all.fsq and pcal_hi_all.fsq, for parallel feeds (XX and YY), and the orange points are the same for the crossed feeds (XY and YX). Note that the XX and XY points are identical (except at high frequencies where noise is greater), while the YY and YX points differ by what looks like a frequency-independent constant. The green curves are quadratic fits to the blue points. The phase differences, and their fits, are nearly identical on each of the 13 antennas, which was not necessarily expected. Most of the slope here is a delay difference of about 5.9 ns.]]

Because the refcals have up to now been done with the high-frequency receiver (HiRX) on Antenna 14, we are only measuring the reference phase on bands 5-34, even though band 4 has been present in the solar data. However, the shape of the phase vs. frequency is very regular, suggesting that if we know this shape (which could change over time, so it should be remeasured from time to time) then we can predict the Band 4 phase based on the phases of the higher bands.

To do this, we measure the phase differences between the low-frequency receiver (LoRX) and HiRx for those frequencies that are in common. It happens that there are many frequencies in common, since the LoRX covers 1-6 GHz and the HiRX covers 3-18 GHz. In fact, the pcal_lo_all.fsq frequency sequence measures bands 1-12 (1-7 GHz) and the phases seem to be coherent from 6-7 GHz. This provides 38 frequencies in common between LoRX and HiRX, from which to determine the phase differences.

The procedure, then, is to measure the LoRX and HiRX phases near the meridian passage of a strong calibrator (so that all of the feeds are approximately parallel and no feed-rotation-correction is needed). We first observe the source with the LoRX receiver using pcal_lo_all.fsq, and then observe the source with the HiRX receiver using pcal_hi_all.fsq. This is part of another procedure where we then rotate the Ant 14 feed by 90 degrees so that it is crossed with respect to the others. It seems that the XX and YY phases of the parallel feeds should be the same as the XY and YX phases of the crossed feeds, and therefore we should get the same phase differences in the two cases.
Here is an example of obtaining the phases of such observations and plotting the phase differences, with corresponding parabolic fits:

npzfiles = ['/common/webplots/phasecal/20171224131548_1229+020.npz','/common/webplots/phasecal/20171224135049_1229+020.npz',
'/common/webplots/phasecal/20171224142048_1229+020.npz','/common/webplots/phasecal/20171224145148_1229+020.npz'] # LoRX, HiRX, HiRX, LoRX
import read_idb as ri
import numpy as np
import matplotlib.pylab as plt
from util import common_val_idx, lobe
outlo1 = ri.read_npz([npzfiles[0]]) # Parallel feed LoRX
outhi1 = ri.read_npz([npzfiles[1]]) # Parallel feed HiRX
outhi2 = ri.read_npz([npzfiles[2]]) # Crossed feed HiRX
outlo2 = ri.read_npz([npzfiles[3]]) # Crossed feed LoRX
phlo1 = np.angle(np.sum(outlo1['x'][ri.bl2ord[13,0:13]],3)) # Parallel LoRX phases averaged over time
phhi1 = np.angle(np.sum(outhi1['x'][ri.bl2ord[13,0:13]],3)) # Parallel HiRx phases averaged over time
phlo2 = np.angle(np.sum(outlo2['x'][ri.bl2ord[13,0:13]],3)) # Crossed LoRX phases averaged over time
phhi2 = np.angle(np.sum(outhi2['x'][ri.bl2ord[13,0:13]],3)) # Crossed HiRx phases averaged over time
idx1,idx2 = common_val_idx(outlo1['fghz'],outhi1['fghz']) # Find common frequency indexes
pdif1 = np.unwrap(lobe(phlo1[:,:,idx1] - phhi1[:,:,idx2])) # Parallel phase differences at common frequencies
pdif2 = np.unwrap(lobe(phlo2[:,:,idx1] - phhi2[:,:,idx2])) # Crossed phase differences
fcom = outlo1['fghz'][idx1] # Common frequencies
band4_fghz = outlo1['fghz'][23:31] # Band 4 frequencies
ps = []
f, ax = plt.subplots(2,13)
for i in range(13):
for j in range(2):
ax[j,i].cla()
ax[j,i].plot(fcom,pdif1[i,j],'.') # Plot parallel XX, YY phase differences
ax[j,i].plot(fcom,pdif2[i,j+2],'.') # Plot crossed XY, YX phase differences
ax[j,i].set_ylim(-1,11)
ps.append(np.polyfit(fcom,pdif1[i,j],2))
ax[j,i].plot(fcom,np.polyval(ps[-1],fcom),'-')

The resulting plot is shown in '''Figure 1''' above. Curiously, the XX and YY phase differences (blue points) differ by about -0.5 radians, while the XX and YX phase differences (blue in top row vs. orange in bottom row) differ by +0.5 radians. Meanwhile, the XX and XY phase differences are essentially identical. This relates to the X vs. Y delays in some manner that has yet to be understood.

The phase differences can be extrapolated to the band4 phases by
for p in np.array(ps)[::2]:
print ('{:8.2f}'*8).format(*np.polyval(p,band4_fghz))

for p in np.array(ps)[1::2]:
print ('{:8.2f}'*8).format(*np.polyval(p,band4_fghz))
which results in the following tables (I put the headings in by hand):

XX Phase Differences for Band 4
2.87 2.89 2.90 2.92 2.94 2.96 2.97 3.00
------ ------ ------ ------ ------ ------ ------ ------
1 -0.596 -0.562 -0.528 -0.494 -0.460 -0.426 -0.392 -0.358
2 -0.574 -0.541 -0.508 -0.475 -0.442 -0.408 -0.375 -0.341
3 -0.567 -0.535 -0.502 -0.469 -0.436 -0.403 -0.370 -0.337
4 -0.617 -0.583 -0.549 -0.514 -0.479 -0.444 -0.409 -0.374
5 -0.664 -0.629 -0.594 -0.559 -0.523 -0.488 -0.452 -0.416
6 -0.653 -0.619 -0.584 -0.549 -0.514 -0.479 -0.444 -0.409
7 -0.593 -0.558 -0.524 -0.489 -0.454 -0.419 -0.384 -0.349
8 -0.565 -0.532 -0.499 -0.466 -0.433 -0.399 -0.366 -0.332
9 -0.720 -0.686 -0.651 -0.617 -0.582 -0.548 -0.513 -0.478
10 -0.542 -0.510 -0.478 -0.446 -0.413 -0.381 -0.348 -0.315
11 -0.660 -0.626 -0.591 -0.557 -0.522 -0.487 -0.452 -0.417
12 -0.521 -0.490 -0.460 -0.429 -0.397 -0.366 -0.335 -0.303
13 -0.793 -0.753 -0.714 -0.674 -0.634 -0.595 -0.555 -0.515

YY Phase Differences for Band 4
2.87 2.89 2.90 2.92 2.94 2.96 2.97 3.00
------ ------ ------ ------ ------ ------ ------ ------
1 -1.016 -0.980 -0.944 -0.909 -0.873 -0.837 -0.801 -0.765
2 -0.988 -0.952 -0.916 -0.880 -0.844 -0.808 -0.772 -0.736
3 -1.012 -0.977 -0.942 -0.906 -0.871 -0.836 -0.800 -0.765
4 -1.008 -0.973 -0.939 -0.904 -0.869 -0.834 -0.799 -0.764
5 -1.065 -1.027 -0.990 -0.953 -0.916 -0.878 -0.841 -0.803
6 -0.924 -0.890 -0.856 -0.823 -0.789 -0.755 -0.721 -0.687
7 -0.584 -0.561 -0.538 -0.515 -0.492 -0.468 -0.444 -0.420
8 -1.038 -1.003 -0.967 -0.931 -0.895 -0.859 -0.823 -0.787
9 -1.079 -1.045 -1.010 -0.975 -0.939 -0.904 -0.869 -0.834
10 -1.155 -1.117 -1.079 -1.041 -1.003 -0.964 -0.926 -0.888
11 -1.046 -1.010 -0.975 -0.939 -0.903 -0.867 -0.831 -0.795
12 -0.781 -0.750 -0.719 -0.688 -0.657 -0.625 -0.594 -0.562
13 -1.163 -1.123 -1.082 -1.042 -1.001 -0.960 -0.919 -0.879

=== Implementation in refcal_anal.py (2018-Mar-05) ===
[[File: delay_curve.png | thumb | 600px | '''Figure 2:''' The band-averaged phase differences in high-frequency bands between 2018-02-05 and 2018-02-07 (reference day). The orange line is a linear fit to the points, forced to pass through (0,0). The green points are the fit values for band 4, which are used to estimate this day's (2018-02-05) band 4 phases. Note that the scatter in ant 6 was because it was not tracking that day.]]
The refcal_anal.py routine has been updated to include the band-averaged band 4 phase calibration. This implementation has the following two components.

:'''1.''' On the day we take the measurements with the above-mentioned LoRX-HiRX observation sequence: It calculates the phase differences between low-frequency and high-frequency measurements over bands 5 - 10, extrapolate it to band 4, and subtract this extrapolated difference from the actual band 4 phases measured by low-frequency receiver to obtain the "reference band 4 phases" as if they were measured by high-frequency receiver. This have to be saved in the SQL database with the special keyword '''lohi=True'''.

:'''2.''' On regular days when we do NOT take measurements with LoRX: It calculates the "estimated band 4 phases" using the closest earlier reference band 4 phases calculated in step #1. First, it calculates the phase differences in high-frequency bands between the target day and the reference day (a "delay curve"). This should be fit with a linear curve passing through zeros like in '''Figure 2'''. We use this fit to obtain the phase difference in band 4 between the target day and the reference day. Knowing the "reference band 4 phases" from #1, we estimate the band 4 phases on arbitrary day.

To do the first task of saving reference refcal, follow the example lines of code below (in pipeline):

from util import Time
import refcal_anal as ra
trange = Time(['2018-03-06T09:30','2018-03-06T10:30']) #has to contain LoRX and HiRX scans
out = ra.rd_refcal(trange)
out_corr = ra.unrot_refcal(out)
refcal = ra.refcal_anal(out_corr, timerange=Time(['2018-03-06 09:30','2018-03-06 10:00']), lohi=True) #timerange has to specify '''only HiRX scan'''
import cal_header as ch
ch.refcal2sql(refcal, lohi=True) #save to SQL

The last plot created will have the calculated band 4 phases added to the usual refcal phase summary plot. There is no special keyword needed for the second task - the routine now automatically calculates the estimated band 4 phases for every refcal, and produces a new plot showing the delay curve like Figure 2, calculated with respect to the most recent reference refcal. If this delay curve starts to show large scatters, it is likely that we need a new LoHi scan to obtain the new reference refcal. It is also important to note that the new reference refcal is needed '''after every delay center reset''', since resetting the delay center introduces some offsets in delay curves and therefore causes the band 4 estimation algorithm to fail.

The estimated band 4 phase errors from this algorithm is currently ~20 degrees. We also would like to eventually obtain the phases at every frequencies instead of band-averaged values.

==== List of Saved Reference Refcals ====

2017-12-24 14:06:50.000
2018-02-07 11:00:48.000
2018-02-22 10:46:51.000
2018-03-06 09:46:48.000
2018-03-07 20:04:50.000

== List of Analyzed Reference Calibrations ==

{| class="wikitable" style="text-align: center; width: 800px; height: 200px;"
|-
| Date || Timestamp || Source || Obs Trange || Scan Idx || Avg Trange || Bands || Phase Plot || Amp Plot || Comments
|-
| 2017/04/02 || 06:36:50 || 3c273 || 04:20~11:00 || All || 05:47~07:26 || 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 || [[:File:20170402_refcal_pha.png|Phase]] || [[:File:20170402_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 11:38:17.
|-
| 2017/04/04 || 09:32:50 || 3c273 || 04:43~10:57 || All || 08:46~10:19 || 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 || [[:File:20170404_refcal_pha.png|Phase]] || [[:File:20170404_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 16:43:51.
|-
| 2017/04/05 ||06:44:10 || 3c273 || 04:17~10:30 || All || 04:27~09:34 || 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 || [[:File:20170405_refcal_pha.png|Phase]] || [[:File:20170405_refcal_amp.png|Amp]] || Ant 12 was not tracking.
|-
| 2017/04/06 || 09:54:50|| 3c273 || 04:14~10:49 || All || 05:39~08:11 || 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 || [[:File:20170406_refcal_pha.png|Phase]] || [[:File:20170406_refcal_amp.png|Amp]] || Ant 12 was not tracking.
|-
| 2017/04/07 || 08:30:51|| 3c273 || 04:00~10:30 || 1, 3, 5, 7, 9, 11, 13, 15, 17 || 07:53~09:10 || 5~34 || [[:File:20170407_refcal_pha.png|Phase]] || [[:File:20170407_refcal_amp.png|Amp]] || Ant 12 was not tracking.
|-
| 2017/04/08 || 06:14:51 || 3c273 || 05:00~10:30 || 1, 3, 5, 7, 9, 11, 13 || 05:00~07:00 || 5~34 || [[:File:20170408_refcal_pha.png|Phase]] || [[:File:20170408_refcal_amp.png|Amp]] || Ant 12 was not tracking. Ant 13 not working. Delay center change at 2017-04-08T03:12:26. Another refcal record is added at 2017-04-09T06:14:45.
|-
| 2017/04/10 || 06:57:10 || 3c273 || 04:30~10:30 || 2, 6, 8 || || 5~34 || [[:File:20170410_refcal_pha.png|Phase]] || [[:File:20170410_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 2017-04-08 13:20:39.
|-
| 2017/04/13 || 13:48:39 || 2136+006 || || 0 || || 5~23 || [http://ovsa.njit.edu/refcal/20170413_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170413_refcal_amp.png Amp] ||
|-
| 2017/04/16 || 06:36:48 || 3c273 || 03:00~11:00 || || 05:55~07:20 || 5~34 || [[:File:20170416_refcal_pha.png|Phase]] || [[:File:20170416_refcal_amp.png|Amp]] || Ant 12 was not tracking.
|-
| 2017/04/17 || 06:41:51 || 3c273 || 03:29~10:07 || All || 05:55~07:29 || 5~34 || [[:File:20170417_refcal_pha.png|Phase]] || [[:File:20170417_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 19:12:58.
|-
| 2017/04/26 || 08:06:52 || 3c273 || 02:50~09:28 || All || 07:21~08:57 || 5~34 || [[:File:20170426_refcal_pha.png|Phase]] || [[:File:20170426_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 04:37:28 and 11:51:26.
|-
| 2017/06/11 || 12:56:22 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170611_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170611_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/14 || 02:33:19 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170614_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170614_refcal_amp.png Amp] || No calibration for: Ant 8 Ant 12
|-
| 2017/06/14 || 13:01:19 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170614_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170614_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/15 || 13:05:48 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170615_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170615_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/16 || 13:05:48 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170616_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170616_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/20 || 13:06:26 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170620_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170620_refcal_amp.png Amp] || No calibration for: Ant 1 Ant 12
|-
| 2017/06/21 || 13:06:38 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170621_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170621_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/22 || 13:06:53 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170622_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170622_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/23 || 13:07:09 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170623_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170623_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/24 || 02:25:49 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170624_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170624_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/24 || 13:07:25 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170624_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170624_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/25 || 13:07:43 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170625_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170625_refcal_amp.png Amp] || No calibration for: Ant 10 Ant 12
|-
| 2017/06/26 || 13:15:47 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170626_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170626_refcal_amp.png Amp] || No calibration for: Ant 10 Ant 12
|-
| 2017/06/27 || 13:02:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170627_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170627_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/30 || 02:47:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170630_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170630_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/07/01 || 02:44:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170701_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170701_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/07/02 || 03:01:20 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170702_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170702_refcal_amp.png Amp] ||
|-
| 2017/07/03 || 02:47:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170703_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170703_refcal_amp.png Amp] || No calibration for: Ant 10
|-
| 2017/07/04 || 02:47:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170704_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170704_refcal_amp.png Amp] ||
|-
| 2017/07/05 || 02:55:19 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170705_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170705_refcal_amp.png Amp] ||
|-
| 2017/07/06 || 02:47:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170706_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170706_refcal_amp.png Amp] ||
|-
| 2017/07/07 || 13:12:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170707_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170707_refcal_amp.png Amp] ||
|-
| 2017/07/09 || 02:35:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170709_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170709_refcal_amp.png Amp] ||
|-
| 2017/07/09 || 13:16:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170709_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170709_refcal_amp.png Amp] ||
|-
| 2017/07/10 || 13:14:17 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170710_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170710_refcal_amp.png Amp] ||
|-
| 2017/07/11 || 13:14:18 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170711_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170711_refcal_amp.png Amp] ||
|-
| 2017/07/12 || 13:14:24 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170712_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170712_refcal_amp.png Amp] ||
|-
| 2017/07/13 || 13:14:59 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170713_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170713_refcal_amp.png Amp] ||
|-
| 2017/07/14 || 13:15:35 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170714_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170714_refcal_amp.png Amp] ||
|-
| 2017/07/16 || 02:48:33 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170716_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170716_refcal_amp.png Amp] ||
|-
| 2017/07/16 || 13:16:48 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170716_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170716_refcal_amp.png Amp] ||
|-
| 2017/07/17 || 13:14:54 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170717_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170717_refcal_amp.png Amp] ||
|-
| 2017/07/18 || 13:15:31 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170718_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170718_refcal_amp.png Amp] ||
|-
| 2017/07/19 || 13:16:16 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170719_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170719_refcal_amp.png Amp] ||
|-
| 2017/07/20 || 13:16:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170720_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170720_refcal_amp.png Amp] || No calibration for: Ant 10
|-
| 2017/07/21 || 13:20:57 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170721_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170721_refcal_amp.png Amp] ||
|-
| 2017/07/22 || 13:21:36 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170722_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170722_refcal_amp.png Amp] ||
|-
| 2017/07/23 || 13:34:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170723_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170723_refcal_amp.png Amp] ||
|-
| 2017/07/24 || 13:22:58 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170724_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170724_refcal_amp.png Amp] ||
|-
| 2017/07/25 || 13:23:38 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170725_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170725_refcal_amp.png Amp] ||
|-
| 2017/07/26 || 18:00:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170726_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170726_refcal_amp.png Amp] ||
|-
| 2017/07/28 || 02:42:36 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170728_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170728_refcal_amp.png Amp] ||
|-
| 2017/07/29 || 13:37:40 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170729_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170729_refcal_amp.png Amp] ||
|-
| 2017/07/31 || 13:27:05 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170731_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170731_refcal_amp.png Amp] ||
|-
| 2017/08/01 || 13:28:30 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170801_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170801_refcal_amp.png Amp] ||
|-
| 2017/08/02 || 13:29:13 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170802_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170802_refcal_amp.png Amp] ||
|-
| 2017/08/03 || 13:29:59 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170803_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170803_refcal_amp.png Amp] ||
|-
| 2017/08/05 || 02:35:58 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170805_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170805_refcal_amp.png Amp] ||
|-
| 2017/08/05 || 13:31:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170805_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170805_refcal_amp.png Amp] ||
|-
| 2017/08/06 || 13:32:06 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170806_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170806_refcal_amp.png Amp] ||
|-
| 2017/08/07 || 13:32:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170807_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170807_refcal_amp.png Amp] ||
|-
| 2017/08/08 || 13:33:33 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170808_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170808_refcal_amp.png Amp] ||
|-
| 2017/08/11 || 12:47:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170811_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170811_refcal_amp.png Amp] ||
|-
| 2017/08/12 || 12:43:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170812_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170812_refcal_amp.png Amp] || No calibration for: Ant 9
|-
| 2017/08/13 || 12:39:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170813_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170813_refcal_amp.png Amp] ||
|-
| 2017/08/14 || 12:34:19 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170814_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170814_refcal_amp.png Amp] ||
|-
| 2017/08/15 || 12:31:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170815_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170815_refcal_amp.png Amp] ||
|-
| 2017/08/16 || 12:27:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170816_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170816_refcal_amp.png Amp] ||
|-
| 2017/08/17 || 12:23:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170817_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170817_refcal_amp.png Amp] ||
|-
| 2017/08/18 || 12:19:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170818_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170818_refcal_amp.png Amp] ||
|-
| 2017/08/19 || 12:15:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170819_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170819_refcal_amp.png Amp] ||
|-
| 2017/08/21 || 12:07:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170821_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170821_refcal_amp.png Amp] ||
|-
| 2017/08/22 || 12:03:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170822_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170822_refcal_amp.png Amp] ||
|-
| 2017/08/23 || 12:14:51 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170823_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170823_refcal_amp.png Amp] ||
|-
| 2017/08/24 || 11:55:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170824_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170824_refcal_amp.png Amp] ||
|-
| 2017/08/25 || 14:01:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170825_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170825_refcal_amp.png Amp] ||
|-
| 2017/08/26 || 13:57:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170826_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170826_refcal_amp.png Amp] ||
|-
| 2017/08/28 || 01:03:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170828_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170828_refcal_amp.png Amp] ||
|-
| 2017/08/29 || 00:59:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170829_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170829_refcal_amp.png Amp] ||
|-
| 2017/08/29 || 13:49:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170829_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170829_refcal_amp.png Amp] ||
|-
| 2017/08/30 || 13:49:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170830_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170830_refcal_amp.png Amp] ||
|-
| 2017/08/31 || 13:50:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170831_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170831_refcal_amp.png Amp] ||
|-
| 2017/09/01 || 13:51:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170901_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170901_refcal_amp.png Amp] ||
|-
| 2017/09/02 || 13:52:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170902_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170902_refcal_amp.png Amp] ||
|-
| 2017/09/03 || 13:53:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170903_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170903_refcal_amp.png Amp] ||
|-
| 2017/09/04 || 13:54:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170904_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170904_refcal_amp.png Amp] ||
|-
| 2017/09/05 || 13:54:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170905_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170905_refcal_amp.png Amp] ||
|-
| 2017/09/06 || 13:55:58 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170906_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170906_refcal_amp.png Amp] ||
|-
| 2017/09/07 || 13:56:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170907_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170907_refcal_amp.png Amp] ||
|-
| 2017/09/08 || 13:56:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170908_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170908_refcal_amp.png Amp] ||
|-
| 2017/09/10 || 00:01:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170910_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170910_refcal_amp.png Amp] ||
|-
| 2017/09/10 || 13:57:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170910_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170910_refcal_amp.png Amp] ||
|-
| 2017/09/11 || 13:58:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170911_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170911_refcal_amp.png Amp] ||
|-
| 2017/09/12 || 14:00:11 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170912_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170912_refcal_amp.png Amp] ||
|-
| 2017/09/14 || 04:15:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170914_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170914_refcal_amp.png Amp] ||Refcal at around 14 UT is also good.
|-
| 2017/09/14 || 14:01:48 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170914_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170914_refcal_amp.png Amp] ||
|-
| 2017/09/15 || 14:39:27 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170915_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170915_refcal_amp.png Amp] ||
|-
| 2017/09/16 || 13:46:56 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170916_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170916_refcal_amp.png Amp] ||
|-
| 2017/09/17 || 13:47:46 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170917_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170917_refcal_amp.png Amp] ||
|-
| 2017/09/18 || 14:05:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170918_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170918_refcal_amp.png Amp] ||
|-
| 2017/09/19 || 14:06:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170919_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170919_refcal_amp.png Amp] ||
|-
| 2017/09/22 || 14:08:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170922_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170922_refcal_amp.png Amp] ||
|-
| 2017/09/23 || 14:09:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170923_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170923_refcal_amp.png Amp] ||
|-
| 2017/09/24 || 14:10:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170924_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170924_refcal_amp.png Amp] ||
|-
| 2017/09/25 || 14:17:33 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170925_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170925_refcal_amp.png Amp] ||
|-
| 2017/09/26 || 14:10:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170926_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170926_refcal_amp.png Amp] ||
|-
| 2017/09/27 || 14:06:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170927_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170927_refcal_amp.png Amp] ||
|-
| 2017/09/28 || 14:02:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170928_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170928_refcal_amp.png Amp] ||
|-
| 2017/09/29 || 14:01:20 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170929_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170929_refcal_amp.png Amp] ||
|-
| 2017/09/30 || 13:54:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170930_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170930_refcal_amp.png Amp] ||
|-
| 2017/10/01 || 13:50:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171001_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171001_refcal_amp.png Amp] ||
|-
| 2017/10/02 || 13:47:28 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171002_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171002_refcal_amp.png Amp] ||
|-
| 2017/10/03 || 13:43:25 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171003_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171003_refcal_amp.png Amp] ||
|-
| 2017/10/04 || 13:40:52 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171004_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171004_refcal_amp.png Amp] || No calibration for: Ant 10
|-
| 2017/10/06 || 02:42:39 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171006_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171006_refcal_amp.png Amp] ||
|-
| 2017/10/06 || 13:32:53 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171006_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171006_refcal_amp.png Amp] ||
|-
| 2017/10/07 || 13:30:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171007_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171007_refcal_amp.png Amp] ||
|-
| 2017/10/08 || 13:26:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171008_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171008_refcal_amp.png Amp] ||
|-
| 2017/10/10 || 02:31:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171010_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171010_refcal_amp.png Amp] ||
|-
| 2017/10/11 || 02:23:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171011_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171011_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/12 || 02:19:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171012_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171012_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/13 || 02:15:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171013_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171013_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/13 || 12:54:23 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171013_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171013_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/14 || 12:50:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171014_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171014_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/16 || 02:07:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171016_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171016_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/18 || 01:59:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171018_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171018_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/19 || 12:30:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171019_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171019_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/20 || 12:22:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171021_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171021_refcal_amp.png Amp] ||
|-
| 2017/10/21 || 12:22:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171021_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171021_refcal_amp.png Amp] ||
|-
| 2017/10/22 || 12:18:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171022_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171022_refcal_amp.png Amp] ||
|-
| 2017/10/24 || 12:10:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171024_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171024_refcal_amp.png Amp] || Few frequencies have unusually high amplitudes.
|-
| 2017/10/24 || 01:35:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171024_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171024_refcal_amp.png Amp] ||
|-
| 2017/10/25 || 01:31:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171025_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171025_refcal_amp.png Amp] ||
|-
| 2017/10/26 || 12:02:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171026_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171026_refcal_amp.png Amp] ||
|-
| 2017/10/27 || 11:58:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171027_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171027_refcal_amp.png Amp] ||
|-
| 2017/10/28 || 11:54:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171028_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171028_refcal_amp.png Amp] ||
|-
| 2017/10/29 || 11:50:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171029_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171029_refcal_amp.png Amp] || Ant 8 was down.
|-
| 2017/11/02 || 14:50:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171102_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171102_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/03 || 14:52:20 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171103_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171103_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/04 || 14:53:51 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171104_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171104_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/05 || 14:54:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171105_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171105_refcal_amp.png Amp] || Ant 3 was down. No calibration for: Ant 3
|-
| 2017/11/07 || 00:39:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171107_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171107_00_refcal_amp.png Amp] ||
|-
| 2017/11/07 || 14:56:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171107_14_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171107_14_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/08 || 14:57:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171108_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171108_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/09 || 14:58:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171109_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171109_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/10 || 15:00:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171110_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171110_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/12 || 00:22:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171112_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171112_00_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/12 || 15:02:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171112_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171112_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/15 || 00:12:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171115_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171115_00_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/15 || 15:07:00 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171115_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171115_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/16 || 15:08:14 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171116_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171116_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/17 || 15:09:29 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171117_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171117_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/19 || 00:13:26 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171119_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171119_00_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/19 || 15:11:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171119_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171119_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/21 || 00:11:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171121_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171121_00_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/22 || 00:10:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171122_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171122_00_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/22 || 15:15:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171122_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171122_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/23 || 15:16:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171123_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171123_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/24 || 15:18:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171124_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171124_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/25 || 15:19:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171125_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171125_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/26 || 15:20:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171126_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171126_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/12/03 || 00:05:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171203_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171203_00_refcal_amp.png Amp] ||
|-
| 2017/12/04 || 15:29:13 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171204_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171204_15_refcal_amp.png Amp] || No calibration on Ant 3 and 6
|-
| 2017/12/06 || 00:05:14 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171206_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171206_00_refcal_amp.png Amp] || First refcal on 2017-12-05 is bad. No Ant3 calibration.
|-
| 2017/12/07 || 00:05:06 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171207_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171207_00_refcal_amp.png Amp] || First refcal on 2017-12-06 had Windscram. No Ant3 calibration.
|-
| 2017/12/07 || 15:32:07 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171207_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171207_15_refcal_amp.png Amp] || No Ant 3 calibration.
|-
| 2017/12/08 || 15:33:05 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171208_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171208_15_refcal_amp.png Amp] || No Ant3 calibration.
|-
| 2017/12/13 || 15:37:19 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171213_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171213_15_refcal_amp.png Amp] ||
|-
| 2017/12/18 || 00:06:26 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171218_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171218_00_refcal_amp.png Amp] || No calibration for: Ant 4
|-
| 2017/12/18 || 15:40:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171218_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171218_15_refcal_amp.png Amp] || No calibration for: Ant 4 Ant 6
|-
| 2017/12/19 || 23:57:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171219_23_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171219_23_refcal_amp.png Amp] ||
|-
| 2017/12/22 || 15:27:55 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171222_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171222_15_refcal_amp.png Amp] ||
|-
| 2017/12/23 || 15:43:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171223_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171223_15_refcal_amp.png Amp] ||
|-
| 2017/12/24 || 15:42:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171224_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171224_15_refcal_amp.png Amp] ||
|-
| 2017/12/25 || 15:44:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171225_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171225_15_refcal_amp.png Amp] ||
|-
| 2017/12/27 || 00:10:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171227_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171227_00_refcal_amp.png Amp] ||
|-
| 2017/12/27 || 15:44:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171227_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171227_15_refcal_amp.png Amp] ||
|-
| 2017/12/28 || 15:44:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171228_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171228_15_refcal_amp.png Amp] ||
|-
| 2017/12/29 || 15:45:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171229_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171229_15_refcal_amp.png Amp] ||
|-
| 2017/12/30 || 15:44:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171230_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171230_15_refcal_amp.png Amp] ||
|-
| 2017/12/31 || 15:45:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171231_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171231_15_refcal_amp.png Amp] ||
|-
| 2018/01/01 || 15:45:32 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180101_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180101_15_refcal_amp.png Amp] || No calibration on Ant 6
|-
| 2018/01/02 || 15:45:32 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180102_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180102_15_refcal_amp.png Amp] ||
|-
| 2018/01/04 || 00:17:48 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180104_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180104_00_refcal_amp.png Amp] ||
|-
| 2018/01/04 || 15:45:31 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180104_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180104_15_refcal_amp.png Amp] ||
|-
| 2018/01/06 || 00:19:45 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180106_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180106_00_refcal_amp.png Amp] ||
|-
| 2018/01/07 || 15:45:08 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180107_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180107_15_refcal_amp.png Amp] ||
|-
| 2018/01/08 || 15:44:57 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180108_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180108_15_refcal_amp.png Amp] ||
|-
| 2018/01/10 || 00:23:57 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180110_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180110_00_refcal_amp.png Amp] ||
|-
| 2018/01/15 || 15:42:19 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180115_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180115_15_refcal_amp.png Amp] ||
|-
| 2018/01/16 || 15:41:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180116_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180116_15_refcal_amp.png Amp] ||
|-
| 2018/01/24 || 00:34:04 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180124_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180124_00_refcal_amp.png Amp] ||
|-
| 2018/02/13 || 01:04:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180213_01_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180213_01_refcal_amp.png Amp] ||
|-
| 2018/02/13 || 14:07:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180213_14_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180213_14_refcal_amp.png Amp] ||
|-
}

Reference Gain Calibration

2018-03-07T21:00:25Z

Nkuroda: /* List of Saved Reference Refcals */

== Procedure for Analysis ==
Reference complex gain calibration refers to determining the "system" amplitude and phase with high precision as a function of IF band (i.e. integrated over each 500 MHz IF band). A typical reference calibration would cover 34 bands, 2 polarizations, and 13 antennas. The routines (on pipeline machine) to retrieve and analyze the data are in the module refcal_anal.py. Start from a time range during which the reference calibration observation occurred (check the [http://ovsa.njit.edu/phasecal/ phasecal results] to see which 1-hr scan had stable phases)

<pre>
import refcal_anal as ra
from util import Time
#example time range of the refcal scan that took place BEFORE the observation
trange=Time(['2017-04-08T14:00','2017-04-08T15:00'])
</pre>



Now read the data from that timerange
<pre>
out=ra.rd_refcal(trange)
</pre>
Note that there are optional arguments that can be given, such as projid='PHASECAL' (the default) and srcid='1229+060', but these are generally not needed.

To correct for differential feed rotation (for refcal data after 05:00 UT on 2017-Jul-01), you can use:
<pre>
out_corr = ra.unrot_refcal(out)
</pre>

Take a look at the phases (averaged over each band):
<pre>
ra.graph(out_corr)
</pre>
By default it displays only bands 5, 11, 17, 23 and polarization XX. To change the bands and polarization to display, use the "bandplt" and 'pol' parameters (better to check more bands).
<pre>
ra.graph(out_corr, bandplt=[5,13,19,25], pol=1)
</pre>



Observations within this time range will be used for averaging to get the reference phases/amplitudes. Data will be flagged if the SNR is less than minsnr, which can be supplied. The default minsnr is set to 1.0. We can further determine a finer selection of time range within this scan that has clean and stable phases if needed, by setting the new timerange in "trange" below.

<pre>
refcal=ra.refcal_anal(out_corr,timerange=trange,scanidx=[0])
</pre>

It will generate four plots. First and second are phases and amplitudes of the data similar as those produced by ra.graph(), but with the selected time range for averaging highlighted (one can use "bandplt" and "pol" to choose bands and polarization to display as well). The 3rd plot is the averaged phase vs. frequency and the 4th is the averaged amplitude vs. frequency. Those data will be our "analyzed" reference calibration data saved in the returned dictionary (named "refcal" here). The dictionary contains the actual complex values (refcal['refcal']), a flag array with the same shape (refcal['flag']), and some timestamps, e.g., refcal['t_mid'] is the middle of the time range used for averaging. Both refcal['refcal'] and refcal['flag'] have a shape of (15, 2, 34) -- which corresponds to # of antennas, # of polarizations, and # of bands.

If you determine some antenna, band, polarization need to be flagged/unflagged, they have to be manually changed in the returned refcal['flag'] array. In this example, Antenna 12 was not tracking, and the algorithm did not pick up all of them, so we have to do this manually -- setting refcal['flag'][11, :, :]=1

<pre>
refcal['flag'][11]=1
</pre>

If satisfied with the results (by looking at the plots), we can go ahead and send them to the SQL database
<pre>
import cal_header as ch
ch.refcal2sql(refcal)
</pre>

To retrieve the refcal data back from SQL database based on, e.g., a solar data one wish to calibrate. We can provide a time:
<pre>
t=Time('2017-04-07T19:40')
refcal=ra.sql2refcal(t)
</pre>
The resulted refcal have three keys: 'amp' (15 x 2 x 34 array), 'pha' (15 x 2 x 34 array), and 'timestamp' (in jd). The refcal data found will be the closest one PRIOR to the supplied observation time.

== Updating the Reference Calibrations Table ==
The table below lists the known good reference calibrations. To facilitate adding entries to this table, do the following, where the time is after the desired refcal, but before any later refcal:
<pre>
t=Time('2017-06-23T19:40') # retrieves the refcal at 13:07 UT on that day
refcal=ra.sql2refcal(t)
ra.graph_results(refcal, savefigs=True)
</pre>
This will create summary plots of the amplitude and phase, will write the two corresponding *.png files into the /common/webplots/refcal folder, and will print as a text string the lines needed to add an entry. Just cut from the terminal and paste into the wiki editor at the appropriate place to preserve time order.

== Getting Band 4 Phase (2017-Dec-24) ==
[[File: Band4_phase_diff.png | thumb | 600px | '''Figure 1:''' LoRX - HiRX phase differences 2017-12-24. The blue points are the phase differences for common frequencies between pcal_lo_all.fsq and pcal_hi_all.fsq, for parallel feeds (XX and YY), and the orange points are the same for the crossed feeds (XY and YX). Note that the XX and XY points are identical (except at high frequencies where noise is greater), while the YY and YX points differ by what looks like a frequency-independent constant. The green curves are quadratic fits to the blue points. The phase differences, and their fits, are nearly identical on each of the 13 antennas, which was not necessarily expected. Most of the slope here is a delay difference of about 5.9 ns.]]

Because the refcals have up to now been done with the high-frequency receiver (HiRX) on Antenna 14, we are only measuring the reference phase on bands 5-34, even though band 4 has been present in the solar data. However, the shape of the phase vs. frequency is very regular, suggesting that if we know this shape (which could change over time, so it should be remeasured from time to time) then we can predict the Band 4 phase based on the phases of the higher bands.

To do this, we measure the phase differences between the low-frequency receiver (LoRX) and HiRx for those frequencies that are in common. It happens that there are many frequencies in common, since the LoRX covers 1-6 GHz and the HiRX covers 3-18 GHz. In fact, the pcal_lo_all.fsq frequency sequence measures bands 1-12 (1-7 GHz) and the phases seem to be coherent from 6-7 GHz. This provides 38 frequencies in common between LoRX and HiRX, from which to determine the phase differences.

The procedure, then, is to measure the LoRX and HiRX phases near the meridian passage of a strong calibrator (so that all of the feeds are approximately parallel and no feed-rotation-correction is needed). We first observe the source with the LoRX receiver using pcal_lo_all.fsq, and then observe the source with the HiRX receiver using pcal_hi_all.fsq. This is part of another procedure where we then rotate the Ant 14 feed by 90 degrees so that it is crossed with respect to the others. It seems that the XX and YY phases of the parallel feeds should be the same as the XY and YX phases of the crossed feeds, and therefore we should get the same phase differences in the two cases.
Here is an example of obtaining the phases of such observations and plotting the phase differences, with corresponding parabolic fits:

npzfiles = ['/common/webplots/phasecal/20171224131548_1229+020.npz','/common/webplots/phasecal/20171224135049_1229+020.npz',
'/common/webplots/phasecal/20171224142048_1229+020.npz','/common/webplots/phasecal/20171224145148_1229+020.npz'] # LoRX, HiRX, HiRX, LoRX
import read_idb as ri
import numpy as np
import matplotlib.pylab as plt
from util import common_val_idx, lobe
outlo1 = ri.read_npz([npzfiles[0]]) # Parallel feed LoRX
outhi1 = ri.read_npz([npzfiles[1]]) # Parallel feed HiRX
outhi2 = ri.read_npz([npzfiles[2]]) # Crossed feed HiRX
outlo2 = ri.read_npz([npzfiles[3]]) # Crossed feed LoRX
phlo1 = np.angle(np.sum(outlo1['x'][ri.bl2ord[13,0:13]],3)) # Parallel LoRX phases averaged over time
phhi1 = np.angle(np.sum(outhi1['x'][ri.bl2ord[13,0:13]],3)) # Parallel HiRx phases averaged over time
phlo2 = np.angle(np.sum(outlo2['x'][ri.bl2ord[13,0:13]],3)) # Crossed LoRX phases averaged over time
phhi2 = np.angle(np.sum(outhi2['x'][ri.bl2ord[13,0:13]],3)) # Crossed HiRx phases averaged over time
idx1,idx2 = common_val_idx(outlo1['fghz'],outhi1['fghz']) # Find common frequency indexes
pdif1 = np.unwrap(lobe(phlo1[:,:,idx1] - phhi1[:,:,idx2])) # Parallel phase differences at common frequencies
pdif2 = np.unwrap(lobe(phlo2[:,:,idx1] - phhi2[:,:,idx2])) # Crossed phase differences
fcom = outlo1['fghz'][idx1] # Common frequencies
band4_fghz = outlo1['fghz'][23:31] # Band 4 frequencies
ps = []
f, ax = plt.subplots(2,13)
for i in range(13):
for j in range(2):
ax[j,i].cla()
ax[j,i].plot(fcom,pdif1[i,j],'.') # Plot parallel XX, YY phase differences
ax[j,i].plot(fcom,pdif2[i,j+2],'.') # Plot crossed XY, YX phase differences
ax[j,i].set_ylim(-1,11)
ps.append(np.polyfit(fcom,pdif1[i,j],2))
ax[j,i].plot(fcom,np.polyval(ps[-1],fcom),'-')

The resulting plot is shown in '''Figure 1''' above. Curiously, the XX and YY phase differences (blue points) differ by about -0.5 radians, while the XX and YX phase differences (blue in top row vs. orange in bottom row) differ by +0.5 radians. Meanwhile, the XX and XY phase differences are essentially identical. This relates to the X vs. Y delays in some manner that has yet to be understood.

The phase differences can be extrapolated to the band4 phases by
for p in np.array(ps)[::2]:
print ('{:8.2f}'*8).format(*np.polyval(p,band4_fghz))

for p in np.array(ps)[1::2]:
print ('{:8.2f}'*8).format(*np.polyval(p,band4_fghz))
which results in the following tables (I put the headings in by hand):

XX Phase Differences for Band 4
2.87 2.89 2.90 2.92 2.94 2.96 2.97 3.00
------ ------ ------ ------ ------ ------ ------ ------
1 -0.596 -0.562 -0.528 -0.494 -0.460 -0.426 -0.392 -0.358
2 -0.574 -0.541 -0.508 -0.475 -0.442 -0.408 -0.375 -0.341
3 -0.567 -0.535 -0.502 -0.469 -0.436 -0.403 -0.370 -0.337
4 -0.617 -0.583 -0.549 -0.514 -0.479 -0.444 -0.409 -0.374
5 -0.664 -0.629 -0.594 -0.559 -0.523 -0.488 -0.452 -0.416
6 -0.653 -0.619 -0.584 -0.549 -0.514 -0.479 -0.444 -0.409
7 -0.593 -0.558 -0.524 -0.489 -0.454 -0.419 -0.384 -0.349
8 -0.565 -0.532 -0.499 -0.466 -0.433 -0.399 -0.366 -0.332
9 -0.720 -0.686 -0.651 -0.617 -0.582 -0.548 -0.513 -0.478
10 -0.542 -0.510 -0.478 -0.446 -0.413 -0.381 -0.348 -0.315
11 -0.660 -0.626 -0.591 -0.557 -0.522 -0.487 -0.452 -0.417
12 -0.521 -0.490 -0.460 -0.429 -0.397 -0.366 -0.335 -0.303
13 -0.793 -0.753 -0.714 -0.674 -0.634 -0.595 -0.555 -0.515

YY Phase Differences for Band 4
2.87 2.89 2.90 2.92 2.94 2.96 2.97 3.00
------ ------ ------ ------ ------ ------ ------ ------
1 -1.016 -0.980 -0.944 -0.909 -0.873 -0.837 -0.801 -0.765
2 -0.988 -0.952 -0.916 -0.880 -0.844 -0.808 -0.772 -0.736
3 -1.012 -0.977 -0.942 -0.906 -0.871 -0.836 -0.800 -0.765
4 -1.008 -0.973 -0.939 -0.904 -0.869 -0.834 -0.799 -0.764
5 -1.065 -1.027 -0.990 -0.953 -0.916 -0.878 -0.841 -0.803
6 -0.924 -0.890 -0.856 -0.823 -0.789 -0.755 -0.721 -0.687
7 -0.584 -0.561 -0.538 -0.515 -0.492 -0.468 -0.444 -0.420
8 -1.038 -1.003 -0.967 -0.931 -0.895 -0.859 -0.823 -0.787
9 -1.079 -1.045 -1.010 -0.975 -0.939 -0.904 -0.869 -0.834
10 -1.155 -1.117 -1.079 -1.041 -1.003 -0.964 -0.926 -0.888
11 -1.046 -1.010 -0.975 -0.939 -0.903 -0.867 -0.831 -0.795
12 -0.781 -0.750 -0.719 -0.688 -0.657 -0.625 -0.594 -0.562
13 -1.163 -1.123 -1.082 -1.042 -1.001 -0.960 -0.919 -0.879

== Implementation in refcal_anal.py (2018-Mar-05) ==
[[File: delay_curve.png | thumb | 600px | '''Figure 2:''' The band-averaged phase differences in high-frequency bands between 2018-02-05 and 2018-02-07 (reference day). The orange line is a linear fit to the points, forced to pass through (0,0). The green points are the fit values for band 4, which are used to estimate this day's (2018-02-05) band 4 phases. Note that the scatter in ant 6 was because it was not tracking that day.]]
The refcal_anal.py routine has been updated to include the band-averaged band 4 phase calibration. This implementation has the following two components.

:'''1.''' On the day we take the measurements with the above-mentioned LoRX-HiRX observation sequence: It calculates the phase differences between low-frequency and high-frequency measurements over bands 5 - 10, extrapolate it to band 4, and subtract this extrapolated difference from the actual band 4 phases measured by low-frequency receiver to obtain the "reference band 4 phases" as if they were measured by high-frequency receiver. This have to be saved in the SQL database with the special keyword '''lohi=True'''.

:'''2.''' On regular days when we do NOT take measurements with LoRX: It calculates the "estimated band 4 phases" using the closest earlier reference band 4 phases calculated in step #1. First, it calculates the phase differences in high-frequency bands between the target day and the reference day (a "delay curve"). This should be fit with a linear curve passing through zeros like in '''Figure 2'''. We use this fit to obtain the phase difference in band 4 between the target day and the reference day. Knowing the "reference band 4 phases" from #1, we estimate the band 4 phases on arbitrary day.

To do the first task of saving reference refcal, follow the example lines of code below (in pipeline):

from util import Time
import refcal_anal as ra
trange = Time(['2018-03-06T09:30','2018-03-06T10:30']) #has to contain LoRX and HiRX scans
out = ra.rd_refcal(trange)
out_corr = ra.unrot_refcal(out)
refcal = ra.refcal_anal(out_corr, timerange=Time(['2018-03-06 09:30','2018-03-06 10:00']), lohi=True) #timerange has to specify '''only HiRX scan'''
import cal_header as ch
ch.refcal2sql(refcal, lohi=True) #save to SQL

The last plot created will have the calculated band 4 phases added to the usual refcal phase summary plot. There is no special keyword needed for the second task - the routine now automatically calculates the estimated band 4 phases for every refcal, and produces a new plot showing the delay curve like Figure 2, calculated with respect to the most recent reference refcal. If this delay curve starts to show large scatters, it is likely that we need a new LoHi scan to obtain the new reference refcal. It is also important to note that the new reference refcal is needed '''after every delay center reset''', since resetting the delay center introduces some offsets in delay curves and therefore causes the band 4 estimation algorithm to fail.

The estimated band 4 phase errors from this algorithm is currently ~20 degrees. We also would like to eventually obtain the phases at every frequencies instead of band-averaged values.

=== List of Saved Reference Refcals ===

2017-12-24 14:06:50.000
2018-02-07 11:00:48.000
2018-02-22 10:46:51.000
2018-03-06 09:46:48.000
2018-03-07 20:04:50.000

== List of Analyzed Reference Calibrations ==

{| class="wikitable" style="text-align: center; width: 800px; height: 200px;"
|-
| Date || Timestamp || Source || Obs Trange || Scan Idx || Avg Trange || Bands || Phase Plot || Amp Plot || Comments
|-
| 2017/04/02 || 06:36:50 || 3c273 || 04:20~11:00 || All || 05:47~07:26 || 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 || [[:File:20170402_refcal_pha.png|Phase]] || [[:File:20170402_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 11:38:17.
|-
| 2017/04/04 || 09:32:50 || 3c273 || 04:43~10:57 || All || 08:46~10:19 || 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 || [[:File:20170404_refcal_pha.png|Phase]] || [[:File:20170404_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 16:43:51.
|-
| 2017/04/05 ||06:44:10 || 3c273 || 04:17~10:30 || All || 04:27~09:34 || 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 || [[:File:20170405_refcal_pha.png|Phase]] || [[:File:20170405_refcal_amp.png|Amp]] || Ant 12 was not tracking.
|-
| 2017/04/06 || 09:54:50|| 3c273 || 04:14~10:49 || All || 05:39~08:11 || 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 || [[:File:20170406_refcal_pha.png|Phase]] || [[:File:20170406_refcal_amp.png|Amp]] || Ant 12 was not tracking.
|-
| 2017/04/07 || 08:30:51|| 3c273 || 04:00~10:30 || 1, 3, 5, 7, 9, 11, 13, 15, 17 || 07:53~09:10 || 5~34 || [[:File:20170407_refcal_pha.png|Phase]] || [[:File:20170407_refcal_amp.png|Amp]] || Ant 12 was not tracking.
|-
| 2017/04/08 || 06:14:51 || 3c273 || 05:00~10:30 || 1, 3, 5, 7, 9, 11, 13 || 05:00~07:00 || 5~34 || [[:File:20170408_refcal_pha.png|Phase]] || [[:File:20170408_refcal_amp.png|Amp]] || Ant 12 was not tracking. Ant 13 not working. Delay center change at 2017-04-08T03:12:26. Another refcal record is added at 2017-04-09T06:14:45.
|-
| 2017/04/10 || 06:57:10 || 3c273 || 04:30~10:30 || 2, 6, 8 || || 5~34 || [[:File:20170410_refcal_pha.png|Phase]] || [[:File:20170410_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 2017-04-08 13:20:39.
|-
| 2017/04/13 || 13:48:39 || 2136+006 || || 0 || || 5~23 || [http://ovsa.njit.edu/refcal/20170413_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170413_refcal_amp.png Amp] ||
|-
| 2017/04/16 || 06:36:48 || 3c273 || 03:00~11:00 || || 05:55~07:20 || 5~34 || [[:File:20170416_refcal_pha.png|Phase]] || [[:File:20170416_refcal_amp.png|Amp]] || Ant 12 was not tracking.
|-
| 2017/04/17 || 06:41:51 || 3c273 || 03:29~10:07 || All || 05:55~07:29 || 5~34 || [[:File:20170417_refcal_pha.png|Phase]] || [[:File:20170417_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 19:12:58.
|-
| 2017/04/26 || 08:06:52 || 3c273 || 02:50~09:28 || All || 07:21~08:57 || 5~34 || [[:File:20170426_refcal_pha.png|Phase]] || [[:File:20170426_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 04:37:28 and 11:51:26.
|-
| 2017/06/11 || 12:56:22 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170611_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170611_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/14 || 02:33:19 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170614_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170614_refcal_amp.png Amp] || No calibration for: Ant 8 Ant 12
|-
| 2017/06/14 || 13:01:19 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170614_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170614_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/15 || 13:05:48 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170615_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170615_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/16 || 13:05:48 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170616_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170616_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/20 || 13:06:26 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170620_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170620_refcal_amp.png Amp] || No calibration for: Ant 1 Ant 12
|-
| 2017/06/21 || 13:06:38 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170621_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170621_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/22 || 13:06:53 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170622_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170622_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/23 || 13:07:09 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170623_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170623_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/24 || 02:25:49 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170624_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170624_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/24 || 13:07:25 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170624_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170624_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/25 || 13:07:43 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170625_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170625_refcal_amp.png Amp] || No calibration for: Ant 10 Ant 12
|-
| 2017/06/26 || 13:15:47 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170626_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170626_refcal_amp.png Amp] || No calibration for: Ant 10 Ant 12
|-
| 2017/06/27 || 13:02:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170627_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170627_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/30 || 02:47:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170630_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170630_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/07/01 || 02:44:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170701_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170701_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/07/02 || 03:01:20 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170702_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170702_refcal_amp.png Amp] ||
|-
| 2017/07/03 || 02:47:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170703_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170703_refcal_amp.png Amp] || No calibration for: Ant 10
|-
| 2017/07/04 || 02:47:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170704_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170704_refcal_amp.png Amp] ||
|-
| 2017/07/05 || 02:55:19 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170705_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170705_refcal_amp.png Amp] ||
|-
| 2017/07/06 || 02:47:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170706_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170706_refcal_amp.png Amp] ||
|-
| 2017/07/07 || 13:12:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170707_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170707_refcal_amp.png Amp] ||
|-
| 2017/07/09 || 02:35:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170709_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170709_refcal_amp.png Amp] ||
|-
| 2017/07/09 || 13:16:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170709_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170709_refcal_amp.png Amp] ||
|-
| 2017/07/10 || 13:14:17 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170710_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170710_refcal_amp.png Amp] ||
|-
| 2017/07/11 || 13:14:18 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170711_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170711_refcal_amp.png Amp] ||
|-
| 2017/07/12 || 13:14:24 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170712_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170712_refcal_amp.png Amp] ||
|-
| 2017/07/13 || 13:14:59 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170713_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170713_refcal_amp.png Amp] ||
|-
| 2017/07/14 || 13:15:35 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170714_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170714_refcal_amp.png Amp] ||
|-
| 2017/07/16 || 02:48:33 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170716_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170716_refcal_amp.png Amp] ||
|-
| 2017/07/16 || 13:16:48 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170716_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170716_refcal_amp.png Amp] ||
|-
| 2017/07/17 || 13:14:54 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170717_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170717_refcal_amp.png Amp] ||
|-
| 2017/07/18 || 13:15:31 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170718_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170718_refcal_amp.png Amp] ||
|-
| 2017/07/19 || 13:16:16 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170719_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170719_refcal_amp.png Amp] ||
|-
| 2017/07/20 || 13:16:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170720_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170720_refcal_amp.png Amp] || No calibration for: Ant 10
|-
| 2017/07/21 || 13:20:57 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170721_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170721_refcal_amp.png Amp] ||
|-
| 2017/07/22 || 13:21:36 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170722_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170722_refcal_amp.png Amp] ||
|-
| 2017/07/23 || 13:34:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170723_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170723_refcal_amp.png Amp] ||
|-
| 2017/07/24 || 13:22:58 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170724_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170724_refcal_amp.png Amp] ||
|-
| 2017/07/25 || 13:23:38 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170725_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170725_refcal_amp.png Amp] ||
|-
| 2017/07/26 || 18:00:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170726_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170726_refcal_amp.png Amp] ||
|-
| 2017/07/28 || 02:42:36 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170728_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170728_refcal_amp.png Amp] ||
|-
| 2017/07/29 || 13:37:40 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170729_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170729_refcal_amp.png Amp] ||
|-
| 2017/07/31 || 13:27:05 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170731_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170731_refcal_amp.png Amp] ||
|-
| 2017/08/01 || 13:28:30 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170801_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170801_refcal_amp.png Amp] ||
|-
| 2017/08/02 || 13:29:13 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170802_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170802_refcal_amp.png Amp] ||
|-
| 2017/08/03 || 13:29:59 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170803_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170803_refcal_amp.png Amp] ||
|-
| 2017/08/05 || 02:35:58 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170805_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170805_refcal_amp.png Amp] ||
|-
| 2017/08/05 || 13:31:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170805_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170805_refcal_amp.png Amp] ||
|-
| 2017/08/06 || 13:32:06 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170806_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170806_refcal_amp.png Amp] ||
|-
| 2017/08/07 || 13:32:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170807_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170807_refcal_amp.png Amp] ||
|-
| 2017/08/08 || 13:33:33 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170808_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170808_refcal_amp.png Amp] ||
|-
| 2017/08/11 || 12:47:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170811_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170811_refcal_amp.png Amp] ||
|-
| 2017/08/12 || 12:43:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170812_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170812_refcal_amp.png Amp] || No calibration for: Ant 9
|-
| 2017/08/13 || 12:39:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170813_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170813_refcal_amp.png Amp] ||
|-
| 2017/08/14 || 12:34:19 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170814_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170814_refcal_amp.png Amp] ||
|-
| 2017/08/15 || 12:31:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170815_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170815_refcal_amp.png Amp] ||
|-
| 2017/08/16 || 12:27:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170816_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170816_refcal_amp.png Amp] ||
|-
| 2017/08/17 || 12:23:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170817_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170817_refcal_amp.png Amp] ||
|-
| 2017/08/18 || 12:19:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170818_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170818_refcal_amp.png Amp] ||
|-
| 2017/08/19 || 12:15:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170819_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170819_refcal_amp.png Amp] ||
|-
| 2017/08/21 || 12:07:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170821_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170821_refcal_amp.png Amp] ||
|-
| 2017/08/22 || 12:03:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170822_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170822_refcal_amp.png Amp] ||
|-
| 2017/08/23 || 12:14:51 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170823_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170823_refcal_amp.png Amp] ||
|-
| 2017/08/24 || 11:55:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170824_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170824_refcal_amp.png Amp] ||
|-
| 2017/08/25 || 14:01:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170825_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170825_refcal_amp.png Amp] ||
|-
| 2017/08/26 || 13:57:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170826_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170826_refcal_amp.png Amp] ||
|-
| 2017/08/28 || 01:03:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170828_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170828_refcal_amp.png Amp] ||
|-
| 2017/08/29 || 00:59:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170829_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170829_refcal_amp.png Amp] ||
|-
| 2017/08/29 || 13:49:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170829_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170829_refcal_amp.png Amp] ||
|-
| 2017/08/30 || 13:49:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170830_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170830_refcal_amp.png Amp] ||
|-
| 2017/08/31 || 13:50:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170831_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170831_refcal_amp.png Amp] ||
|-
| 2017/09/01 || 13:51:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170901_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170901_refcal_amp.png Amp] ||
|-
| 2017/09/02 || 13:52:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170902_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170902_refcal_amp.png Amp] ||
|-
| 2017/09/03 || 13:53:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170903_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170903_refcal_amp.png Amp] ||
|-
| 2017/09/04 || 13:54:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170904_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170904_refcal_amp.png Amp] ||
|-
| 2017/09/05 || 13:54:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170905_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170905_refcal_amp.png Amp] ||
|-
| 2017/09/06 || 13:55:58 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170906_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170906_refcal_amp.png Amp] ||
|-
| 2017/09/07 || 13:56:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170907_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170907_refcal_amp.png Amp] ||
|-
| 2017/09/08 || 13:56:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170908_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170908_refcal_amp.png Amp] ||
|-
| 2017/09/10 || 00:01:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170910_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170910_refcal_amp.png Amp] ||
|-
| 2017/09/10 || 13:57:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170910_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170910_refcal_amp.png Amp] ||
|-
| 2017/09/11 || 13:58:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170911_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170911_refcal_amp.png Amp] ||
|-
| 2017/09/12 || 14:00:11 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170912_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170912_refcal_amp.png Amp] ||
|-
| 2017/09/14 || 04:15:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170914_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170914_refcal_amp.png Amp] ||Refcal at around 14 UT is also good.
|-
| 2017/09/14 || 14:01:48 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170914_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170914_refcal_amp.png Amp] ||
|-
| 2017/09/15 || 14:39:27 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170915_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170915_refcal_amp.png Amp] ||
|-
| 2017/09/16 || 13:46:56 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170916_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170916_refcal_amp.png Amp] ||
|-
| 2017/09/17 || 13:47:46 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170917_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170917_refcal_amp.png Amp] ||
|-
| 2017/09/18 || 14:05:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170918_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170918_refcal_amp.png Amp] ||
|-
| 2017/09/19 || 14:06:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170919_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170919_refcal_amp.png Amp] ||
|-
| 2017/09/22 || 14:08:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170922_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170922_refcal_amp.png Amp] ||
|-
| 2017/09/23 || 14:09:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170923_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170923_refcal_amp.png Amp] ||
|-
| 2017/09/24 || 14:10:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170924_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170924_refcal_amp.png Amp] ||
|-
| 2017/09/25 || 14:17:33 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170925_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170925_refcal_amp.png Amp] ||
|-
| 2017/09/26 || 14:10:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170926_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170926_refcal_amp.png Amp] ||
|-
| 2017/09/27 || 14:06:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170927_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170927_refcal_amp.png Amp] ||
|-
| 2017/09/28 || 14:02:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170928_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170928_refcal_amp.png Amp] ||
|-
| 2017/09/29 || 14:01:20 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170929_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170929_refcal_amp.png Amp] ||
|-
| 2017/09/30 || 13:54:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170930_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170930_refcal_amp.png Amp] ||
|-
| 2017/10/01 || 13:50:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171001_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171001_refcal_amp.png Amp] ||
|-
| 2017/10/02 || 13:47:28 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171002_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171002_refcal_amp.png Amp] ||
|-
| 2017/10/03 || 13:43:25 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171003_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171003_refcal_amp.png Amp] ||
|-
| 2017/10/04 || 13:40:52 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171004_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171004_refcal_amp.png Amp] || No calibration for: Ant 10
|-
| 2017/10/06 || 02:42:39 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171006_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171006_refcal_amp.png Amp] ||
|-
| 2017/10/06 || 13:32:53 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171006_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171006_refcal_amp.png Amp] ||
|-
| 2017/10/07 || 13:30:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171007_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171007_refcal_amp.png Amp] ||
|-
| 2017/10/08 || 13:26:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171008_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171008_refcal_amp.png Amp] ||
|-
| 2017/10/10 || 02:31:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171010_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171010_refcal_amp.png Amp] ||
|-
| 2017/10/11 || 02:23:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171011_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171011_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/12 || 02:19:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171012_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171012_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/13 || 02:15:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171013_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171013_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/13 || 12:54:23 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171013_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171013_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/14 || 12:50:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171014_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171014_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/16 || 02:07:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171016_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171016_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/18 || 01:59:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171018_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171018_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/19 || 12:30:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171019_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171019_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/20 || 12:22:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171021_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171021_refcal_amp.png Amp] ||
|-
| 2017/10/21 || 12:22:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171021_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171021_refcal_amp.png Amp] ||
|-
| 2017/10/22 || 12:18:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171022_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171022_refcal_amp.png Amp] ||
|-
| 2017/10/24 || 12:10:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171024_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171024_refcal_amp.png Amp] || Few frequencies have unusually high amplitudes.
|-
| 2017/10/24 || 01:35:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171024_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171024_refcal_amp.png Amp] ||
|-
| 2017/10/25 || 01:31:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171025_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171025_refcal_amp.png Amp] ||
|-
| 2017/10/26 || 12:02:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171026_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171026_refcal_amp.png Amp] ||
|-
| 2017/10/27 || 11:58:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171027_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171027_refcal_amp.png Amp] ||
|-
| 2017/10/28 || 11:54:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171028_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171028_refcal_amp.png Amp] ||
|-
| 2017/10/29 || 11:50:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171029_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171029_refcal_amp.png Amp] || Ant 8 was down.
|-
| 2017/11/02 || 14:50:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171102_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171102_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/03 || 14:52:20 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171103_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171103_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/04 || 14:53:51 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171104_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171104_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/05 || 14:54:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171105_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171105_refcal_amp.png Amp] || Ant 3 was down. No calibration for: Ant 3
|-
| 2017/11/07 || 00:39:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171107_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171107_00_refcal_amp.png Amp] ||
|-
| 2017/11/07 || 14:56:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171107_14_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171107_14_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/08 || 14:57:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171108_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171108_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/09 || 14:58:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171109_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171109_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/10 || 15:00:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171110_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171110_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/12 || 00:22:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171112_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171112_00_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/12 || 15:02:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171112_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171112_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/15 || 00:12:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171115_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171115_00_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/15 || 15:07:00 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171115_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171115_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/16 || 15:08:14 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171116_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171116_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/17 || 15:09:29 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171117_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171117_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/19 || 00:13:26 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171119_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171119_00_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/19 || 15:11:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171119_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171119_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/21 || 00:11:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171121_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171121_00_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/22 || 00:10:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171122_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171122_00_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/22 || 15:15:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171122_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171122_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/23 || 15:16:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171123_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171123_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/24 || 15:18:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171124_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171124_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/25 || 15:19:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171125_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171125_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/26 || 15:20:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171126_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171126_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/12/03 || 00:05:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171203_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171203_00_refcal_amp.png Amp] ||
|-
| 2017/12/04 || 15:29:13 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171204_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171204_15_refcal_amp.png Amp] || No calibration on Ant 3 and 6
|-
| 2017/12/06 || 00:05:14 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171206_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171206_00_refcal_amp.png Amp] || First refcal on 2017-12-05 is bad. No Ant3 calibration.
|-
| 2017/12/07 || 00:05:06 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171207_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171207_00_refcal_amp.png Amp] || First refcal on 2017-12-06 had Windscram. No Ant3 calibration.
|-
| 2017/12/07 || 15:32:07 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171207_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171207_15_refcal_amp.png Amp] || No Ant 3 calibration.
|-
| 2017/12/08 || 15:33:05 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171208_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171208_15_refcal_amp.png Amp] || No Ant3 calibration.
|-
| 2017/12/13 || 15:37:19 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171213_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171213_15_refcal_amp.png Amp] ||
|-
| 2017/12/18 || 00:06:26 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171218_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171218_00_refcal_amp.png Amp] || No calibration for: Ant 4
|-
| 2017/12/18 || 15:40:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171218_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171218_15_refcal_amp.png Amp] || No calibration for: Ant 4 Ant 6
|-
| 2017/12/19 || 23:57:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171219_23_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171219_23_refcal_amp.png Amp] ||
|-
| 2017/12/22 || 15:27:55 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171222_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171222_15_refcal_amp.png Amp] ||
|-
| 2017/12/23 || 15:43:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171223_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171223_15_refcal_amp.png Amp] ||
|-
| 2017/12/24 || 15:42:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171224_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171224_15_refcal_amp.png Amp] ||
|-
| 2017/12/25 || 15:44:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171225_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171225_15_refcal_amp.png Amp] ||
|-
| 2017/12/27 || 00:10:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171227_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171227_00_refcal_amp.png Amp] ||
|-
| 2017/12/27 || 15:44:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171227_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171227_15_refcal_amp.png Amp] ||
|-
| 2017/12/28 || 15:44:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171228_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171228_15_refcal_amp.png Amp] ||
|-
| 2017/12/29 || 15:45:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171229_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171229_15_refcal_amp.png Amp] ||
|-
| 2017/12/30 || 15:44:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171230_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171230_15_refcal_amp.png Amp] ||
|-
| 2017/12/31 || 15:45:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171231_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171231_15_refcal_amp.png Amp] ||
|-
| 2018/01/01 || 15:45:32 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180101_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180101_15_refcal_amp.png Amp] || No calibration on Ant 6
|-
| 2018/01/02 || 15:45:32 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180102_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180102_15_refcal_amp.png Amp] ||
|-
| 2018/01/04 || 00:17:48 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180104_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180104_00_refcal_amp.png Amp] ||
|-
| 2018/01/04 || 15:45:31 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180104_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180104_15_refcal_amp.png Amp] ||
|-
| 2018/01/06 || 00:19:45 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180106_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180106_00_refcal_amp.png Amp] ||
|-
| 2018/01/07 || 15:45:08 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180107_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180107_15_refcal_amp.png Amp] ||
|-
| 2018/01/08 || 15:44:57 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180108_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180108_15_refcal_amp.png Amp] ||
|-
| 2018/01/10 || 00:23:57 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180110_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180110_00_refcal_amp.png Amp] ||
|-
| 2018/01/15 || 15:42:19 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180115_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180115_15_refcal_amp.png Amp] ||
|-
| 2018/01/16 || 15:41:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180116_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180116_15_refcal_amp.png Amp] ||
|-
| 2018/01/24 || 00:34:04 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180124_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180124_00_refcal_amp.png Amp] ||
|-
| 2018/02/13 || 01:04:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180213_01_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180213_01_refcal_amp.png Amp] ||
|-
| 2018/02/13 || 14:07:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180213_14_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180213_14_refcal_amp.png Amp] ||
|-
}

Reference Gain Calibration

2018-03-06T22:41:49Z

Nkuroda: /* Implementation in refcal_anal.py (2018-Mar-05) */

== Procedure for Analysis ==
Reference complex gain calibration refers to determining the "system" amplitude and phase with high precision as a function of IF band (i.e. integrated over each 500 MHz IF band). A typical reference calibration would cover 34 bands, 2 polarizations, and 13 antennas. The routines (on pipeline machine) to retrieve and analyze the data are in the module refcal_anal.py. Start from a time range during which the reference calibration observation occurred (check the [http://ovsa.njit.edu/phasecal/ phasecal results] to see which 1-hr scan had stable phases)

<pre>
import refcal_anal as ra
from util import Time
#example time range of the refcal scan that took place BEFORE the observation
trange=Time(['2017-04-08T14:00','2017-04-08T15:00'])
</pre>



Now read the data from that timerange
<pre>
out=ra.rd_refcal(trange)
</pre>
Note that there are optional arguments that can be given, such as projid='PHASECAL' (the default) and srcid='1229+060', but these are generally not needed.

To correct for differential feed rotation (for refcal data after 05:00 UT on 2017-Jul-01), you can use:
<pre>
out_corr = ra.unrot_refcal(out)
</pre>

Take a look at the phases (averaged over each band):
<pre>
ra.graph(out_corr)
</pre>
By default it displays only bands 5, 11, 17, 23 and polarization XX. To change the bands and polarization to display, use the "bandplt" and 'pol' parameters (better to check more bands).
<pre>
ra.graph(out_corr, bandplt=[5,13,19,25], pol=1)
</pre>



Observations within this time range will be used for averaging to get the reference phases/amplitudes. Data will be flagged if the SNR is less than minsnr, which can be supplied. The default minsnr is set to 1.0. We can further determine a finer selection of time range within this scan that has clean and stable phases if needed, by setting the new timerange in "trange" below.

<pre>
refcal=ra.refcal_anal(out_corr,timerange=trange,scanidx=[0])
</pre>

It will generate four plots. First and second are phases and amplitudes of the data similar as those produced by ra.graph(), but with the selected time range for averaging highlighted (one can use "bandplt" and "pol" to choose bands and polarization to display as well). The 3rd plot is the averaged phase vs. frequency and the 4th is the averaged amplitude vs. frequency. Those data will be our "analyzed" reference calibration data saved in the returned dictionary (named "refcal" here). The dictionary contains the actual complex values (refcal['refcal']), a flag array with the same shape (refcal['flag']), and some timestamps, e.g., refcal['t_mid'] is the middle of the time range used for averaging. Both refcal['refcal'] and refcal['flag'] have a shape of (15, 2, 34) -- which corresponds to # of antennas, # of polarizations, and # of bands.

If you determine some antenna, band, polarization need to be flagged/unflagged, they have to be manually changed in the returned refcal['flag'] array. In this example, Antenna 12 was not tracking, and the algorithm did not pick up all of them, so we have to do this manually -- setting refcal['flag'][11, :, :]=1

<pre>
refcal['flag'][11]=1
</pre>

If satisfied with the results (by looking at the plots), we can go ahead and send them to the SQL database
<pre>
import cal_header as ch
ch.refcal2sql(refcal)
</pre>

To retrieve the refcal data back from SQL database based on, e.g., a solar data one wish to calibrate. We can provide a time:
<pre>
t=Time('2017-04-07T19:40')
refcal=ra.sql2refcal(t)
</pre>
The resulted refcal have three keys: 'amp' (15 x 2 x 34 array), 'pha' (15 x 2 x 34 array), and 'timestamp' (in jd). The refcal data found will be the closest one PRIOR to the supplied observation time.

== Updating the Reference Calibrations Table ==
The table below lists the known good reference calibrations. To facilitate adding entries to this table, do the following, where the time is after the desired refcal, but before any later refcal:
<pre>
t=Time('2017-06-23T19:40') # retrieves the refcal at 13:07 UT on that day
refcal=ra.sql2refcal(t)
ra.graph_results(refcal, savefigs=True)
</pre>
This will create summary plots of the amplitude and phase, will write the two corresponding *.png files into the /common/webplots/refcal folder, and will print as a text string the lines needed to add an entry. Just cut from the terminal and paste into the wiki editor at the appropriate place to preserve time order.

== Getting Band 4 Phase (2017-Dec-24) ==
[[File: Band4_phase_diff.png | thumb | 600px | '''Figure 1:''' LoRX - HiRX phase differences 2017-12-24. The blue points are the phase differences for common frequencies between pcal_lo_all.fsq and pcal_hi_all.fsq, for parallel feeds (XX and YY), and the orange points are the same for the crossed feeds (XY and YX). Note that the XX and XY points are identical (except at high frequencies where noise is greater), while the YY and YX points differ by what looks like a frequency-independent constant. The green curves are quadratic fits to the blue points. The phase differences, and their fits, are nearly identical on each of the 13 antennas, which was not necessarily expected. Most of the slope here is a delay difference of about 5.9 ns.]]

Because the refcals have up to now been done with the high-frequency receiver (HiRX) on Antenna 14, we are only measuring the reference phase on bands 5-34, even though band 4 has been present in the solar data. However, the shape of the phase vs. frequency is very regular, suggesting that if we know this shape (which could change over time, so it should be remeasured from time to time) then we can predict the Band 4 phase based on the phases of the higher bands.

To do this, we measure the phase differences between the low-frequency receiver (LoRX) and HiRx for those frequencies that are in common. It happens that there are many frequencies in common, since the LoRX covers 1-6 GHz and the HiRX covers 3-18 GHz. In fact, the pcal_lo_all.fsq frequency sequence measures bands 1-12 (1-7 GHz) and the phases seem to be coherent from 6-7 GHz. This provides 38 frequencies in common between LoRX and HiRX, from which to determine the phase differences.

The procedure, then, is to measure the LoRX and HiRX phases near the meridian passage of a strong calibrator (so that all of the feeds are approximately parallel and no feed-rotation-correction is needed). We first observe the source with the LoRX receiver using pcal_lo_all.fsq, and then observe the source with the HiRX receiver using pcal_hi_all.fsq. This is part of another procedure where we then rotate the Ant 14 feed by 90 degrees so that it is crossed with respect to the others. It seems that the XX and YY phases of the parallel feeds should be the same as the XY and YX phases of the crossed feeds, and therefore we should get the same phase differences in the two cases.
Here is an example of obtaining the phases of such observations and plotting the phase differences, with corresponding parabolic fits:

npzfiles = ['/common/webplots/phasecal/20171224131548_1229+020.npz','/common/webplots/phasecal/20171224135049_1229+020.npz',
'/common/webplots/phasecal/20171224142048_1229+020.npz','/common/webplots/phasecal/20171224145148_1229+020.npz'] # LoRX, HiRX, HiRX, LoRX
import read_idb as ri
import numpy as np
import matplotlib.pylab as plt
from util import common_val_idx, lobe
outlo1 = ri.read_npz([npzfiles[0]]) # Parallel feed LoRX
outhi1 = ri.read_npz([npzfiles[1]]) # Parallel feed HiRX
outhi2 = ri.read_npz([npzfiles[2]]) # Crossed feed HiRX
outlo2 = ri.read_npz([npzfiles[3]]) # Crossed feed LoRX
phlo1 = np.angle(np.sum(outlo1['x'][ri.bl2ord[13,0:13]],3)) # Parallel LoRX phases averaged over time
phhi1 = np.angle(np.sum(outhi1['x'][ri.bl2ord[13,0:13]],3)) # Parallel HiRx phases averaged over time
phlo2 = np.angle(np.sum(outlo2['x'][ri.bl2ord[13,0:13]],3)) # Crossed LoRX phases averaged over time
phhi2 = np.angle(np.sum(outhi2['x'][ri.bl2ord[13,0:13]],3)) # Crossed HiRx phases averaged over time
idx1,idx2 = common_val_idx(outlo1['fghz'],outhi1['fghz']) # Find common frequency indexes
pdif1 = np.unwrap(lobe(phlo1[:,:,idx1] - phhi1[:,:,idx2])) # Parallel phase differences at common frequencies
pdif2 = np.unwrap(lobe(phlo2[:,:,idx1] - phhi2[:,:,idx2])) # Crossed phase differences
fcom = outlo1['fghz'][idx1] # Common frequencies
band4_fghz = outlo1['fghz'][23:31] # Band 4 frequencies
ps = []
f, ax = plt.subplots(2,13)
for i in range(13):
for j in range(2):
ax[j,i].cla()
ax[j,i].plot(fcom,pdif1[i,j],'.') # Plot parallel XX, YY phase differences
ax[j,i].plot(fcom,pdif2[i,j+2],'.') # Plot crossed XY, YX phase differences
ax[j,i].set_ylim(-1,11)
ps.append(np.polyfit(fcom,pdif1[i,j],2))
ax[j,i].plot(fcom,np.polyval(ps[-1],fcom),'-')

The resulting plot is shown in '''Figure 1''' above. Curiously, the XX and YY phase differences (blue points) differ by about -0.5 radians, while the XX and YX phase differences (blue in top row vs. orange in bottom row) differ by +0.5 radians. Meanwhile, the XX and XY phase differences are essentially identical. This relates to the X vs. Y delays in some manner that has yet to be understood.

The phase differences can be extrapolated to the band4 phases by
for p in np.array(ps)[::2]:
print ('{:8.2f}'*8).format(*np.polyval(p,band4_fghz))

for p in np.array(ps)[1::2]:
print ('{:8.2f}'*8).format(*np.polyval(p,band4_fghz))
which results in the following tables (I put the headings in by hand):

XX Phase Differences for Band 4
2.87 2.89 2.90 2.92 2.94 2.96 2.97 3.00
------ ------ ------ ------ ------ ------ ------ ------
1 -0.596 -0.562 -0.528 -0.494 -0.460 -0.426 -0.392 -0.358
2 -0.574 -0.541 -0.508 -0.475 -0.442 -0.408 -0.375 -0.341
3 -0.567 -0.535 -0.502 -0.469 -0.436 -0.403 -0.370 -0.337
4 -0.617 -0.583 -0.549 -0.514 -0.479 -0.444 -0.409 -0.374
5 -0.664 -0.629 -0.594 -0.559 -0.523 -0.488 -0.452 -0.416
6 -0.653 -0.619 -0.584 -0.549 -0.514 -0.479 -0.444 -0.409
7 -0.593 -0.558 -0.524 -0.489 -0.454 -0.419 -0.384 -0.349
8 -0.565 -0.532 -0.499 -0.466 -0.433 -0.399 -0.366 -0.332
9 -0.720 -0.686 -0.651 -0.617 -0.582 -0.548 -0.513 -0.478
10 -0.542 -0.510 -0.478 -0.446 -0.413 -0.381 -0.348 -0.315
11 -0.660 -0.626 -0.591 -0.557 -0.522 -0.487 -0.452 -0.417
12 -0.521 -0.490 -0.460 -0.429 -0.397 -0.366 -0.335 -0.303
13 -0.793 -0.753 -0.714 -0.674 -0.634 -0.595 -0.555 -0.515

YY Phase Differences for Band 4
2.87 2.89 2.90 2.92 2.94 2.96 2.97 3.00
------ ------ ------ ------ ------ ------ ------ ------
1 -1.016 -0.980 -0.944 -0.909 -0.873 -0.837 -0.801 -0.765
2 -0.988 -0.952 -0.916 -0.880 -0.844 -0.808 -0.772 -0.736
3 -1.012 -0.977 -0.942 -0.906 -0.871 -0.836 -0.800 -0.765
4 -1.008 -0.973 -0.939 -0.904 -0.869 -0.834 -0.799 -0.764
5 -1.065 -1.027 -0.990 -0.953 -0.916 -0.878 -0.841 -0.803
6 -0.924 -0.890 -0.856 -0.823 -0.789 -0.755 -0.721 -0.687
7 -0.584 -0.561 -0.538 -0.515 -0.492 -0.468 -0.444 -0.420
8 -1.038 -1.003 -0.967 -0.931 -0.895 -0.859 -0.823 -0.787
9 -1.079 -1.045 -1.010 -0.975 -0.939 -0.904 -0.869 -0.834
10 -1.155 -1.117 -1.079 -1.041 -1.003 -0.964 -0.926 -0.888
11 -1.046 -1.010 -0.975 -0.939 -0.903 -0.867 -0.831 -0.795
12 -0.781 -0.750 -0.719 -0.688 -0.657 -0.625 -0.594 -0.562
13 -1.163 -1.123 -1.082 -1.042 -1.001 -0.960 -0.919 -0.879

== Implementation in refcal_anal.py (2018-Mar-05) ==
[[File: delay_curve.png | thumb | 600px | '''Figure 2:''' The band-averaged phase differences in high-frequency bands between 2018-02-05 and 2018-02-07 (reference day). The orange line is a linear fit to the points, forced to pass through (0,0). The green points are the fit values for band 4, which are used to estimate this day's (2018-02-05) band 4 phases. Note that the scatter in ant 6 was because it was not tracking that day.]]
The refcal_anal.py routine has been updated to include the band-averaged band 4 phase calibration. This implementation has the following two components.

:'''1.''' On the day we take the measurements with the above-mentioned LoRX-HiRX observation sequence: It calculates the phase differences between low-frequency and high-frequency measurements over bands 5 - 10, extrapolate it to band 4, and subtract this extrapolated difference from the actual band 4 phases measured by low-frequency receiver to obtain the "reference band 4 phases" as if they were measured by high-frequency receiver. This have to be saved in the SQL database with the special keyword '''lohi=True'''.

:'''2.''' On regular days when we do NOT take measurements with LoRX: It calculates the "estimated band 4 phases" using the closest earlier reference band 4 phases calculated in step #1. First, it calculates the phase differences in high-frequency bands between the target day and the reference day (a "delay curve"). This should be fit with a linear curve passing through zeros like in '''Figure 2'''. We use this fit to obtain the phase difference in band 4 between the target day and the reference day. Knowing the "reference band 4 phases" from #1, we estimate the band 4 phases on arbitrary day.

To do the first task of saving reference refcal, follow the example lines of code below (in pipeline):

from util import Time
import refcal_anal as ra
trange = Time(['2018-03-06T09:30','2018-03-06T10:30']) #has to contain LoRX and HiRX scans
out = ra.rd_refcal(trange)
out_corr = ra.unrot_refcal(out)
refcal = ra.refcal_anal(out_corr, timerange=Time(['2018-03-06 09:30','2018-03-06 10:00']), lohi=True) #timerange has to specify '''only HiRX scan'''
import cal_header as ch
ch.refcal2sql(refcal, lohi=True) #save to SQL

The last plot created will have the calculated band 4 phases added to the usual refcal phase summary plot. There is no special keyword needed for the second task - the routine now automatically calculates the estimated band 4 phases for every refcal, and produces a new plot showing the delay curve like Figure 2, calculated with respect to the most recent reference refcal. If this delay curve starts to show large scatters, it is likely that we need a new LoHi scan to obtain the new reference refcal. It is also important to note that the new reference refcal is needed '''after every delay center reset''', since resetting the delay center introduces some offsets in delay curves and therefore causes the band 4 estimation algorithm to fail.

The estimated band 4 phase errors from this algorithm is currently ~20 degrees. We also would like to eventually obtain the phases at every frequencies instead of band-averaged values.

=== List of Saved Reference Refcals ===

2017-12-24 14:06:50.000
2018-02-07 11:00:48.000
2018-02-22 10:46:51.000
2018-03-06 09:46:48.000

== List of Analyzed Reference Calibrations ==

{| class="wikitable" style="text-align: center; width: 800px; height: 200px;"
|-
| Date || Timestamp || Source || Obs Trange || Scan Idx || Avg Trange || Bands || Phase Plot || Amp Plot || Comments
|-
| 2017/04/02 || 06:36:50 || 3c273 || 04:20~11:00 || All || 05:47~07:26 || 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 || [[:File:20170402_refcal_pha.png|Phase]] || [[:File:20170402_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 11:38:17.
|-
| 2017/04/04 || 09:32:50 || 3c273 || 04:43~10:57 || All || 08:46~10:19 || 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 || [[:File:20170404_refcal_pha.png|Phase]] || [[:File:20170404_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 16:43:51.
|-
| 2017/04/05 ||06:44:10 || 3c273 || 04:17~10:30 || All || 04:27~09:34 || 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 || [[:File:20170405_refcal_pha.png|Phase]] || [[:File:20170405_refcal_amp.png|Amp]] || Ant 12 was not tracking.
|-
| 2017/04/06 || 09:54:50|| 3c273 || 04:14~10:49 || All || 05:39~08:11 || 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 || [[:File:20170406_refcal_pha.png|Phase]] || [[:File:20170406_refcal_amp.png|Amp]] || Ant 12 was not tracking.
|-
| 2017/04/07 || 08:30:51|| 3c273 || 04:00~10:30 || 1, 3, 5, 7, 9, 11, 13, 15, 17 || 07:53~09:10 || 5~34 || [[:File:20170407_refcal_pha.png|Phase]] || [[:File:20170407_refcal_amp.png|Amp]] || Ant 12 was not tracking.
|-
| 2017/04/08 || 06:14:51 || 3c273 || 05:00~10:30 || 1, 3, 5, 7, 9, 11, 13 || 05:00~07:00 || 5~34 || [[:File:20170408_refcal_pha.png|Phase]] || [[:File:20170408_refcal_amp.png|Amp]] || Ant 12 was not tracking. Ant 13 not working. Delay center change at 2017-04-08T03:12:26. Another refcal record is added at 2017-04-09T06:14:45.
|-
| 2017/04/10 || 06:57:10 || 3c273 || 04:30~10:30 || 2, 6, 8 || || 5~34 || [[:File:20170410_refcal_pha.png|Phase]] || [[:File:20170410_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 2017-04-08 13:20:39.
|-
| 2017/04/13 || 13:48:39 || 2136+006 || || 0 || || 5~23 || [http://ovsa.njit.edu/refcal/20170413_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170413_refcal_amp.png Amp] ||
|-
| 2017/04/16 || 06:36:48 || 3c273 || 03:00~11:00 || || 05:55~07:20 || 5~34 || [[:File:20170416_refcal_pha.png|Phase]] || [[:File:20170416_refcal_amp.png|Amp]] || Ant 12 was not tracking.
|-
| 2017/04/17 || 06:41:51 || 3c273 || 03:29~10:07 || All || 05:55~07:29 || 5~34 || [[:File:20170417_refcal_pha.png|Phase]] || [[:File:20170417_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 19:12:58.
|-
| 2017/04/26 || 08:06:52 || 3c273 || 02:50~09:28 || All || 07:21~08:57 || 5~34 || [[:File:20170426_refcal_pha.png|Phase]] || [[:File:20170426_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 04:37:28 and 11:51:26.
|-
| 2017/06/11 || 12:56:22 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170611_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170611_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/14 || 02:33:19 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170614_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170614_refcal_amp.png Amp] || No calibration for: Ant 8 Ant 12
|-
| 2017/06/14 || 13:01:19 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170614_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170614_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/15 || 13:05:48 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170615_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170615_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/16 || 13:05:48 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170616_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170616_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/20 || 13:06:26 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170620_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170620_refcal_amp.png Amp] || No calibration for: Ant 1 Ant 12
|-
| 2017/06/21 || 13:06:38 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170621_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170621_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/22 || 13:06:53 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170622_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170622_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/23 || 13:07:09 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170623_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170623_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/24 || 02:25:49 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170624_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170624_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/24 || 13:07:25 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170624_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170624_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/25 || 13:07:43 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170625_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170625_refcal_amp.png Amp] || No calibration for: Ant 10 Ant 12
|-
| 2017/06/26 || 13:15:47 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170626_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170626_refcal_amp.png Amp] || No calibration for: Ant 10 Ant 12
|-
| 2017/06/27 || 13:02:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170627_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170627_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/30 || 02:47:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170630_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170630_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/07/01 || 02:44:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170701_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170701_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/07/02 || 03:01:20 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170702_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170702_refcal_amp.png Amp] ||
|-
| 2017/07/03 || 02:47:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170703_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170703_refcal_amp.png Amp] || No calibration for: Ant 10
|-
| 2017/07/04 || 02:47:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170704_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170704_refcal_amp.png Amp] ||
|-
| 2017/07/05 || 02:55:19 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170705_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170705_refcal_amp.png Amp] ||
|-
| 2017/07/06 || 02:47:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170706_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170706_refcal_amp.png Amp] ||
|-
| 2017/07/07 || 13:12:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170707_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170707_refcal_amp.png Amp] ||
|-
| 2017/07/09 || 02:35:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170709_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170709_refcal_amp.png Amp] ||
|-
| 2017/07/09 || 13:16:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170709_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170709_refcal_amp.png Amp] ||
|-
| 2017/07/10 || 13:14:17 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170710_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170710_refcal_amp.png Amp] ||
|-
| 2017/07/11 || 13:14:18 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170711_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170711_refcal_amp.png Amp] ||
|-
| 2017/07/12 || 13:14:24 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170712_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170712_refcal_amp.png Amp] ||
|-
| 2017/07/13 || 13:14:59 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170713_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170713_refcal_amp.png Amp] ||
|-
| 2017/07/14 || 13:15:35 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170714_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170714_refcal_amp.png Amp] ||
|-
| 2017/07/16 || 02:48:33 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170716_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170716_refcal_amp.png Amp] ||
|-
| 2017/07/16 || 13:16:48 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170716_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170716_refcal_amp.png Amp] ||
|-
| 2017/07/17 || 13:14:54 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170717_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170717_refcal_amp.png Amp] ||
|-
| 2017/07/18 || 13:15:31 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170718_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170718_refcal_amp.png Amp] ||
|-
| 2017/07/19 || 13:16:16 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170719_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170719_refcal_amp.png Amp] ||
|-
| 2017/07/20 || 13:16:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170720_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170720_refcal_amp.png Amp] || No calibration for: Ant 10
|-
| 2017/07/21 || 13:20:57 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170721_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170721_refcal_amp.png Amp] ||
|-
| 2017/07/22 || 13:21:36 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170722_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170722_refcal_amp.png Amp] ||
|-
| 2017/07/23 || 13:34:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170723_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170723_refcal_amp.png Amp] ||
|-
| 2017/07/24 || 13:22:58 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170724_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170724_refcal_amp.png Amp] ||
|-
| 2017/07/25 || 13:23:38 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170725_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170725_refcal_amp.png Amp] ||
|-
| 2017/07/26 || 18:00:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170726_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170726_refcal_amp.png Amp] ||
|-
| 2017/07/28 || 02:42:36 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170728_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170728_refcal_amp.png Amp] ||
|-
| 2017/07/29 || 13:37:40 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170729_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170729_refcal_amp.png Amp] ||
|-
| 2017/07/31 || 13:27:05 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170731_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170731_refcal_amp.png Amp] ||
|-
| 2017/08/01 || 13:28:30 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170801_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170801_refcal_amp.png Amp] ||
|-
| 2017/08/02 || 13:29:13 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170802_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170802_refcal_amp.png Amp] ||
|-
| 2017/08/03 || 13:29:59 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170803_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170803_refcal_amp.png Amp] ||
|-
| 2017/08/05 || 02:35:58 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170805_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170805_refcal_amp.png Amp] ||
|-
| 2017/08/05 || 13:31:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170805_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170805_refcal_amp.png Amp] ||
|-
| 2017/08/06 || 13:32:06 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170806_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170806_refcal_amp.png Amp] ||
|-
| 2017/08/07 || 13:32:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170807_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170807_refcal_amp.png Amp] ||
|-
| 2017/08/08 || 13:33:33 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170808_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170808_refcal_amp.png Amp] ||
|-
| 2017/08/11 || 12:47:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170811_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170811_refcal_amp.png Amp] ||
|-
| 2017/08/12 || 12:43:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170812_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170812_refcal_amp.png Amp] || No calibration for: Ant 9
|-
| 2017/08/13 || 12:39:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170813_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170813_refcal_amp.png Amp] ||
|-
| 2017/08/14 || 12:34:19 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170814_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170814_refcal_amp.png Amp] ||
|-
| 2017/08/15 || 12:31:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170815_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170815_refcal_amp.png Amp] ||
|-
| 2017/08/16 || 12:27:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170816_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170816_refcal_amp.png Amp] ||
|-
| 2017/08/17 || 12:23:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170817_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170817_refcal_amp.png Amp] ||
|-
| 2017/08/18 || 12:19:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170818_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170818_refcal_amp.png Amp] ||
|-
| 2017/08/19 || 12:15:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170819_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170819_refcal_amp.png Amp] ||
|-
| 2017/08/21 || 12:07:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170821_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170821_refcal_amp.png Amp] ||
|-
| 2017/08/22 || 12:03:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170822_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170822_refcal_amp.png Amp] ||
|-
| 2017/08/23 || 12:14:51 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170823_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170823_refcal_amp.png Amp] ||
|-
| 2017/08/24 || 11:55:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170824_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170824_refcal_amp.png Amp] ||
|-
| 2017/08/25 || 14:01:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170825_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170825_refcal_amp.png Amp] ||
|-
| 2017/08/26 || 13:57:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170826_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170826_refcal_amp.png Amp] ||
|-
| 2017/08/28 || 01:03:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170828_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170828_refcal_amp.png Amp] ||
|-
| 2017/08/29 || 00:59:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170829_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170829_refcal_amp.png Amp] ||
|-
| 2017/08/29 || 13:49:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170829_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170829_refcal_amp.png Amp] ||
|-
| 2017/08/30 || 13:49:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170830_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170830_refcal_amp.png Amp] ||
|-
| 2017/08/31 || 13:50:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170831_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170831_refcal_amp.png Amp] ||
|-
| 2017/09/01 || 13:51:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170901_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170901_refcal_amp.png Amp] ||
|-
| 2017/09/02 || 13:52:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170902_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170902_refcal_amp.png Amp] ||
|-
| 2017/09/03 || 13:53:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170903_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170903_refcal_amp.png Amp] ||
|-
| 2017/09/04 || 13:54:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170904_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170904_refcal_amp.png Amp] ||
|-
| 2017/09/05 || 13:54:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170905_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170905_refcal_amp.png Amp] ||
|-
| 2017/09/06 || 13:55:58 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170906_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170906_refcal_amp.png Amp] ||
|-
| 2017/09/07 || 13:56:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170907_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170907_refcal_amp.png Amp] ||
|-
| 2017/09/08 || 13:56:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170908_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170908_refcal_amp.png Amp] ||
|-
| 2017/09/10 || 00:01:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170910_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170910_refcal_amp.png Amp] ||
|-
| 2017/09/10 || 13:57:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170910_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170910_refcal_amp.png Amp] ||
|-
| 2017/09/11 || 13:58:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170911_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170911_refcal_amp.png Amp] ||
|-
| 2017/09/12 || 14:00:11 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170912_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170912_refcal_amp.png Amp] ||
|-
| 2017/09/14 || 04:15:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170914_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170914_refcal_amp.png Amp] ||Refcal at around 14 UT is also good.
|-
| 2017/09/14 || 14:01:48 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170914_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170914_refcal_amp.png Amp] ||
|-
| 2017/09/15 || 14:39:27 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170915_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170915_refcal_amp.png Amp] ||
|-
| 2017/09/16 || 13:46:56 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170916_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170916_refcal_amp.png Amp] ||
|-
| 2017/09/17 || 13:47:46 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170917_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170917_refcal_amp.png Amp] ||
|-
| 2017/09/18 || 14:05:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170918_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170918_refcal_amp.png Amp] ||
|-
| 2017/09/19 || 14:06:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170919_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170919_refcal_amp.png Amp] ||
|-
| 2017/09/22 || 14:08:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170922_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170922_refcal_amp.png Amp] ||
|-
| 2017/09/23 || 14:09:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170923_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170923_refcal_amp.png Amp] ||
|-
| 2017/09/24 || 14:10:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170924_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170924_refcal_amp.png Amp] ||
|-
| 2017/09/25 || 14:17:33 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170925_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170925_refcal_amp.png Amp] ||
|-
| 2017/09/26 || 14:10:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170926_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170926_refcal_amp.png Amp] ||
|-
| 2017/09/27 || 14:06:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170927_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170927_refcal_amp.png Amp] ||
|-
| 2017/09/28 || 14:02:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170928_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170928_refcal_amp.png Amp] ||
|-
| 2017/09/29 || 14:01:20 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170929_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170929_refcal_amp.png Amp] ||
|-
| 2017/09/30 || 13:54:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170930_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170930_refcal_amp.png Amp] ||
|-
| 2017/10/01 || 13:50:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171001_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171001_refcal_amp.png Amp] ||
|-
| 2017/10/02 || 13:47:28 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171002_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171002_refcal_amp.png Amp] ||
|-
| 2017/10/03 || 13:43:25 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171003_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171003_refcal_amp.png Amp] ||
|-
| 2017/10/04 || 13:40:52 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171004_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171004_refcal_amp.png Amp] || No calibration for: Ant 10
|-
| 2017/10/06 || 02:42:39 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171006_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171006_refcal_amp.png Amp] ||
|-
| 2017/10/06 || 13:32:53 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171006_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171006_refcal_amp.png Amp] ||
|-
| 2017/10/07 || 13:30:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171007_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171007_refcal_amp.png Amp] ||
|-
| 2017/10/08 || 13:26:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171008_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171008_refcal_amp.png Amp] ||
|-
| 2017/10/10 || 02:31:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171010_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171010_refcal_amp.png Amp] ||
|-
| 2017/10/11 || 02:23:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171011_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171011_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/12 || 02:19:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171012_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171012_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/13 || 02:15:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171013_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171013_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/13 || 12:54:23 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171013_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171013_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/14 || 12:50:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171014_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171014_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/16 || 02:07:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171016_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171016_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/18 || 01:59:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171018_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171018_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/19 || 12:30:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171019_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171019_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/20 || 12:22:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171021_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171021_refcal_amp.png Amp] ||
|-
| 2017/10/21 || 12:22:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171021_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171021_refcal_amp.png Amp] ||
|-
| 2017/10/22 || 12:18:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171022_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171022_refcal_amp.png Amp] ||
|-
| 2017/10/24 || 12:10:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171024_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171024_refcal_amp.png Amp] || Few frequencies have unusually high amplitudes.
|-
| 2017/10/24 || 01:35:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171024_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171024_refcal_amp.png Amp] ||
|-
| 2017/10/25 || 01:31:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171025_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171025_refcal_amp.png Amp] ||
|-
| 2017/10/26 || 12:02:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171026_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171026_refcal_amp.png Amp] ||
|-
| 2017/10/27 || 11:58:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171027_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171027_refcal_amp.png Amp] ||
|-
| 2017/10/28 || 11:54:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171028_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171028_refcal_amp.png Amp] ||
|-
| 2017/10/29 || 11:50:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171029_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171029_refcal_amp.png Amp] || Ant 8 was down.
|-
| 2017/11/02 || 14:50:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171102_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171102_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/03 || 14:52:20 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171103_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171103_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/04 || 14:53:51 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171104_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171104_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/05 || 14:54:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171105_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171105_refcal_amp.png Amp] || Ant 3 was down. No calibration for: Ant 3
|-
| 2017/11/07 || 00:39:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171107_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171107_00_refcal_amp.png Amp] ||
|-
| 2017/11/07 || 14:56:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171107_14_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171107_14_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/08 || 14:57:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171108_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171108_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/09 || 14:58:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171109_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171109_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/10 || 15:00:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171110_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171110_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/12 || 00:22:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171112_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171112_00_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/12 || 15:02:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171112_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171112_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/15 || 00:12:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171115_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171115_00_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/15 || 15:07:00 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171115_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171115_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/16 || 15:08:14 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171116_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171116_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/17 || 15:09:29 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171117_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171117_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/19 || 00:13:26 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171119_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171119_00_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/19 || 15:11:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171119_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171119_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/21 || 00:11:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171121_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171121_00_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/22 || 00:10:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171122_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171122_00_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/22 || 15:15:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171122_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171122_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/23 || 15:16:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171123_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171123_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/24 || 15:18:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171124_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171124_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/25 || 15:19:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171125_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171125_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/26 || 15:20:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171126_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171126_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/12/03 || 00:05:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171203_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171203_00_refcal_amp.png Amp] ||
|-
| 2017/12/04 || 15:29:13 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171204_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171204_15_refcal_amp.png Amp] || No calibration on Ant 3 and 6
|-
| 2017/12/06 || 00:05:14 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171206_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171206_00_refcal_amp.png Amp] || First refcal on 2017-12-05 is bad. No Ant3 calibration.
|-
| 2017/12/07 || 00:05:06 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171207_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171207_00_refcal_amp.png Amp] || First refcal on 2017-12-06 had Windscram. No Ant3 calibration.
|-
| 2017/12/07 || 15:32:07 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171207_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171207_15_refcal_amp.png Amp] || No Ant 3 calibration.
|-
| 2017/12/08 || 15:33:05 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171208_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171208_15_refcal_amp.png Amp] || No Ant3 calibration.
|-
| 2017/12/13 || 15:37:19 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171213_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171213_15_refcal_amp.png Amp] ||
|-
| 2017/12/18 || 00:06:26 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171218_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171218_00_refcal_amp.png Amp] || No calibration for: Ant 4
|-
| 2017/12/18 || 15:40:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171218_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171218_15_refcal_amp.png Amp] || No calibration for: Ant 4 Ant 6
|-
| 2017/12/19 || 23:57:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171219_23_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171219_23_refcal_amp.png Amp] ||
|-
| 2017/12/22 || 15:27:55 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171222_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171222_15_refcal_amp.png Amp] ||
|-
| 2017/12/23 || 15:43:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171223_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171223_15_refcal_amp.png Amp] ||
|-
| 2017/12/24 || 15:42:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171224_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171224_15_refcal_amp.png Amp] ||
|-
| 2017/12/25 || 15:44:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171225_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171225_15_refcal_amp.png Amp] ||
|-
| 2017/12/27 || 00:10:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171227_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171227_00_refcal_amp.png Amp] ||
|-
| 2017/12/27 || 15:44:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171227_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171227_15_refcal_amp.png Amp] ||
|-
| 2017/12/28 || 15:44:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171228_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171228_15_refcal_amp.png Amp] ||
|-
| 2017/12/29 || 15:45:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171229_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171229_15_refcal_amp.png Amp] ||
|-
| 2017/12/30 || 15:44:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171230_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171230_15_refcal_amp.png Amp] ||
|-
| 2017/12/31 || 15:45:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171231_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171231_15_refcal_amp.png Amp] ||
|-
| 2018/01/01 || 15:45:32 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180101_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180101_15_refcal_amp.png Amp] || No calibration on Ant 6
|-
| 2018/01/02 || 15:45:32 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180102_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180102_15_refcal_amp.png Amp] ||
|-
| 2018/01/04 || 00:17:48 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180104_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180104_00_refcal_amp.png Amp] ||
|-
| 2018/01/04 || 15:45:31 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180104_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180104_15_refcal_amp.png Amp] ||
|-
| 2018/01/06 || 00:19:45 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180106_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180106_00_refcal_amp.png Amp] ||
|-
| 2018/01/07 || 15:45:08 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180107_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180107_15_refcal_amp.png Amp] ||
|-
| 2018/01/08 || 15:44:57 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180108_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180108_15_refcal_amp.png Amp] ||
|-
| 2018/01/10 || 00:23:57 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180110_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180110_00_refcal_amp.png Amp] ||
|-
| 2018/01/15 || 15:42:19 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180115_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180115_15_refcal_amp.png Amp] ||
|-
| 2018/01/16 || 15:41:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180116_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180116_15_refcal_amp.png Amp] ||
|-
| 2018/01/24 || 00:34:04 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180124_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180124_00_refcal_amp.png Amp] ||
|-
| 2018/02/13 || 01:04:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180213_01_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180213_01_refcal_amp.png Amp] ||
|-
| 2018/02/13 || 14:07:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180213_14_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180213_14_refcal_amp.png Amp] ||
|-
}

Reference Gain Calibration

2018-03-06T22:37:07Z

Nkuroda: /* Getting Band 4 Phase (2017-Dec-24) */

== Procedure for Analysis ==
Reference complex gain calibration refers to determining the "system" amplitude and phase with high precision as a function of IF band (i.e. integrated over each 500 MHz IF band). A typical reference calibration would cover 34 bands, 2 polarizations, and 13 antennas. The routines (on pipeline machine) to retrieve and analyze the data are in the module refcal_anal.py. Start from a time range during which the reference calibration observation occurred (check the [http://ovsa.njit.edu/phasecal/ phasecal results] to see which 1-hr scan had stable phases)

<pre>
import refcal_anal as ra
from util import Time
#example time range of the refcal scan that took place BEFORE the observation
trange=Time(['2017-04-08T14:00','2017-04-08T15:00'])
</pre>



Now read the data from that timerange
<pre>
out=ra.rd_refcal(trange)
</pre>
Note that there are optional arguments that can be given, such as projid='PHASECAL' (the default) and srcid='1229+060', but these are generally not needed.

To correct for differential feed rotation (for refcal data after 05:00 UT on 2017-Jul-01), you can use:
<pre>
out_corr = ra.unrot_refcal(out)
</pre>

Take a look at the phases (averaged over each band):
<pre>
ra.graph(out_corr)
</pre>
By default it displays only bands 5, 11, 17, 23 and polarization XX. To change the bands and polarization to display, use the "bandplt" and 'pol' parameters (better to check more bands).
<pre>
ra.graph(out_corr, bandplt=[5,13,19,25], pol=1)
</pre>



Observations within this time range will be used for averaging to get the reference phases/amplitudes. Data will be flagged if the SNR is less than minsnr, which can be supplied. The default minsnr is set to 1.0. We can further determine a finer selection of time range within this scan that has clean and stable phases if needed, by setting the new timerange in "trange" below.

<pre>
refcal=ra.refcal_anal(out_corr,timerange=trange,scanidx=[0])
</pre>

It will generate four plots. First and second are phases and amplitudes of the data similar as those produced by ra.graph(), but with the selected time range for averaging highlighted (one can use "bandplt" and "pol" to choose bands and polarization to display as well). The 3rd plot is the averaged phase vs. frequency and the 4th is the averaged amplitude vs. frequency. Those data will be our "analyzed" reference calibration data saved in the returned dictionary (named "refcal" here). The dictionary contains the actual complex values (refcal['refcal']), a flag array with the same shape (refcal['flag']), and some timestamps, e.g., refcal['t_mid'] is the middle of the time range used for averaging. Both refcal['refcal'] and refcal['flag'] have a shape of (15, 2, 34) -- which corresponds to # of antennas, # of polarizations, and # of bands.

If you determine some antenna, band, polarization need to be flagged/unflagged, they have to be manually changed in the returned refcal['flag'] array. In this example, Antenna 12 was not tracking, and the algorithm did not pick up all of them, so we have to do this manually -- setting refcal['flag'][11, :, :]=1

<pre>
refcal['flag'][11]=1
</pre>

If satisfied with the results (by looking at the plots), we can go ahead and send them to the SQL database
<pre>
import cal_header as ch
ch.refcal2sql(refcal)
</pre>

To retrieve the refcal data back from SQL database based on, e.g., a solar data one wish to calibrate. We can provide a time:
<pre>
t=Time('2017-04-07T19:40')
refcal=ra.sql2refcal(t)
</pre>
The resulted refcal have three keys: 'amp' (15 x 2 x 34 array), 'pha' (15 x 2 x 34 array), and 'timestamp' (in jd). The refcal data found will be the closest one PRIOR to the supplied observation time.

== Updating the Reference Calibrations Table ==
The table below lists the known good reference calibrations. To facilitate adding entries to this table, do the following, where the time is after the desired refcal, but before any later refcal:
<pre>
t=Time('2017-06-23T19:40') # retrieves the refcal at 13:07 UT on that day
refcal=ra.sql2refcal(t)
ra.graph_results(refcal, savefigs=True)
</pre>
This will create summary plots of the amplitude and phase, will write the two corresponding *.png files into the /common/webplots/refcal folder, and will print as a text string the lines needed to add an entry. Just cut from the terminal and paste into the wiki editor at the appropriate place to preserve time order.

== Getting Band 4 Phase (2017-Dec-24) ==
[[File: Band4_phase_diff.png | thumb | 600px | '''Figure 1:''' LoRX - HiRX phase differences 2017-12-24. The blue points are the phase differences for common frequencies between pcal_lo_all.fsq and pcal_hi_all.fsq, for parallel feeds (XX and YY), and the orange points are the same for the crossed feeds (XY and YX). Note that the XX and XY points are identical (except at high frequencies where noise is greater), while the YY and YX points differ by what looks like a frequency-independent constant. The green curves are quadratic fits to the blue points. The phase differences, and their fits, are nearly identical on each of the 13 antennas, which was not necessarily expected. Most of the slope here is a delay difference of about 5.9 ns.]]

Because the refcals have up to now been done with the high-frequency receiver (HiRX) on Antenna 14, we are only measuring the reference phase on bands 5-34, even though band 4 has been present in the solar data. However, the shape of the phase vs. frequency is very regular, suggesting that if we know this shape (which could change over time, so it should be remeasured from time to time) then we can predict the Band 4 phase based on the phases of the higher bands.

To do this, we measure the phase differences between the low-frequency receiver (LoRX) and HiRx for those frequencies that are in common. It happens that there are many frequencies in common, since the LoRX covers 1-6 GHz and the HiRX covers 3-18 GHz. In fact, the pcal_lo_all.fsq frequency sequence measures bands 1-12 (1-7 GHz) and the phases seem to be coherent from 6-7 GHz. This provides 38 frequencies in common between LoRX and HiRX, from which to determine the phase differences.

The procedure, then, is to measure the LoRX and HiRX phases near the meridian passage of a strong calibrator (so that all of the feeds are approximately parallel and no feed-rotation-correction is needed). We first observe the source with the LoRX receiver using pcal_lo_all.fsq, and then observe the source with the HiRX receiver using pcal_hi_all.fsq. This is part of another procedure where we then rotate the Ant 14 feed by 90 degrees so that it is crossed with respect to the others. It seems that the XX and YY phases of the parallel feeds should be the same as the XY and YX phases of the crossed feeds, and therefore we should get the same phase differences in the two cases.
Here is an example of obtaining the phases of such observations and plotting the phase differences, with corresponding parabolic fits:

npzfiles = ['/common/webplots/phasecal/20171224131548_1229+020.npz','/common/webplots/phasecal/20171224135049_1229+020.npz',
'/common/webplots/phasecal/20171224142048_1229+020.npz','/common/webplots/phasecal/20171224145148_1229+020.npz'] # LoRX, HiRX, HiRX, LoRX
import read_idb as ri
import numpy as np
import matplotlib.pylab as plt
from util import common_val_idx, lobe
outlo1 = ri.read_npz([npzfiles[0]]) # Parallel feed LoRX
outhi1 = ri.read_npz([npzfiles[1]]) # Parallel feed HiRX
outhi2 = ri.read_npz([npzfiles[2]]) # Crossed feed HiRX
outlo2 = ri.read_npz([npzfiles[3]]) # Crossed feed LoRX
phlo1 = np.angle(np.sum(outlo1['x'][ri.bl2ord[13,0:13]],3)) # Parallel LoRX phases averaged over time
phhi1 = np.angle(np.sum(outhi1['x'][ri.bl2ord[13,0:13]],3)) # Parallel HiRx phases averaged over time
phlo2 = np.angle(np.sum(outlo2['x'][ri.bl2ord[13,0:13]],3)) # Crossed LoRX phases averaged over time
phhi2 = np.angle(np.sum(outhi2['x'][ri.bl2ord[13,0:13]],3)) # Crossed HiRx phases averaged over time
idx1,idx2 = common_val_idx(outlo1['fghz'],outhi1['fghz']) # Find common frequency indexes
pdif1 = np.unwrap(lobe(phlo1[:,:,idx1] - phhi1[:,:,idx2])) # Parallel phase differences at common frequencies
pdif2 = np.unwrap(lobe(phlo2[:,:,idx1] - phhi2[:,:,idx2])) # Crossed phase differences
fcom = outlo1['fghz'][idx1] # Common frequencies
band4_fghz = outlo1['fghz'][23:31] # Band 4 frequencies
ps = []
f, ax = plt.subplots(2,13)
for i in range(13):
for j in range(2):
ax[j,i].cla()
ax[j,i].plot(fcom,pdif1[i,j],'.') # Plot parallel XX, YY phase differences
ax[j,i].plot(fcom,pdif2[i,j+2],'.') # Plot crossed XY, YX phase differences
ax[j,i].set_ylim(-1,11)
ps.append(np.polyfit(fcom,pdif1[i,j],2))
ax[j,i].plot(fcom,np.polyval(ps[-1],fcom),'-')

The resulting plot is shown in '''Figure 1''' above. Curiously, the XX and YY phase differences (blue points) differ by about -0.5 radians, while the XX and YX phase differences (blue in top row vs. orange in bottom row) differ by +0.5 radians. Meanwhile, the XX and XY phase differences are essentially identical. This relates to the X vs. Y delays in some manner that has yet to be understood.

The phase differences can be extrapolated to the band4 phases by
for p in np.array(ps)[::2]:
print ('{:8.2f}'*8).format(*np.polyval(p,band4_fghz))

for p in np.array(ps)[1::2]:
print ('{:8.2f}'*8).format(*np.polyval(p,band4_fghz))
which results in the following tables (I put the headings in by hand):

XX Phase Differences for Band 4
2.87 2.89 2.90 2.92 2.94 2.96 2.97 3.00
------ ------ ------ ------ ------ ------ ------ ------
1 -0.596 -0.562 -0.528 -0.494 -0.460 -0.426 -0.392 -0.358
2 -0.574 -0.541 -0.508 -0.475 -0.442 -0.408 -0.375 -0.341
3 -0.567 -0.535 -0.502 -0.469 -0.436 -0.403 -0.370 -0.337
4 -0.617 -0.583 -0.549 -0.514 -0.479 -0.444 -0.409 -0.374
5 -0.664 -0.629 -0.594 -0.559 -0.523 -0.488 -0.452 -0.416
6 -0.653 -0.619 -0.584 -0.549 -0.514 -0.479 -0.444 -0.409
7 -0.593 -0.558 -0.524 -0.489 -0.454 -0.419 -0.384 -0.349
8 -0.565 -0.532 -0.499 -0.466 -0.433 -0.399 -0.366 -0.332
9 -0.720 -0.686 -0.651 -0.617 -0.582 -0.548 -0.513 -0.478
10 -0.542 -0.510 -0.478 -0.446 -0.413 -0.381 -0.348 -0.315
11 -0.660 -0.626 -0.591 -0.557 -0.522 -0.487 -0.452 -0.417
12 -0.521 -0.490 -0.460 -0.429 -0.397 -0.366 -0.335 -0.303
13 -0.793 -0.753 -0.714 -0.674 -0.634 -0.595 -0.555 -0.515

YY Phase Differences for Band 4
2.87 2.89 2.90 2.92 2.94 2.96 2.97 3.00
------ ------ ------ ------ ------ ------ ------ ------
1 -1.016 -0.980 -0.944 -0.909 -0.873 -0.837 -0.801 -0.765
2 -0.988 -0.952 -0.916 -0.880 -0.844 -0.808 -0.772 -0.736
3 -1.012 -0.977 -0.942 -0.906 -0.871 -0.836 -0.800 -0.765
4 -1.008 -0.973 -0.939 -0.904 -0.869 -0.834 -0.799 -0.764
5 -1.065 -1.027 -0.990 -0.953 -0.916 -0.878 -0.841 -0.803
6 -0.924 -0.890 -0.856 -0.823 -0.789 -0.755 -0.721 -0.687
7 -0.584 -0.561 -0.538 -0.515 -0.492 -0.468 -0.444 -0.420
8 -1.038 -1.003 -0.967 -0.931 -0.895 -0.859 -0.823 -0.787
9 -1.079 -1.045 -1.010 -0.975 -0.939 -0.904 -0.869 -0.834
10 -1.155 -1.117 -1.079 -1.041 -1.003 -0.964 -0.926 -0.888
11 -1.046 -1.010 -0.975 -0.939 -0.903 -0.867 -0.831 -0.795
12 -0.781 -0.750 -0.719 -0.688 -0.657 -0.625 -0.594 -0.562
13 -1.163 -1.123 -1.082 -1.042 -1.001 -0.960 -0.919 -0.879

== Implementation in refcal_anal.py (2018-Mar-05) ==
[[File: delay_curve.png | thumb | 600px | '''Figure 2:''' The band-averaged phase differences in high-frequency bands between 2018-02-05 and 2018-02-07 (reference day). The orange line is a linear fit to the points, forced to pass through (0,0). The green points are the fit values for band 4, which are used to estimate this day's (2018-02-05) band 4 phases. Note that the scatter in ant 6 was because it was not tracking that day.]]
The refcal_anal.py routine has been updated to include the band-averaged band 4 phase calibration. This implementation has the following two components.

:'''1.''' On the day we take the measurements with the above-mentioned LoRX-HiRX observation sequence: It calculates the phase differences between low-frequency and high-frequency measurements over bands 5 - 10, extrapolate it to band 4, and subtract this extrapolated difference from the actual band 4 phases measured by low-frequency receiver to obtain the "reference band 4 phases" as if they were measured by high-frequency receiver. This have be saved in the SQL database with the special keyword '''lohi=True'''.

:'''2.''' On regular days when we do NOT take measurements with LoRX: It calculates the "estimated band 4 phases" using the closest earlier reference band 4 phases calculated in step #1. First, it calculates the phase differences in high-frequency bands between the target day and the reference day (a "delay curve"). This should be fit with a linear curve passing through zero like in '''Figure 2'''. We use this fit to obtain the phase difference in band 4 between the target day and the reference day. Knowing the "reference band 4 phases" from #1, we estimate the band 4 phases on arbitrary day.

To do the first task of saving reference refcal, follow the example lines of code below (in pipeline):

from util import Time
import refcal_anal as ra
trange = Time(['2018-03-06T09:30','2018-03-06T10:30']) #has to contain LoRX and HiRX scans
out = ra.rd_refcal(trange)
out_corr = ra.unrot_refcal(out)
refcal = ra.refcal_anal(out_corr, timerange=Time(['2018-03-06 09:30','2018-03-06 10:00']), lohi=True) #timerange has to specify '''only HiRX scan'''
import cal_header as ch
ch.refcal2sql(refcal, lohi=True) #save to SQL

The last plot created will have the calculated band 4 phases added to the usual refcal phase summary plot. There is no special keyword needed for the second task - the routine now automatically calculate the estimated band 4 phases for every refcal, and produces a new plot showing the delay curve like '''Figure 2''', calculated with respect to the most recent reference LoHi measurement. If this delay curve starts to show large scatters, it is likely that we need a new LoHi scan to obtain the new reference refcal. It is also important to note that the new reference refcal is needed '''after every delay center reset''', since resetting the delay center introduces some offsets in delay curves and therefore causes the band 4 estimation algorithm to fail.

The estimated band 4 phase errors from this algorithm is currently ~20 degrees. We also would like to eventually obtain the phases at every frequencies instead of band-averaged values.

=== List of Saved Reference Refcals ===

2017-12-24 14:06:50.000
2018-02-07 11:00:48.000
2018-02-22 10:46:51.000
2018-03-06 09:46:48.000

== List of Analyzed Reference Calibrations ==

{| class="wikitable" style="text-align: center; width: 800px; height: 200px;"
|-
| Date || Timestamp || Source || Obs Trange || Scan Idx || Avg Trange || Bands || Phase Plot || Amp Plot || Comments
|-
| 2017/04/02 || 06:36:50 || 3c273 || 04:20~11:00 || All || 05:47~07:26 || 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 || [[:File:20170402_refcal_pha.png|Phase]] || [[:File:20170402_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 11:38:17.
|-
| 2017/04/04 || 09:32:50 || 3c273 || 04:43~10:57 || All || 08:46~10:19 || 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 || [[:File:20170404_refcal_pha.png|Phase]] || [[:File:20170404_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 16:43:51.
|-
| 2017/04/05 ||06:44:10 || 3c273 || 04:17~10:30 || All || 04:27~09:34 || 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 || [[:File:20170405_refcal_pha.png|Phase]] || [[:File:20170405_refcal_amp.png|Amp]] || Ant 12 was not tracking.
|-
| 2017/04/06 || 09:54:50|| 3c273 || 04:14~10:49 || All || 05:39~08:11 || 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 || [[:File:20170406_refcal_pha.png|Phase]] || [[:File:20170406_refcal_amp.png|Amp]] || Ant 12 was not tracking.
|-
| 2017/04/07 || 08:30:51|| 3c273 || 04:00~10:30 || 1, 3, 5, 7, 9, 11, 13, 15, 17 || 07:53~09:10 || 5~34 || [[:File:20170407_refcal_pha.png|Phase]] || [[:File:20170407_refcal_amp.png|Amp]] || Ant 12 was not tracking.
|-
| 2017/04/08 || 06:14:51 || 3c273 || 05:00~10:30 || 1, 3, 5, 7, 9, 11, 13 || 05:00~07:00 || 5~34 || [[:File:20170408_refcal_pha.png|Phase]] || [[:File:20170408_refcal_amp.png|Amp]] || Ant 12 was not tracking. Ant 13 not working. Delay center change at 2017-04-08T03:12:26. Another refcal record is added at 2017-04-09T06:14:45.
|-
| 2017/04/10 || 06:57:10 || 3c273 || 04:30~10:30 || 2, 6, 8 || || 5~34 || [[:File:20170410_refcal_pha.png|Phase]] || [[:File:20170410_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 2017-04-08 13:20:39.
|-
| 2017/04/13 || 13:48:39 || 2136+006 || || 0 || || 5~23 || [http://ovsa.njit.edu/refcal/20170413_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170413_refcal_amp.png Amp] ||
|-
| 2017/04/16 || 06:36:48 || 3c273 || 03:00~11:00 || || 05:55~07:20 || 5~34 || [[:File:20170416_refcal_pha.png|Phase]] || [[:File:20170416_refcal_amp.png|Amp]] || Ant 12 was not tracking.
|-
| 2017/04/17 || 06:41:51 || 3c273 || 03:29~10:07 || All || 05:55~07:29 || 5~34 || [[:File:20170417_refcal_pha.png|Phase]] || [[:File:20170417_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 19:12:58.
|-
| 2017/04/26 || 08:06:52 || 3c273 || 02:50~09:28 || All || 07:21~08:57 || 5~34 || [[:File:20170426_refcal_pha.png|Phase]] || [[:File:20170426_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 04:37:28 and 11:51:26.
|-
| 2017/06/11 || 12:56:22 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170611_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170611_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/14 || 02:33:19 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170614_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170614_refcal_amp.png Amp] || No calibration for: Ant 8 Ant 12
|-
| 2017/06/14 || 13:01:19 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170614_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170614_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/15 || 13:05:48 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170615_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170615_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/16 || 13:05:48 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170616_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170616_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/20 || 13:06:26 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170620_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170620_refcal_amp.png Amp] || No calibration for: Ant 1 Ant 12
|-
| 2017/06/21 || 13:06:38 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170621_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170621_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/22 || 13:06:53 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170622_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170622_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/23 || 13:07:09 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170623_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170623_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/24 || 02:25:49 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170624_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170624_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/24 || 13:07:25 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170624_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170624_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/25 || 13:07:43 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170625_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170625_refcal_amp.png Amp] || No calibration for: Ant 10 Ant 12
|-
| 2017/06/26 || 13:15:47 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170626_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170626_refcal_amp.png Amp] || No calibration for: Ant 10 Ant 12
|-
| 2017/06/27 || 13:02:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170627_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170627_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/30 || 02:47:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170630_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170630_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/07/01 || 02:44:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170701_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170701_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/07/02 || 03:01:20 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170702_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170702_refcal_amp.png Amp] ||
|-
| 2017/07/03 || 02:47:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170703_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170703_refcal_amp.png Amp] || No calibration for: Ant 10
|-
| 2017/07/04 || 02:47:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170704_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170704_refcal_amp.png Amp] ||
|-
| 2017/07/05 || 02:55:19 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170705_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170705_refcal_amp.png Amp] ||
|-
| 2017/07/06 || 02:47:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170706_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170706_refcal_amp.png Amp] ||
|-
| 2017/07/07 || 13:12:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170707_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170707_refcal_amp.png Amp] ||
|-
| 2017/07/09 || 02:35:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170709_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170709_refcal_amp.png Amp] ||
|-
| 2017/07/09 || 13:16:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170709_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170709_refcal_amp.png Amp] ||
|-
| 2017/07/10 || 13:14:17 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170710_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170710_refcal_amp.png Amp] ||
|-
| 2017/07/11 || 13:14:18 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170711_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170711_refcal_amp.png Amp] ||
|-
| 2017/07/12 || 13:14:24 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170712_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170712_refcal_amp.png Amp] ||
|-
| 2017/07/13 || 13:14:59 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170713_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170713_refcal_amp.png Amp] ||
|-
| 2017/07/14 || 13:15:35 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170714_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170714_refcal_amp.png Amp] ||
|-
| 2017/07/16 || 02:48:33 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170716_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170716_refcal_amp.png Amp] ||
|-
| 2017/07/16 || 13:16:48 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170716_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170716_refcal_amp.png Amp] ||
|-
| 2017/07/17 || 13:14:54 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170717_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170717_refcal_amp.png Amp] ||
|-
| 2017/07/18 || 13:15:31 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170718_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170718_refcal_amp.png Amp] ||
|-
| 2017/07/19 || 13:16:16 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170719_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170719_refcal_amp.png Amp] ||
|-
| 2017/07/20 || 13:16:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170720_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170720_refcal_amp.png Amp] || No calibration for: Ant 10
|-
| 2017/07/21 || 13:20:57 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170721_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170721_refcal_amp.png Amp] ||
|-
| 2017/07/22 || 13:21:36 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170722_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170722_refcal_amp.png Amp] ||
|-
| 2017/07/23 || 13:34:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170723_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170723_refcal_amp.png Amp] ||
|-
| 2017/07/24 || 13:22:58 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170724_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170724_refcal_amp.png Amp] ||
|-
| 2017/07/25 || 13:23:38 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170725_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170725_refcal_amp.png Amp] ||
|-
| 2017/07/26 || 18:00:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170726_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170726_refcal_amp.png Amp] ||
|-
| 2017/07/28 || 02:42:36 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170728_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170728_refcal_amp.png Amp] ||
|-
| 2017/07/29 || 13:37:40 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170729_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170729_refcal_amp.png Amp] ||
|-
| 2017/07/31 || 13:27:05 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170731_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170731_refcal_amp.png Amp] ||
|-
| 2017/08/01 || 13:28:30 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170801_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170801_refcal_amp.png Amp] ||
|-
| 2017/08/02 || 13:29:13 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170802_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170802_refcal_amp.png Amp] ||
|-
| 2017/08/03 || 13:29:59 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170803_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170803_refcal_amp.png Amp] ||
|-
| 2017/08/05 || 02:35:58 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170805_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170805_refcal_amp.png Amp] ||
|-
| 2017/08/05 || 13:31:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170805_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170805_refcal_amp.png Amp] ||
|-
| 2017/08/06 || 13:32:06 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170806_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170806_refcal_amp.png Amp] ||
|-
| 2017/08/07 || 13:32:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170807_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170807_refcal_amp.png Amp] ||
|-
| 2017/08/08 || 13:33:33 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170808_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170808_refcal_amp.png Amp] ||
|-
| 2017/08/11 || 12:47:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170811_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170811_refcal_amp.png Amp] ||
|-
| 2017/08/12 || 12:43:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170812_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170812_refcal_amp.png Amp] || No calibration for: Ant 9
|-
| 2017/08/13 || 12:39:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170813_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170813_refcal_amp.png Amp] ||
|-
| 2017/08/14 || 12:34:19 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170814_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170814_refcal_amp.png Amp] ||
|-
| 2017/08/15 || 12:31:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170815_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170815_refcal_amp.png Amp] ||
|-
| 2017/08/16 || 12:27:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170816_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170816_refcal_amp.png Amp] ||
|-
| 2017/08/17 || 12:23:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170817_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170817_refcal_amp.png Amp] ||
|-
| 2017/08/18 || 12:19:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170818_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170818_refcal_amp.png Amp] ||
|-
| 2017/08/19 || 12:15:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170819_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170819_refcal_amp.png Amp] ||
|-
| 2017/08/21 || 12:07:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170821_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170821_refcal_amp.png Amp] ||
|-
| 2017/08/22 || 12:03:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170822_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170822_refcal_amp.png Amp] ||
|-
| 2017/08/23 || 12:14:51 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170823_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170823_refcal_amp.png Amp] ||
|-
| 2017/08/24 || 11:55:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170824_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170824_refcal_amp.png Amp] ||
|-
| 2017/08/25 || 14:01:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170825_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170825_refcal_amp.png Amp] ||
|-
| 2017/08/26 || 13:57:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170826_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170826_refcal_amp.png Amp] ||
|-
| 2017/08/28 || 01:03:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170828_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170828_refcal_amp.png Amp] ||
|-
| 2017/08/29 || 00:59:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170829_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170829_refcal_amp.png Amp] ||
|-
| 2017/08/29 || 13:49:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170829_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170829_refcal_amp.png Amp] ||
|-
| 2017/08/30 || 13:49:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170830_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170830_refcal_amp.png Amp] ||
|-
| 2017/08/31 || 13:50:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170831_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170831_refcal_amp.png Amp] ||
|-
| 2017/09/01 || 13:51:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170901_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170901_refcal_amp.png Amp] ||
|-
| 2017/09/02 || 13:52:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170902_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170902_refcal_amp.png Amp] ||
|-
| 2017/09/03 || 13:53:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170903_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170903_refcal_amp.png Amp] ||
|-
| 2017/09/04 || 13:54:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170904_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170904_refcal_amp.png Amp] ||
|-
| 2017/09/05 || 13:54:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170905_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170905_refcal_amp.png Amp] ||
|-
| 2017/09/06 || 13:55:58 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170906_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170906_refcal_amp.png Amp] ||
|-
| 2017/09/07 || 13:56:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170907_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170907_refcal_amp.png Amp] ||
|-
| 2017/09/08 || 13:56:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170908_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170908_refcal_amp.png Amp] ||
|-
| 2017/09/10 || 00:01:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170910_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170910_refcal_amp.png Amp] ||
|-
| 2017/09/10 || 13:57:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170910_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170910_refcal_amp.png Amp] ||
|-
| 2017/09/11 || 13:58:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170911_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170911_refcal_amp.png Amp] ||
|-
| 2017/09/12 || 14:00:11 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170912_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170912_refcal_amp.png Amp] ||
|-
| 2017/09/14 || 04:15:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170914_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170914_refcal_amp.png Amp] ||Refcal at around 14 UT is also good.
|-
| 2017/09/14 || 14:01:48 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170914_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170914_refcal_amp.png Amp] ||
|-
| 2017/09/15 || 14:39:27 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170915_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170915_refcal_amp.png Amp] ||
|-
| 2017/09/16 || 13:46:56 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170916_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170916_refcal_amp.png Amp] ||
|-
| 2017/09/17 || 13:47:46 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170917_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170917_refcal_amp.png Amp] ||
|-
| 2017/09/18 || 14:05:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170918_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170918_refcal_amp.png Amp] ||
|-
| 2017/09/19 || 14:06:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170919_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170919_refcal_amp.png Amp] ||
|-
| 2017/09/22 || 14:08:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170922_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170922_refcal_amp.png Amp] ||
|-
| 2017/09/23 || 14:09:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170923_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170923_refcal_amp.png Amp] ||
|-
| 2017/09/24 || 14:10:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170924_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170924_refcal_amp.png Amp] ||
|-
| 2017/09/25 || 14:17:33 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170925_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170925_refcal_amp.png Amp] ||
|-
| 2017/09/26 || 14:10:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170926_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170926_refcal_amp.png Amp] ||
|-
| 2017/09/27 || 14:06:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170927_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170927_refcal_amp.png Amp] ||
|-
| 2017/09/28 || 14:02:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170928_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170928_refcal_amp.png Amp] ||
|-
| 2017/09/29 || 14:01:20 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170929_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170929_refcal_amp.png Amp] ||
|-
| 2017/09/30 || 13:54:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170930_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170930_refcal_amp.png Amp] ||
|-
| 2017/10/01 || 13:50:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171001_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171001_refcal_amp.png Amp] ||
|-
| 2017/10/02 || 13:47:28 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171002_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171002_refcal_amp.png Amp] ||
|-
| 2017/10/03 || 13:43:25 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171003_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171003_refcal_amp.png Amp] ||
|-
| 2017/10/04 || 13:40:52 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171004_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171004_refcal_amp.png Amp] || No calibration for: Ant 10
|-
| 2017/10/06 || 02:42:39 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171006_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171006_refcal_amp.png Amp] ||
|-
| 2017/10/06 || 13:32:53 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171006_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171006_refcal_amp.png Amp] ||
|-
| 2017/10/07 || 13:30:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171007_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171007_refcal_amp.png Amp] ||
|-
| 2017/10/08 || 13:26:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171008_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171008_refcal_amp.png Amp] ||
|-
| 2017/10/10 || 02:31:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171010_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171010_refcal_amp.png Amp] ||
|-
| 2017/10/11 || 02:23:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171011_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171011_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/12 || 02:19:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171012_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171012_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/13 || 02:15:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171013_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171013_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/13 || 12:54:23 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171013_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171013_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/14 || 12:50:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171014_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171014_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/16 || 02:07:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171016_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171016_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/18 || 01:59:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171018_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171018_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/19 || 12:30:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171019_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171019_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/20 || 12:22:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171021_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171021_refcal_amp.png Amp] ||
|-
| 2017/10/21 || 12:22:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171021_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171021_refcal_amp.png Amp] ||
|-
| 2017/10/22 || 12:18:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171022_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171022_refcal_amp.png Amp] ||
|-
| 2017/10/24 || 12:10:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171024_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171024_refcal_amp.png Amp] || Few frequencies have unusually high amplitudes.
|-
| 2017/10/24 || 01:35:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171024_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171024_refcal_amp.png Amp] ||
|-
| 2017/10/25 || 01:31:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171025_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171025_refcal_amp.png Amp] ||
|-
| 2017/10/26 || 12:02:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171026_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171026_refcal_amp.png Amp] ||
|-
| 2017/10/27 || 11:58:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171027_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171027_refcal_amp.png Amp] ||
|-
| 2017/10/28 || 11:54:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171028_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171028_refcal_amp.png Amp] ||
|-
| 2017/10/29 || 11:50:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171029_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171029_refcal_amp.png Amp] || Ant 8 was down.
|-
| 2017/11/02 || 14:50:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171102_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171102_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/03 || 14:52:20 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171103_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171103_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/04 || 14:53:51 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171104_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171104_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/05 || 14:54:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171105_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171105_refcal_amp.png Amp] || Ant 3 was down. No calibration for: Ant 3
|-
| 2017/11/07 || 00:39:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171107_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171107_00_refcal_amp.png Amp] ||
|-
| 2017/11/07 || 14:56:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171107_14_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171107_14_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/08 || 14:57:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171108_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171108_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/09 || 14:58:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171109_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171109_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/10 || 15:00:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171110_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171110_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/12 || 00:22:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171112_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171112_00_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/12 || 15:02:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171112_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171112_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/15 || 00:12:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171115_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171115_00_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/15 || 15:07:00 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171115_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171115_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/16 || 15:08:14 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171116_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171116_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/17 || 15:09:29 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171117_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171117_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/19 || 00:13:26 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171119_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171119_00_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/19 || 15:11:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171119_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171119_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/21 || 00:11:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171121_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171121_00_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/22 || 00:10:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171122_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171122_00_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/22 || 15:15:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171122_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171122_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/23 || 15:16:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171123_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171123_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/24 || 15:18:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171124_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171124_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/25 || 15:19:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171125_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171125_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/26 || 15:20:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171126_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171126_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/12/03 || 00:05:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171203_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171203_00_refcal_amp.png Amp] ||
|-
| 2017/12/04 || 15:29:13 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171204_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171204_15_refcal_amp.png Amp] || No calibration on Ant 3 and 6
|-
| 2017/12/06 || 00:05:14 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171206_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171206_00_refcal_amp.png Amp] || First refcal on 2017-12-05 is bad. No Ant3 calibration.
|-
| 2017/12/07 || 00:05:06 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171207_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171207_00_refcal_amp.png Amp] || First refcal on 2017-12-06 had Windscram. No Ant3 calibration.
|-
| 2017/12/07 || 15:32:07 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171207_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171207_15_refcal_amp.png Amp] || No Ant 3 calibration.
|-
| 2017/12/08 || 15:33:05 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171208_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171208_15_refcal_amp.png Amp] || No Ant3 calibration.
|-
| 2017/12/13 || 15:37:19 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171213_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171213_15_refcal_amp.png Amp] ||
|-
| 2017/12/18 || 00:06:26 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171218_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171218_00_refcal_amp.png Amp] || No calibration for: Ant 4
|-
| 2017/12/18 || 15:40:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171218_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171218_15_refcal_amp.png Amp] || No calibration for: Ant 4 Ant 6
|-
| 2017/12/19 || 23:57:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171219_23_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171219_23_refcal_amp.png Amp] ||
|-
| 2017/12/22 || 15:27:55 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171222_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171222_15_refcal_amp.png Amp] ||
|-
| 2017/12/23 || 15:43:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171223_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171223_15_refcal_amp.png Amp] ||
|-
| 2017/12/24 || 15:42:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171224_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171224_15_refcal_amp.png Amp] ||
|-
| 2017/12/25 || 15:44:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171225_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171225_15_refcal_amp.png Amp] ||
|-
| 2017/12/27 || 00:10:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171227_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171227_00_refcal_amp.png Amp] ||
|-
| 2017/12/27 || 15:44:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171227_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171227_15_refcal_amp.png Amp] ||
|-
| 2017/12/28 || 15:44:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171228_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171228_15_refcal_amp.png Amp] ||
|-
| 2017/12/29 || 15:45:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171229_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171229_15_refcal_amp.png Amp] ||
|-
| 2017/12/30 || 15:44:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171230_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171230_15_refcal_amp.png Amp] ||
|-
| 2017/12/31 || 15:45:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171231_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171231_15_refcal_amp.png Amp] ||
|-
| 2018/01/01 || 15:45:32 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180101_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180101_15_refcal_amp.png Amp] || No calibration on Ant 6
|-
| 2018/01/02 || 15:45:32 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180102_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180102_15_refcal_amp.png Amp] ||
|-
| 2018/01/04 || 00:17:48 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180104_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180104_00_refcal_amp.png Amp] ||
|-
| 2018/01/04 || 15:45:31 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180104_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180104_15_refcal_amp.png Amp] ||
|-
| 2018/01/06 || 00:19:45 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180106_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180106_00_refcal_amp.png Amp] ||
|-
| 2018/01/07 || 15:45:08 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180107_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180107_15_refcal_amp.png Amp] ||
|-
| 2018/01/08 || 15:44:57 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180108_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180108_15_refcal_amp.png Amp] ||
|-
| 2018/01/10 || 00:23:57 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180110_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180110_00_refcal_amp.png Amp] ||
|-
| 2018/01/15 || 15:42:19 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180115_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180115_15_refcal_amp.png Amp] ||
|-
| 2018/01/16 || 15:41:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180116_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180116_15_refcal_amp.png Amp] ||
|-
| 2018/01/24 || 00:34:04 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180124_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180124_00_refcal_amp.png Amp] ||
|-
| 2018/02/13 || 01:04:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180213_01_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180213_01_refcal_amp.png Amp] ||
|-
| 2018/02/13 || 14:07:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20180213_14_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20180213_14_refcal_amp.png Amp] ||
|-
}

File:Delay curve.png

2018-03-06T19:43:49Z

Nkuroda:

2018 February

2018-02-23T03:44:19Z

Nkuroda: /* Feb 21 */

[http://www.ovsa.njit.edu/wiki/index.php/Expanded_Owens_Valley_Solar_Array#Observing_Log Back to Observing Log]

= Feb 2 =
'''01:42 UT''' DPP crashes during Natsuha's long 3c84 scan for polarization calibration. DPP and correlators was rebooted at ~06 UT. Delays were reset at 11:13 UT except for ant 6 (delay update did not clean the phases for some reasons other than tracking issue).

= Feb 18 =
Natsuha noticed that the Hittite LO is supposed to be sweeping but shows Wait4Trg. That must mean that the 1pps signal is missing. I then checked the GPS clock (NTP server) and it looks okay (but I cannot check the 1pps separately). However, when I insert attenuation into the FEMs, the crios acknowledge it but the power level does not change. What happens is that the crios request the change and the rabbit board waits for the next 1pps before actually switching the attenuators. Since that is not happening, I conclude that the 1pps is missing everywhere in the system. This could be the GPS clock (not likely), the SRS Rubidium clock, or the 1pps distribution system (timing module). If the 1pps was present at the Hittite but not at the antennas, I would suspect the Manlight unit, but since that is not the case I think we can assume it is okay.

= Feb 19 =
'''06:46 UT''' 1 pps is fixed by Kjell. He found that the 1 pps was not being passed through the Rubidium clock, but was present out of the GPS clock, so he bypassed the Rubidium clock.

= Feb 20 =
The yesterday's procedure may have somehow affected the synchronization of the digitizers in the ROACHes (not sure how this might happen). Anyway, '''I started a calibration early this morning, measured the delays, and reset them'''. Just now (about 13:36 UT) I restarted the calibrator scan. We will get about 35 minutes on the calibrator. So please use this scan for the refcal, not the scan before it. Note that Ant 6 is down, so its delay was not checked. Because of the continuing problems with Ant 6 FEM, Kjell will use that antenna for the first installation of the notch filter, so it will be down for quite awhile. Hopefully during that process we will be able to find out what is wrong with it.

Ant 12 front end temperature is still out of wack. I am not sure why.

= Feb 21 =
'''11:55 UT''' Dr. Gary took full lohi.fsq scan for X vs. Y delay measurement and band 4 phase calibration, but all but the first one were compromised due to windscram.

2018 February

2018-02-21T15:46:52Z

Nkuroda:

[http://www.ovsa.njit.edu/wiki/index.php/Expanded_Owens_Valley_Solar_Array#Observing_Log Back to Observing Log]

= Feb 2 =
'''01:42 UT''' DPP crashes during Natsuha's long 3c84 scan for polarization calibration. DPP and correlators was rebooted at ~06 UT. Delays were reset at 11:13 UT except for ant 6 (delay update did not clean the phases for some reasons other than tracking issue).

= Feb 18 =
Natsuha noticed that the Hittite LO is supposed to be sweeping but shows Wait4Trg. That must mean that the 1pps signal is missing. I then checked the GPS clock (NTP server) and it looks okay (but I cannot check the 1pps separately). However, when I insert attenuation into the FEMs, the crios acknowledge it but the power level does not change. What happens is that the crios request the change and the rabbit board waits for the next 1pps before actually switching the attenuators. Since that is not happening, I conclude that the 1pps is missing everywhere in the system. This could be the GPS clock (not likely), the SRS Rubidium clock, or the 1pps distribution system (timing module). If the 1pps was present at the Hittite but not at the antennas, I would suspect the Manlight unit, but since that is not the case I think we can assume it is okay.

= Feb 19 =
'''06:46 UT''' 1 pps is fixed by Kjell. He found that the 1 pps was not being passed through the Rubidium clock, but was present out of the GPS clock, so he bypassed the Rubidium clock.

= Feb 20 =
The yesterday's procedure may have somehow affected the synchronization of the digitizers in the ROACHes (not sure how this might happen). Anyway, '''I started a calibration early this morning, measured the delays, and reset them'''. Just now (about 13:36 UT) I restarted the calibrator scan. We will get about 35 minutes on the calibrator. So please use this scan for the refcal, not the scan before it. Note that Ant 6 is down, so its delay was not checked. Because of the continuing problems with Ant 6 FEM, Kjell will use that antenna for the first installation of the notch filter, so it will be down for quite awhile. Hopefully during that process we will be able to find out what is wrong with it.

Ant 12 front end temperature is still out of wack. I am not sure why.

= Feb 21 =
'''11L55 UT''' Dr. Gary took full lohi.fsq scan for X vs. Y delay measurement and band 4 phase calibration, but all but the first one were compromised due to windscram.

2018 February

2018-02-02T11:18:28Z

Nkuroda: Created page with "[http://www.ovsa.njit.edu/wiki/index.php/Expanded_Owens_Valley_Solar_Array#Observing_Log Back to Observing Log] = Feb 2 = '''01:42 UT''' DPP crashes during Natsuha's long 3c8..."

Owens Valley Solar Arrays

2018-02-02T10:06:47Z

Nkuroda: /* Observing Log */

[[File:Eovsa1.png|border|text-top|800px]]

<big>[http://ovsa.njit.edu/ EOVSA] (Expanded Owens Valley Solar Array) is a new solar-dedicated radio interferometer operated by the New Jersey Institute of Technology. This wiki serves as the site for EOVSA documentation. </big>

== EOVSA Documentation ==

* <big>General</big>
** [[Downconversion and Frequency Tuning]]
** [[Dealing with Radio Frequency Interference]]
** [[Switching between 200 MHz and 300 MHz Correlator]]

* <big>Computer-Network</big>
** [[Computing Systems]]
** [[Network]]

* <big>Control System</big>
** [[27-m Antenna Commands]]
** [[Schedule Commands]]
** [[Control Commands]]
** [[Attenuation and Level Control]]

* <big>Hardware</big>
** [[Hardware Overview]]
** [[2.1-m Antennas]]
** [[27-m Antennas]]

* <big>Software</big>
** [[Calibration Database]]
** [[Stateframe Database]]
** [[Create CASA measurement sets]]

* <big>Calibration</big>
**[[Calibration Overview]]
**[[Pointing Calibration]]
**[[Total Power Calibration]]
**[[System Gain Calibration]]
**[[Reference Gain Calibration]]
**[[Daily Gain Calibration]]
**[[Delay Calibration]]
**[[Bandpass Calibration]]
**[[Polarization Calibration]]
**[[Antenna Position]]
**[[Calibrator Survey]]

* <big>[[Starburst]]</big>

== Using EOVSA Data ==

* <big>Software Basics</big>
** [https://casaguides.nrao.edu CASA Guides]
** [http://www.atnf.csiro.au/computing/software/miriad/userguide/userhtml.html Miriad Guides]
** [http://www.lmsal.com/solarsoft/ SolarSoft IDL]
** [[Basic GitHub Tutorial]]

* <big>EOVSA Data Analysis Guide</big>
** [[Spectrogram Software]]
** [[Imaging]]
**[[Flare Imaging]]

* <big>EOVSA Modeling Guide</big>
**[[GX Simulator]]

* <big>[[EOVSA Imaging Workshop]]</big>

== System Software ==

* LabVIEW software
* Python code [https://github.com/dgary50/eovsa Github repository]

== Observing Log ==
[[2016 November]]

[[2016 December]]

[[2017 January]]

[[2017 February]]

[[2017 March]]

[[2017 April]]

[[2017 May]]

[[2017 June]]

[[2017 July]]

[[2017 August]]

[[2017 September]]

[[2017 October]]

[[2017 November]]

[[2017 December]]

[[2018 January]]

[[2018 February]]

== Tohbans ==

[[Trouble Shooting Guide]]

[[Tohban Records]]

== Flare List ==

{| class="wikitable" style="text-align: center; width: 1200px; height: 200px;"
|-
| '''Date''' || '''RHESSI Time''' || '''RHESSI Lightcurve''' || '''XSP Data''' || '''RHESSI Coverage''' || '''RHESSI Energy Range (keV)''' || '''EOVSA Time''' || '''EOVSA Image''' || '''GOES Class''' || '''Baseline Plot'''
|-
| Jun 3, 2017 || 21:43:25 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/06/03/hsi_20170603_212240_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170603213511.png XSP] || Yes || 6 - 12 || 21:42:00 || || B2.0 || [[TBD | Error]]
|-
| " || 19:29:19 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/06/03/hsi_20170603_181420_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170603173511.png XSP] || Yes || 12 - 25 || 19:24:00 || || C2.5 || [[:File:UDB20170603173518.png | Plot]]
|-
| Jun 2, 2017 || 19:55:54 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/06/02/hsi_20170602_184040_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170602173511.png XSP] || Yes || 6 - 12 || 19:50:00 || || B7.0 || [[:File:UDB20170602173518.png | Plot]]
|-
| " || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/06/02/hsi_20170602_170640_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170602173511.png XSP] || No || || 17:55:00 || || C8.0 || [[:File:UDB20170602173518.png | Plot]]
|-
| Jun 1, 2017 || 20:27:40 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/06/01/hsi_20170601_190640_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170601173511.png XSP] || Yes || 6 - 12 || 20:25:00 || || C1.1 || [[:File:UDB20170601173518.png | Plot]]
|-
| " || 18:04:25 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/06/01/hsi_20170601_173240_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170601173511.png XSP] || Yes || 6 - 12 || 17:55:00 || || C1.4 || [[:File:UDB20170601173518.png | Plot]]
|-
| " || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/06/01/hsi_20170601_173240_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170601173511.png XSP] || No || || 17:37:00 || || C1.0 || [[:File:UDB20170601173518.png | Plot]]
|-
| May 31, 2017 || 23:14:45 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/05/31/hsi_20170531_224100_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170531213511.png XSP] || Yes || 12 - 25 || 23:12:00 || || C2.0 || [[TBD | Error]]
|-
| " || TBD || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/05/31/hsi_20170531_210700_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170531213511.png XSP] || Yes || || 22:20:00 || || B9.8 || [[TBD | Error]]
|-
| " || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/05/31/hsi_20170531_193240_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170531205112.png XSP] || No || || 20:54:00 || || C1.3 || [[TBD | Error]]
|-
| May 28, 2017 || 19:28:10 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/05/28/hsi_20170528_191440_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170528173511.png XSP] || Yes || 25 - 50 || 19:27:00 || || C3.2 || [[:File:UDB20170528173520.png | Plot]]
|-
| May 6, 2017 || 20:07:24 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/05/06/hsi_20170506_194540_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170506180511.png XSP] || Yes || 6 - 12 || 20:06:49 || || B3.5 || [[:File:UDB20170506180518.png | Plot]]
|-
| April 21, 2017 || 17:27:25 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/21/hsi_20170421_170640_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170421141111.png XSP] || Yes || 6 - 12 || 17:26:51 || || B4.1 || [[:File:UDB20170421141120.png | Plot]]
|-
| April 17, 2017 || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/17/hsi_20170417_233740_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170417232011.png XSP] || No || || 23:45:51 || || B2.0 || [[:File:UDB20170417232020.png | Plot]]
|-
| " || 21:40:04 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/17/hsi_20170417_202920_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170417213511.png XSP] || Yes || 6 - 12 || 21:38:51 || || B7.5 || [[:File:UDB20170417213520.png | Plot]]
|-
| April 10, 2017 || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/10/hsi_20170410_171800_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170410173511.png XSP] || No || || 18:26:51 || || B4.8 || [[:File:UDB20170410173520.png | Plot]]
|-
| April 8, 2017 || 23:58:40 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/08/hsi_20170408_225240_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170408231011.png XSP] || Yes || 6 - 12 || 23:53:53 || || B2.3 || [[:File:UDB20170408231022.png | Plot]]
|-
| April 7, 2017 || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/07/hsi_20170407_183600_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170407191511.png XSP] || No || || 19:47:52 || || C4.3 || [[:File:UDB20170407191521.png | Plot]]
|-
| " || 00:23:45 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/06/hsi_20170406_234500_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170406233011.png XSP] || Yes || 12 - 25 || 00:23:52 || || C2.7 || [[:File:UDB20170406233021.png | Plot]]
|-
| April 5, 2017 || 17:38:20 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/05/hsi_20170405_162020_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170405173511.png XSP] || Yes || 6 - 12 || 17:38:51 || || B9.1 || [[:File:UDB20170405173520.png | Plot]]
|-
| " || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/05/hsi_20170405_144600_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170405142811.png XSP] || No || || 15:52:50 || || B5.9 || [[:File:UDB20170405142819.png | Plot]]
|-
| April 4, 2017 || 23:42:10 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/04/hsi_20170404_230340_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170404231511.png XSP] || Yes || 25 - 50 || 23:40:51 || [[:File:Eovsa_flare_20170404T233951.png | Image]] [http://www.ovsa.njit.edu/movies.html Movies] || C4.9 || [[:File:UDB20170404231520.png | Plot]]
|-
| " || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/04/hsi_20170404_182100_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170404191511.png XSP] || No || || 19:42:52 || || B9.4 || [[:File:UDB20170404191521.png | Plot]]
|-
| " || 00:39:35 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/03/hsi_20170403_233020_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170403231511.png XSP] || Yes || 12 - 25 || 00:37:49 || || C1.4 || [[:File:UDB20170404003935.png | Plot]]
|-
| April 3, 2017 || 23:51:49 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/03/hsi_20170403_233020_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170403231511.png XSP] || Yes || 12 - 25 || 23:44:49 || || C1.7 || [[:File:UDB20170403231518.png | Plot]]
|-
| " || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/03/hsi_20170403_184740_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170403191511.png XSP] || No || || 20:11:53 || || C5.0 || [[:File:UDB20170403191522.png | Plot]]
|-
| " || 01:00:44 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/02/hsi_20170402_235700_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170402213511.png XSP] || Yes || 25 - 50 || 01:00:52 || || M1.2 || [[:File:UDB20170402223521.png | Plot]]
|-
| April 2, 2017 || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/02/hsi_20170402_191420_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170402191511.png XSP] || No || || 20:31:49 || || M5.7 || [[:File:UDB20170402191518.png | Plot]]
|-
| " || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/02/hsi_20170402_174020_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170402173511.png XSP] || No || || 18:48:52 || || M2.1 || [[:File:UDB20170402173521.png | Plot]]
|-
| " || 16:25:30 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/02/hsi_20170402_160600_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170402143211.png XSP] || Yes || 12 - 25 || 16:24:50 || 6 sfu || C3.0 ||[[:File:UDB20170402143219.png | Plot]]
|-
| April 1, 2017 || 23:08:10 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/01/hsi_20170401_224940_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170401213511.png XSP] || Yes || 12 - 25 || 23:01:51 || 49 sfu || C5.1 || [[:File:UDB20170401213520.png | Plot]]
|-
| " || 21:48:35 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/01/hsi_20170401_211520_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170401213511.png XSP] || Yes || 50 - 100 || 21:46:51 || 286 sfu || M4.4 || [[:File:UDB20170401213520.png | Plot]]
|-
| " || 19:57:23 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/01/hsi_20170401_194120_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170401191511.png XSP] || Yes || 12 - 25 || 19:42:50 || 15 sfu || C3.7 || [[:File:UDB20170401191519.png | Plot]]
|-
| " || 15:37:25 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/04/01/hsi_20170401_145840_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170401143743.png XSP] || Yes || 12 - 25 || 15:55:21 || 2.5 sfu || B8.1 || [[:File:UDB20170401143750.png | Plot]]
|-
| March 31, 2017 || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/03/31/hsi_20170331_214220_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170331213511.png XSP] || No || || 22:57:49 || || C1.1 || [[:File:UDB20170331213518.png | Plot]]
|-
| March 29, 2017 || 23:27:10 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/03/29/hsi_20170329_223640_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170329213511.png XSP] || Yes || 6 - 12 || 23:40:50 || || B6.5 || [[:File:UDB20170329213519.png | Plot]]
|-
| March 25, 2017 || 23:34:44 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/03/25/hsi_20170325_225100_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170325213511.png XSP] || Yes || 6 - 12 || 23:44:50 || || B2.3 || [[:File:UDB20170327213520.png | Plot]]
|-
| February 23, 2017 || 20:52:00 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/02/23/hsi_20170223_202800_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170223191510.png XSP] || Yes || 6 - 12 || 20:52:50 || || C1.3 || [[:File:UDB20170223191519.png | Plot]]
|-
| " || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/02/23/hsi_20170223_185340_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170223191510.png XSP] || No || || 20:25:50 || || B5.8 || [[:File:UDB20170223191519.png | Plot]]
|-
| February 21, 2017 || - || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/02/21/hsi_20170221_225520_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170221220653.png XSP] || No || || 22:51:10 || || B3.0 || [[:File:UDB20170221220739.png | Plot]]
|-
| January 25, 2017 || 21:27:14 || [http://hessi.ssl.berkeley.edu/hessidata/metadata/2017/01/25/hsi_20170125_204400_corrected_rate.png Lightcurve] || [http://ovsa.njit.edu/flaremon/XSP20170125200011.png XSP] || Yes || 12 - 25 || 21:26:57 || || B8.5 || [[:File:UDB20170125200025.png | Plot]]
|}

2018 January

2018-01-30T15:49:40Z

Nkuroda:

[http://www.ovsa.njit.edu/wiki/index.php/Expanded_Owens_Valley_Solar_Array#Observing_Log Back to Observing Log]

= Jan 14 =
'''16:38 UT''' I just turned on automatic SK flagging of RFI. We will see what problems it creates...

= Jan 20 =
It was windy all day, so no calibrations could be done. The calibration for the following day (Jan 21) was written to the SQL database at 2018 Jan 20, 14:00 UT.

= Jan 22 =
We had a power outage at around 15:10 UT, lasting until a few hours later.

= Jan 23 =
'''19:35 UT''' Kjell modified Ant 1 DCM to add an optical attenuator, in an attempt to reduce the sensitivity of baselines with Ant 1 to air conditioning cycling. I will check the results after some time has passed.

= Jan 30 =
'''00:10 UT''' Delays were reset except for ant 6. They were found to have not been reset following the power outage on Jan 22.

'''03:35 UT''' Delay was reset for ant 6.

'''15:47 UT''' Delays were adjusted again.

2018 January

2018-01-30T03:35:57Z

Nkuroda: /* Jan 30 */

2018 January

2018-01-30T00:12:44Z

Nkuroda:

[http://www.ovsa.njit.edu/wiki/index.php/Expanded_Owens_Valley_Solar_Array#Observing_Log Back to Observing Log]

= Jan 14 =
'''16:38 UT''' I just turned on automatic SK flagging of RFI. We will see what problems it creates...

= Jan 20 =
It was windy all day, so no calibrations could be done. The calibration for the following day (Jan 21) was written to the SQL database at 2018 Jan 20, 14:00 UT.

= Jan 22 =
We had a power outage at around 15:10 UT, lasting until a few hours later.

= Jan 23 =
'''19:35 UT''' Kjell modified Ant 1 DCM to add an optical attenuator, in an attempt to reduce the sensitivity of baselines with Ant 1 to air conditioning cycling. I will check the results after some time has passed.

= Jan 30 =
'''00:10 UT''' Delays were reset except for ant 6, which I (Natsuha) couldn't find good delay center. They were found to have not been reset following the power outage on Jan 22.

Trouble Shooting Guide

2018-01-13T20:50:44Z

Nkuroda: /* Control Room Temp row is red (temp above 85 F) */

This is a trouble shooting guide for tohbans monitoring EOVSA remotely using MobaXterm and VNC Viewer.

'''<General checklist for solar observation>'''

1. Check [http://ovsa.njit.edu/EOVSA/ant_status.php Antenna Status Page] to see if any antenna is under work.

2. In Schedule window, click "Today", "File", choose "Save" (overwrite if prompted), and "Go".

'''Since Feb. 2017, the schedule setup is slightly different.''' Do the following:

2.1. Load 'solar.scd' and hit Today. Save it (overwrite if prompted).

2.2. Open 'solar_plus3c84_Feb2017.scd' in Texteditor (in ~/Dropbox/PythonCode/Current folder).

2.3. Update the sunrise and the sunset time according to the solar.scd file that you just updated.

2.4. Update the PHASECAL (and refcal, which is 1-hr PHASECAL, if necessary) times by '''subtracting''' 4 minutes from each scan (to account for the day-to-day sidereal time shift of each calibrator source). Shift the times of previous and next lines (usually ACQUIRE and SUN) accordingly.

2.5. Save the updated 'solar_plus3c84_Feb2017.scd'. Don't forget to update the DATE as well.

2.6. Load the updated 'solar_plus3c84_Feb2017.scd' and hit Go.

3. '''Antenna Tracking''' - are all antenna tracking (in white color)?

4. '''Frequency Tuning''' - LO1A Sweep Status = "Sweeping", FSeqFile = FSEQ-FILE on the schedule, ErrorMsg = "No error"

5. '''Phase Tracking''' - "ON"

6. '''Power and Attenuation''' - Are all dBm on both H- and V- Channels within the second and third numbers shown in "AGC" on the schedule window? You can also see '''SaveList''' hpol and vpol to check this.

7. '''Temps''' - no fluctuation?

8. '''CryoRX''' - this is for antenna 14 control system. If it is down (Eg: FEMA Outlets & Receiver Voltage/Current values are zero and status is OFF), then issue the command 'ctlgo' in the terminal.

9. Make sure that [http://ovsa.njit.edu/EOVSA/status.php EOVSA Observing Status Page] is being updated and that the data is being recorded. You can check if the data is recorded by typing "ls /data1/IDB |tail" in DPP terminal too.

10. STOW antennas at the end of the observation, if needed (see [http://www.ovsa.njit.edu/wiki/index.php/Trouble_Shooting_Guide#Antenna_does_not_stow_.28Ant_10.29 possible problem with Ant 10])

11. Checking the PHASECAL plots [http://ovsa.njit.edu/phasecal/ PHASECAL plot page], if you notice any unusual noisy data on ants 9, 10, 11 or 13, generally it means the antenna did not stow properly on a previous occasion, so you should issue the commands (for example with ant 13):
step 1: stop ant13

step 2: stow ant13 (wait for it to completely stow--repeat steps 1 and 2 if it seems like it is not stowing after 5 minutes or so)

step 3: track ant13

 New! 12. After the day's observation is over, take a look at the results of all PHASECAL by going to [http://ovsa.njit.edu/phasecal/ PHASECAL plot page]. Note any scan that didn't go well '''without''' the effect of WINDSCRAM (if it was under WINDSCRAM then the data points would appear in red). Record your comments on them in tohban log at [http://ovsa.njit.edu/dev/tohban/ EOVSA tohban log page]. Log other activities during your duty.

 New! 13. Do the reference gain calibration analysis by following the procedures explained in [http://www.ovsa.njit.edu/wiki/index.php/Reference_Gain_Calibration Reference Gain Calibration] '''by 1 pm on the next day'''.



== Schedule window ==

=== I accidentally closed the schedule ===

1. Click "Schedule" (on the left task bar) '''just once'''.

2. Click "Today".

=== “Error: Could not write stateframe to SQL” ===

1. hit STOP on the schedule

2. type $scan-stop in Raw Command window (to stop the data recording)

3. close the schedule (exit out of it)

4. restart the program (by clicking on the icon at the left)

5. hit GO to start the observation again

== Stateframe ==

=== Stateframe is frozen ===

1. Close the old one using command 'kill -2 #', where # is the number followed by My PID on the right corner of the StateFrame, in the terminal of sched@helios. If you have accidentally closed the StateFrame without noting the PID, you can get it by typing '''ps -elf | grep sf_display''' in sched@helios, and looking at the number indicated in the '''fourth column from the left''' on the line that ends with "python /common/python/current/sf_display.py".

2. Open a new Stateframe from the menu on the left ('sf_display')

3. Check the log box of the new stateframe

=== “ACC down?” ===

1. Open pdudigital.solar.pvt on web browser

2. Go to “Actions”

3. Go to “Loads” (on the left)

4. Click item 14 (ACC)

5. Hit “Cycle” and “Ok” when prompted

After rebooting, if Stateframe hangs up & does not respond, open a new Stateframe and give "kill ##" (## = “My PID” on the upper right corner of frozen Stateframe) command to sched@helios.solar.pvt server.

=== ACC Restart ===

After the above procedure, or any time the ACC reboots, it loads from its own disk and this appears to cause glitches in the recorded data due to some synchronization problem. For some reason not understood, the glitches go away when the ACC is loaded from the win computer. To do this,
* Start LabVIEW on the win computer if it is not already open, and click on EOVSA-LabVIEW 2015.lvproj (this may already be open).
* In the new Project Explorer window, under Targets, expand the acc item and right click on acc, then choose Connect from the drop down menu.
* After connecting, click on ACC Master.vi and start it (by selecting the white arrow at the top of the window)
* After it starts successfully, right click on acc in the Project Explorer and choose Disconnect.
* Now you can close the ACC Master.vi window

Note: Rebooting the ACC kills the dppxmp program, so you need to rmlock on the DPP to allow it to run again. It also kills the sf_display, see above.

=== CryoRX tab - Status are OFF, all values are zeroes (Checklist #7 is false)===

What you should be seeing is that FEMA Outlets and Receiver Voltages/Currents are all zeroes, and Status are all OFF (except for Noise Diode, and RFSwitch when using low frequency receiver). This means that the control system for receiver has died. You would still see that antennas are tracking fine and data is recorded, and it doesn't mean that these data are "wrong" or "unusable". They have to be ON and non-zeroes whenever you want to change receiver setting or modify attenuation setting, which sometimes happens during the observation.

<del>To reboot, execute "starburstControl start" in antctl@feanta server (ssh connect from helios, if disconnected).</del>

<12/18/2016> To reboot, just type "ctlgo" in a terminal window on helios in VNC Viewer (you may have to stop the schedule). If for any reason you want to stop the control system, type "ctlstop".

=== Antenna(s) down ===

'''Don’t forget to check the [http://ovsa.njit.edu/EOVSA/ant_status.php Antenna Status page] before considering to “fix” any of the antennas!!'''

Symptoms: Not tracking, showing ‘AT STOW’ or other unwanted coordinates, both AZ and EL permits ON or only EL permit ON, or Axis Lock is ON

Please be noted that the old antennas don't have power controller so $pcycle command won't work on them.

1. Ant 9, 10, 11, 13 could be in this state early in the schedule because they just can't move to commanded position (out of declination limit). In this case, you just have to wait a while (~few hours?)

2. In cold morning, large spike in the current may cause large position error in AT STOW state.

3. Proceed if neither #1 nor #2 is the case. If only AZ permit is ON (the first column), try "reboot 1 ant2" for rebooting ant2, for example.

4. If both AZ and EL permit is ON (the second column) or only EL permit is ON, then give command "$pcycle ant2" for resetting antenna 2. This switches OFF the power to antenna for 15 seconds and switches ON. In Communication tab, Ant 2 line will go red. Wait till it becomes white. If it does not become white, then try "sync ant2". If cRIO does not respond to this, it may be in “safe mode”, in which case you can type "$pcycle crio ant2" (if on ants 1-8 or 12) and it will cycle the power on the cRIO. Note that cRIO takes at least 2 minutes to reboot and come back online. If this sequence does not work, you may try $pcycle again, but keep in mind that this command in general should only be used when needed (i.e. discouraged if it can be avoided), to save wear and tear on the components.

5. Give "tracktable [the current tracktable ***.radec] ant2" and "track ant2" to initiate the tracking. If this does not work, look for temperature to raise (if temperature is low).

=== Ant14's cRIO's "Ant" value (last column) is showing negative value ===

What you may see is that ant14's cRIO's "Ant" value (the very last column) showing negative value (not necessarily the extremely large value like you see for some antennas that are down, but some random number with negative sign). When you observe this, go to "ant14.solar.pvt" on web browser and see if it says in red "Slot1 - Maths error" on the left side. It is believed to occur when the controller is interpolating coordinates for the last-entered track table, and the calculation blows up (i.e. pcal_tab.radec file would have had a day change in it when it was not supposed to).

This should not happen beyond 12/18/2016, but if you observe it beyond this date, '''report to Dr. Gary''', and proceed to do the followings:

1. In "ant14.solar.pvt", go to "Log-in" and log-in (if you need ID/PW, ask Dr. Gary or Natsuha.)

2. Click "Parameters", then select "#10 - Status And Trips".

3. Choose "#10.00".

4. Enter "1070" to "Update values", and hit "change".

5. Go to 'parameter drop down' tab under the 'menu' tab, and choose "#38 - User Trip".

6. Enter "100" to "Update values", and hit "change".

This is supposed to reset the controller. Watch for cRIO's Ant value changes to positive values. Take note on the time you did this procedure, and report it to Dr. Gary.

=== BRIGHTSCRAM ===

Find out which antenna is experiencing this by looking at [http://ovsa.njit.edu/fits/images/ FITS image files]. BRIGHTSCRAM should appear as data-gap like features on the dynamics spectra. If more than two antennas are having BRIGHTSCRAM, then ALL antennas show BRIGHTSCRAM.

Wait for a while (~10 min) to see if it automatically goes away. After it goes away, give "tracktable [the current tracktable ***.radec] ant#" and "track ant#" to initiate the tracking.

=== Frequency Tuning's Sweep Status is “stopped” or "Queue overflow" ===

1. Try "Stop" and "Go" the schedule.

2. If #1 does not work, try "lo1a-reboot" in Raw command window

3. If #2 does not work, try the following raw commands:

<pre>
fseq-off
fseq-init
fseq-file [the current frequency receiver setting ***.fsq] (should be in the right side of the schedule window, like solarhi.fsq)
fseq-on
</pre>

=== Temperature is fluctuating too much ===

Try rebooting the temperature controller by typing "tec$bc ant2" for ant2, for example (tec => Thermo-Electric Controller).

=== nd-on is on (Attenuation) ===

Send "nd-off ant#" raw command to turn off the local noise diode.

[[File:2016-04-13_hpol.png|thumb|upright=2.0|'''Figure 1:''' Example of the oscillation from unbalanced attenuation for ant 12 (orange).]]

[[File:2016-04-15_hpol.png|thumb|upright=2.0|'''Figure 2:''' Example of the oscillation from unbalanced attenuation for ant 2 (red) and 5 (cyan).]]

=== hpol/vpol plot (Savelist) is showing unusual oscillating behavior ===

What you should see is the dBm values of the antenna fluctuating very violently like in '''Figure 1''' and '''2'''. Notice that the amplitude of the fluctuation is ~3 dB, which was one FEMATTN step (at this date). This happens when hattn/vattn settings of the antenna get changed somehow and two polarizations get very unbalanced. The result is that the automatic gain control is not being able to find a happy level for both at the same time, and went into an oscillation. To calm it down, first issue the commands:

<pre>femauto-off ant#
hattn 0 0 ant#
vattn 0 0 ant#</pre>

which turns off the automatic gain control. '''If the antenna is on the Sun, temporarily move it off the Sun using'''
<pre>
radecoff 0 10 ant#
</pre>
With the antenna off the Sun, set the hattn and vattn settings until both power levels are around 3 dB, i.e.:
<pre>
hattn 0 12 ant#
vattn 0 11 ant#
</pre>
where the choice of attenuations (12 and 11 in this example) are those that set the power level close to 3 dB. Finally, turn the gain control back on, with

<pre>
femauto-on ant#
</pre>

'''If you issued the radecoff command, be sure to remove it with'''
<pre>
radecoff 0 0 ant#
</pre>

If the fluctuation is within one FEMATTN step (2 dB as of 12/12/16, check [http://www.ovsa.njit.edu/wiki/index.php/Schedule_Commands#FEMATTN_level_.5Bantennalist.5D Schedule Command - FEMATTN level]), the cause might be just interference. In this case, leave it for a while and see if the oscillation goes away.

=== Antenna does not stow (Ant 10) ===

This mostly seems to happen on Ant 10 (as of ~July 2017). The symptom is that Ant 10 keeps staying at "TO STOW" status while all other (old) antennas are AT STOW already at the end of the observation. You might have tried the command "stow ant10", but it did not change the status. If this continues for more than a minute or so, it is likely that the antenna is running into a limit, and cannot be stowed properly with just "stow ant10" command (you also cannot trust if it does go to STOW by itself much later). To properly stow the antenna, '''issue "stop ant10" first''', then do "stow ant10". You may need to do this multiple times. If you don't properly stow the antenna this way, it may not start tracking automatically next morning, and you will miss the data from this antenna.

=== Antenna tab is blank and an attempt to switch to it causes the Stateframe to freeze ===

This occurred around early June of 2017. The cause turned out to be a change in numpy behavior. Dr. Gary updated the numpy at some point and a subtle difference caused it. This means that we should think about software upgrade as one of the causes of malfunctions of our system sometimes.

=== Antenna shows (Lo or Hi) Hard limit and does not track ===

If a hard limit of any azel antenna (1-8 or 12) is ON, follow this procedure into the Raw Command window of the schedule (with no typos).

1. Make sure that other antennas are tracking a source and that no source changes are coming up within the next minute or so.

2. Put antenna in velocity mode with

<pre>
runmode 2 ant# (e.g for antenna 6, use "runmode 2 ant6")
</pre>

Be sure to specify the antenna, otherwise ALL antennas will move.

3. Drive the antenna OFF the limit in velocity mode.
<pre>
<axis>velocity <speed> ant# (e.g "azimuthvelocity 5000 ant6" for which antenna 6 begins to move in azimuth, to drive off the Lo limit)
</pre>
If the limit is on the azimuth axis, set <axis>velocity as "azimuthvelocity". If the limit is on the elevation axis, set <axis>velocity as "elevationvelocity".
To drive off a low limit, use a positive velocity 5000. To drive off a high limit, use a negative velocity -5000. Units are 1/10000th of a deg/s, so 5000 means 0.5 deg/s.

4. After the limit is off, set the velocity back to zero.

Wait for up to ~10-30 s, until the Hard Limit indicator goes OFF (on the antenna tab).
<pre>
<axis>velocity 0 ant# (e.g "azimuthvelocity 0 ant6" for which antenna 6 stops moving)
</pre>

5. Bring antenna to track.
<pre>
track ant# (e.g "track ant6" for which antenna 6 resumes normal slew to target and starts tracking)
</pre>

If the Lo Hard Limit indicator does not go OFF after 30 s, go ahead with commands 4 and 5 (although tracking will not work) and let Dr. Gary know about it.

=== Control Room Temp row is red (temp above 85 F) ===

This information tells you what the temperature of the EOVSA control room (where all hardwares are) is. When this becomes higher than 85 F, this row becomes red, and we must let Kjell and Dr. Gary know and shut down the system to protect our hardwares. It only happened once before, but when it happens it is critical, so you must act immediately.

Note that, when the row is grey, it is only because the "Pressure" information is zero, which means that we're not getting weather information. So this is not related to the control room temperature.

== Data recording (DPP) ==

=== Data recording has stopped (ls /data1/IDB |tail does not return the most recent file) ===

You need to delete dpplock.txt file. Follow these steps:

1. Enter "top" into user@dpp.solar.pvt command line (if user@dpp.solar.pvt is not there, open a new terminal/terminal tab in VNC viewer & type “ssh -X user@dpp.solar.pvt).

2. Look for "dppxmp” under “command” column. '''If it is there, do NOT delete dpplock.txt.''' If it’s not there, then quit top by hitting “q” and proceed.

3. Type “rmlock" on DPP terminal. Check if the data recording has recovered by sending "ls /data1/IDB |tail".

== Network ==

=== Cannot open VNC Viewer, or VNC Viewer's response is too slow ===

Open the “local” raw command window and Stateframe window by following these steps:

1. Type "cd /common/python/current" in helios.solar.pvt terminal of MobaXterm

2. Type "./sched_commands.py" for raw command window

3. Type "./sf_display.py" for Stateframe window (add “ &” in the end if you want to keep typing the command in the same helios window) -- note that this Stateframe window may take a while (~5 min or more) to load.

== Others ==

[[File:FLM20151005.png|thumb|upright=2.0|'''Figure 3:''' Geosynchronous satellite signals seen in flare monitor.]]

=== Strong interference in flare monitor ===

Twice per year (for 1-2 weeks centered around Mar. 5 and Oct. 5), the Sun enters in geosynchronous satellite belt. In this case, we see strong signals on flare monitor, like in '''Figure 3''' (blue line). These are radio signals from man-made satellites, which will not harm the system and cannot be avoided, so don't be alarmed.

=== The “streak” in the lowest frequency of the dynamic spectrum ===

If you are seeing this at the beginning or at the end of the day, this is the Sun! See '''Figure 4''' and '''Figure 5''' for sample images. When the baseline is foreshortened (as in near sunrise or sunset), the response is quite strong to the solar disk. As the Sun rises, the intensity goes down because the baselines start to get longer. You will actually see the reverse trend in the afternoon, although often the RFI is stronger so the color scale is more blue than in the morning.

[[File:XSP20151202160136.png|thumb|upright=2.0|'''Figure 4:''' The solar signal at the beginning of 2015-12-02 observation period. Notice that the low frequency intensity is decreasing as the Sun rises.]]

[[File:XSP20151202213507.png|thumb|upright=2.0|'''Figure 5:''' The solar signal at the end of 2015-12-02 observation period. Notice the reverse effect compared to '''Figure 4'''.]]

Trouble Shooting Guide

2018-01-13T20:46:58Z

Nkuroda: /* Stateframe */

This is a trouble shooting guide for tohbans monitoring EOVSA remotely using MobaXterm and VNC Viewer.

'''<General checklist for solar observation>'''

1. Check [http://ovsa.njit.edu/EOVSA/ant_status.php Antenna Status Page] to see if any antenna is under work.

2. In Schedule window, click "Today", "File", choose "Save" (overwrite if prompted), and "Go".

'''Since Feb. 2017, the schedule setup is slightly different.''' Do the following:

2.1. Load 'solar.scd' and hit Today. Save it (overwrite if prompted).

2.2. Open 'solar_plus3c84_Feb2017.scd' in Texteditor (in ~/Dropbox/PythonCode/Current folder).

2.3. Update the sunrise and the sunset time according to the solar.scd file that you just updated.

2.4. Update the PHASECAL (and refcal, which is 1-hr PHASECAL, if necessary) times by '''subtracting''' 4 minutes from each scan (to account for the day-to-day sidereal time shift of each calibrator source). Shift the times of previous and next lines (usually ACQUIRE and SUN) accordingly.

2.5. Save the updated 'solar_plus3c84_Feb2017.scd'. Don't forget to update the DATE as well.

2.6. Load the updated 'solar_plus3c84_Feb2017.scd' and hit Go.

3. '''Antenna Tracking''' - are all antenna tracking (in white color)?

4. '''Frequency Tuning''' - LO1A Sweep Status = "Sweeping", FSeqFile = FSEQ-FILE on the schedule, ErrorMsg = "No error"

5. '''Phase Tracking''' - "ON"

6. '''Power and Attenuation''' - Are all dBm on both H- and V- Channels within the second and third numbers shown in "AGC" on the schedule window? You can also see '''SaveList''' hpol and vpol to check this.

7. '''Temps''' - no fluctuation?

8. '''CryoRX''' - this is for antenna 14 control system. If it is down (Eg: FEMA Outlets & Receiver Voltage/Current values are zero and status is OFF), then issue the command 'ctlgo' in the terminal.

9. Make sure that [http://ovsa.njit.edu/EOVSA/status.php EOVSA Observing Status Page] is being updated and that the data is being recorded. You can check if the data is recorded by typing "ls /data1/IDB |tail" in DPP terminal too.

10. STOW antennas at the end of the observation, if needed (see [http://www.ovsa.njit.edu/wiki/index.php/Trouble_Shooting_Guide#Antenna_does_not_stow_.28Ant_10.29 possible problem with Ant 10])

11. Checking the PHASECAL plots [http://ovsa.njit.edu/phasecal/ PHASECAL plot page], if you notice any unusual noisy data on ants 9, 10, 11 or 13, generally it means the antenna did not stow properly on a previous occasion, so you should issue the commands (for example with ant 13):
step 1: stop ant13

step 2: stow ant13 (wait for it to completely stow--repeat steps 1 and 2 if it seems like it is not stowing after 5 minutes or so)

step 3: track ant13

 New! 12. After the day's observation is over, take a look at the results of all PHASECAL by going to [http://ovsa.njit.edu/phasecal/ PHASECAL plot page]. Note any scan that didn't go well '''without''' the effect of WINDSCRAM (if it was under WINDSCRAM then the data points would appear in red). Record your comments on them in tohban log at [http://ovsa.njit.edu/dev/tohban/ EOVSA tohban log page]. Log other activities during your duty.

 New! 13. Do the reference gain calibration analysis by following the procedures explained in [http://www.ovsa.njit.edu/wiki/index.php/Reference_Gain_Calibration Reference Gain Calibration] '''by 1 pm on the next day'''.



== Schedule window ==

=== I accidentally closed the schedule ===

1. Click "Schedule" (on the left task bar) '''just once'''.

2. Click "Today".

=== “Error: Could not write stateframe to SQL” ===

1. hit STOP on the schedule

2. type $scan-stop in Raw Command window (to stop the data recording)

3. close the schedule (exit out of it)

4. restart the program (by clicking on the icon at the left)

5. hit GO to start the observation again

== Stateframe ==

=== Stateframe is frozen ===

1. Close the old one using command 'kill -2 #', where # is the number followed by My PID on the right corner of the StateFrame, in the terminal of sched@helios. If you have accidentally closed the StateFrame without noting the PID, you can get it by typing '''ps -elf | grep sf_display''' in sched@helios, and looking at the number indicated in the '''fourth column from the left''' on the line that ends with "python /common/python/current/sf_display.py".

2. Open a new Stateframe from the menu on the left ('sf_display')

3. Check the log box of the new stateframe

=== “ACC down?” ===

1. Open pdudigital.solar.pvt on web browser

2. Go to “Actions”

3. Go to “Loads” (on the left)

4. Click item 14 (ACC)

5. Hit “Cycle” and “Ok” when prompted

After rebooting, if Stateframe hangs up & does not respond, open a new Stateframe and give "kill ##" (## = “My PID” on the upper right corner of frozen Stateframe) command to sched@helios.solar.pvt server.

=== ACC Restart ===

After the above procedure, or any time the ACC reboots, it loads from its own disk and this appears to cause glitches in the recorded data due to some synchronization problem. For some reason not understood, the glitches go away when the ACC is loaded from the win computer. To do this,
* Start LabVIEW on the win computer if it is not already open, and click on EOVSA-LabVIEW 2015.lvproj (this may already be open).
* In the new Project Explorer window, under Targets, expand the acc item and right click on acc, then choose Connect from the drop down menu.
* After connecting, click on ACC Master.vi and start it (by selecting the white arrow at the top of the window)
* After it starts successfully, right click on acc in the Project Explorer and choose Disconnect.
* Now you can close the ACC Master.vi window

Note: Rebooting the ACC kills the dppxmp program, so you need to rmlock on the DPP to allow it to run again. It also kills the sf_display, see above.

=== CryoRX tab - Status are OFF, all values are zeroes (Checklist #7 is false)===

What you should be seeing is that FEMA Outlets and Receiver Voltages/Currents are all zeroes, and Status are all OFF (except for Noise Diode, and RFSwitch when using low frequency receiver). This means that the control system for receiver has died. You would still see that antennas are tracking fine and data is recorded, and it doesn't mean that these data are "wrong" or "unusable". They have to be ON and non-zeroes whenever you want to change receiver setting or modify attenuation setting, which sometimes happens during the observation.

<del>To reboot, execute "starburstControl start" in antctl@feanta server (ssh connect from helios, if disconnected).</del>

<12/18/2016> To reboot, just type "ctlgo" in a terminal window on helios in VNC Viewer (you may have to stop the schedule). If for any reason you want to stop the control system, type "ctlstop".

=== Antenna(s) down ===

'''Don’t forget to check the [http://ovsa.njit.edu/EOVSA/ant_status.php Antenna Status page] before considering to “fix” any of the antennas!!'''

Symptoms: Not tracking, showing ‘AT STOW’ or other unwanted coordinates, both AZ and EL permits ON or only EL permit ON, or Axis Lock is ON

Please be noted that the old antennas don't have power controller so $pcycle command won't work on them.

1. Ant 9, 10, 11, 13 could be in this state early in the schedule because they just can't move to commanded position (out of declination limit). In this case, you just have to wait a while (~few hours?)

2. In cold morning, large spike in the current may cause large position error in AT STOW state.

3. Proceed if neither #1 nor #2 is the case. If only AZ permit is ON (the first column), try "reboot 1 ant2" for rebooting ant2, for example.

4. If both AZ and EL permit is ON (the second column) or only EL permit is ON, then give command "$pcycle ant2" for resetting antenna 2. This switches OFF the power to antenna for 15 seconds and switches ON. In Communication tab, Ant 2 line will go red. Wait till it becomes white. If it does not become white, then try "sync ant2". If cRIO does not respond to this, it may be in “safe mode”, in which case you can type "$pcycle crio ant2" (if on ants 1-8 or 12) and it will cycle the power on the cRIO. Note that cRIO takes at least 2 minutes to reboot and come back online. If this sequence does not work, you may try $pcycle again, but keep in mind that this command in general should only be used when needed (i.e. discouraged if it can be avoided), to save wear and tear on the components.

5. Give "tracktable [the current tracktable ***.radec] ant2" and "track ant2" to initiate the tracking. If this does not work, look for temperature to raise (if temperature is low).

=== Ant14's cRIO's "Ant" value (last column) is showing negative value ===

What you may see is that ant14's cRIO's "Ant" value (the very last column) showing negative value (not necessarily the extremely large value like you see for some antennas that are down, but some random number with negative sign). When you observe this, go to "ant14.solar.pvt" on web browser and see if it says in red "Slot1 - Maths error" on the left side. It is believed to occur when the controller is interpolating coordinates for the last-entered track table, and the calculation blows up (i.e. pcal_tab.radec file would have had a day change in it when it was not supposed to).

This should not happen beyond 12/18/2016, but if you observe it beyond this date, '''report to Dr. Gary''', and proceed to do the followings:

1. In "ant14.solar.pvt", go to "Log-in" and log-in (if you need ID/PW, ask Dr. Gary or Natsuha.)

2. Click "Parameters", then select "#10 - Status And Trips".

3. Choose "#10.00".

4. Enter "1070" to "Update values", and hit "change".

5. Go to 'parameter drop down' tab under the 'menu' tab, and choose "#38 - User Trip".

6. Enter "100" to "Update values", and hit "change".

This is supposed to reset the controller. Watch for cRIO's Ant value changes to positive values. Take note on the time you did this procedure, and report it to Dr. Gary.

=== BRIGHTSCRAM ===

Find out which antenna is experiencing this by looking at [http://ovsa.njit.edu/fits/images/ FITS image files]. BRIGHTSCRAM should appear as data-gap like features on the dynamics spectra. If more than two antennas are having BRIGHTSCRAM, then ALL antennas show BRIGHTSCRAM.

Wait for a while (~10 min) to see if it automatically goes away. After it goes away, give "tracktable [the current tracktable ***.radec] ant#" and "track ant#" to initiate the tracking.

=== Frequency Tuning's Sweep Status is “stopped” or "Queue overflow" ===

1. Try "Stop" and "Go" the schedule.

2. If #1 does not work, try "lo1a-reboot" in Raw command window

3. If #2 does not work, try the following raw commands:

<pre>
fseq-off
fseq-init
fseq-file [the current frequency receiver setting ***.fsq] (should be in the right side of the schedule window, like solarhi.fsq)
fseq-on
</pre>

=== Temperature is fluctuating too much ===

Try rebooting the temperature controller by typing "tec$bc ant2" for ant2, for example (tec => Thermo-Electric Controller).

=== nd-on is on (Attenuation) ===

Send "nd-off ant#" raw command to turn off the local noise diode.

[[File:2016-04-13_hpol.png|thumb|upright=2.0|'''Figure 1:''' Example of the oscillation from unbalanced attenuation for ant 12 (orange).]]

[[File:2016-04-15_hpol.png|thumb|upright=2.0|'''Figure 2:''' Example of the oscillation from unbalanced attenuation for ant 2 (red) and 5 (cyan).]]

=== hpol/vpol plot (Savelist) is showing unusual oscillating behavior ===

What you should see is the dBm values of the antenna fluctuating very violently like in '''Figure 1''' and '''2'''. Notice that the amplitude of the fluctuation is ~3 dB, which was one FEMATTN step (at this date). This happens when hattn/vattn settings of the antenna get changed somehow and two polarizations get very unbalanced. The result is that the automatic gain control is not being able to find a happy level for both at the same time, and went into an oscillation. To calm it down, first issue the commands:

<pre>femauto-off ant#
hattn 0 0 ant#
vattn 0 0 ant#</pre>

which turns off the automatic gain control. '''If the antenna is on the Sun, temporarily move it off the Sun using'''
<pre>
radecoff 0 10 ant#
</pre>
With the antenna off the Sun, set the hattn and vattn settings until both power levels are around 3 dB, i.e.:
<pre>
hattn 0 12 ant#
vattn 0 11 ant#
</pre>
where the choice of attenuations (12 and 11 in this example) are those that set the power level close to 3 dB. Finally, turn the gain control back on, with

<pre>
femauto-on ant#
</pre>

'''If you issued the radecoff command, be sure to remove it with'''
<pre>
radecoff 0 0 ant#
</pre>

If the fluctuation is within one FEMATTN step (2 dB as of 12/12/16, check [http://www.ovsa.njit.edu/wiki/index.php/Schedule_Commands#FEMATTN_level_.5Bantennalist.5D Schedule Command - FEMATTN level]), the cause might be just interference. In this case, leave it for a while and see if the oscillation goes away.

=== Antenna does not stow (Ant 10) ===

This mostly seems to happen on Ant 10 (as of ~July 2017). The symptom is that Ant 10 keeps staying at "TO STOW" status while all other (old) antennas are AT STOW already at the end of the observation. You might have tried the command "stow ant10", but it did not change the status. If this continues for more than a minute or so, it is likely that the antenna is running into a limit, and cannot be stowed properly with just "stow ant10" command (you also cannot trust if it does go to STOW by itself much later). To properly stow the antenna, '''issue "stop ant10" first''', then do "stow ant10". You may need to do this multiple times. If you don't properly stow the antenna this way, it may not start tracking automatically next morning, and you will miss the data from this antenna.

=== Antenna tab is blank and an attempt to switch to it causes the Stateframe to freeze ===

This occurred around early June of 2017. The cause turned out to be a change in numpy behavior. Dr. Gary updated the numpy at some point and a subtle difference caused it. This means that we should think about software upgrade as one of the causes of malfunctions of our system sometimes.

=== Antenna shows (Lo or Hi) Hard limit and does not track ===

If a hard limit of any azel antenna (1-8 or 12) is ON, follow this procedure into the Raw Command window of the schedule (with no typos).

1. Make sure that other antennas are tracking a source and that no source changes are coming up within the next minute or so.

2. Put antenna in velocity mode with

<pre>
runmode 2 ant# (e.g for antenna 6, use "runmode 2 ant6")
</pre>

Be sure to specify the antenna, otherwise ALL antennas will move.

3. Drive the antenna OFF the limit in velocity mode.
<pre>
<axis>velocity <speed> ant# (e.g "azimuthvelocity 5000 ant6" for which antenna 6 begins to move in azimuth, to drive off the Lo limit)
</pre>
If the limit is on the azimuth axis, set <axis>velocity as "azimuthvelocity". If the limit is on the elevation axis, set <axis>velocity as "elevationvelocity".
To drive off a low limit, use a positive velocity 5000. To drive off a high limit, use a negative velocity -5000. Units are 1/10000th of a deg/s, so 5000 means 0.5 deg/s.

4. After the limit is off, set the velocity back to zero.

Wait for up to ~10-30 s, until the Hard Limit indicator goes OFF (on the antenna tab).
<pre>
<axis>velocity 0 ant# (e.g "azimuthvelocity 0 ant6" for which antenna 6 stops moving)
</pre>

5. Bring antenna to track.
<pre>
track ant# (e.g "track ant6" for which antenna 6 resumes normal slew to target and starts tracking)
</pre>

If the Lo Hard Limit indicator does not go OFF after 30 s, go ahead with commands 4 and 5 (although tracking will not work) and let Dr. Gary know about it.

=== Control Room Temp row is red (temp above 85 F) ===

This information tells you what the temperature of the EOVSA control room (where all hardwares are) is. When this becomes higher than 85 F, this row becomes red, and we must let Kjell and Dr. Gary know and shut down the system to protest our hardwares. It only happened once before, but when it happen it is critical, so you must act immediately.

Note that, when the row is grey, it is only because the "Pressure" information is zero, which means that we're not getting weather information. So this is not related to the control room temperature.

== Data recording (DPP) ==

=== Data recording has stopped (ls /data1/IDB |tail does not return the most recent file) ===

You need to delete dpplock.txt file. Follow these steps:

1. Enter "top" into user@dpp.solar.pvt command line (if user@dpp.solar.pvt is not there, open a new terminal/terminal tab in VNC viewer & type “ssh -X user@dpp.solar.pvt).

2. Look for "dppxmp” under “command” column. '''If it is there, do NOT delete dpplock.txt.''' If it’s not there, then quit top by hitting “q” and proceed.

3. Type “rmlock" on DPP terminal. Check if the data recording has recovered by sending "ls /data1/IDB |tail".

== Network ==

=== Cannot open VNC Viewer, or VNC Viewer's response is too slow ===

Open the “local” raw command window and Stateframe window by following these steps:

1. Type "cd /common/python/current" in helios.solar.pvt terminal of MobaXterm

2. Type "./sched_commands.py" for raw command window

3. Type "./sf_display.py" for Stateframe window (add “ &” in the end if you want to keep typing the command in the same helios window) -- note that this Stateframe window may take a while (~5 min or more) to load.

== Others ==

[[File:FLM20151005.png|thumb|upright=2.0|'''Figure 3:''' Geosynchronous satellite signals seen in flare monitor.]]

=== Strong interference in flare monitor ===

Twice per year (for 1-2 weeks centered around Mar. 5 and Oct. 5), the Sun enters in geosynchronous satellite belt. In this case, we see strong signals on flare monitor, like in '''Figure 3''' (blue line). These are radio signals from man-made satellites, which will not harm the system and cannot be avoided, so don't be alarmed.

=== The “streak” in the lowest frequency of the dynamic spectrum ===

If you are seeing this at the beginning or at the end of the day, this is the Sun! See '''Figure 4''' and '''Figure 5''' for sample images. When the baseline is foreshortened (as in near sunrise or sunset), the response is quite strong to the solar disk. As the Sun rises, the intensity goes down because the baselines start to get longer. You will actually see the reverse trend in the afternoon, although often the RFI is stronger so the color scale is more blue than in the morning.

[[File:XSP20151202160136.png|thumb|upright=2.0|'''Figure 4:''' The solar signal at the beginning of 2015-12-02 observation period. Notice that the low frequency intensity is decreasing as the Sun rises.]]

[[File:XSP20151202213507.png|thumb|upright=2.0|'''Figure 5:''' The solar signal at the end of 2015-12-02 observation period. Notice the reverse effect compared to '''Figure 4'''.]]

Reference Gain Calibration

2017-12-21T21:28:37Z

Nkuroda: /* List of Analyzed Reference Calibrations */

Reference complex gain calibration refers to determining the "system" amplitude and phase with high precision as a function of IF band (i.e. integrated over each 500 MHz IF band). A typical reference calibration would cover 34 bands, 2 polarizations, and 13 antennas. The routines (on pipeline machine) to retrieve and analyze the data are in the module refcal_anal.py. Start from a time range during which the reference calibration observation occurred (check the [http://ovsa.njit.edu/phasecal/ phasecal results] to see which 1-hr scan had stable phases)

<pre>
import refcal_anal as ra
from util import Time
#example time range of the refcal scan that took place BEFORE the observation
trange=Time(['2017-04-08T14:00','2017-04-08T15:00'])
</pre>



Now read the data from that timerange
<pre>
out=ra.rd_refcal(trange)
</pre>
Note that there are optional arguments that can be given, such as projid='PHASECAL' (the default) and srcid='1229+060', but these are generally not needed.

To correct for differential feed rotation (for refcal data after 05:00 UT on 2017-Jul-01), you can use:
<pre>
out_corr = ra.unrot_refcal(out)
</pre>

Take a look at the phases (averaged over each band):
<pre>
ra.graph(out_corr)
</pre>
By default it displays only bands 5, 11, 17, 23 and polarization XX. To change the bands and polarization to display, use the "bandplt" and 'pol' parameters (better to check more bands).
<pre>
ra.graph(out_corr, bandplt=[5,13,19,25], pol=1)
</pre>



Observations within this time range will be used for averaging to get the reference phases/amplitudes. Data will be flagged if the SNR is less than minsnr, which can be supplied. The default minsnr is set to 1.0. We can further determine a finer selection of time range within this scan that has clean and stable phases if needed, by setting the new timerange in "trange" below.

<pre>
refcal=ra.refcal_anal(out_corr,timerange=trange,scanidx=[0])
</pre>

It will generate four plots. First and second are phases and amplitudes of the data similar as those produced by ra.graph(), but with the selected time range for averaging highlighted (one can use "bandplt" and "pol" to choose bands and polarization to display as well). The 3rd plot is the averaged phase vs. frequency and the 4th is the averaged amplitude vs. frequency. Those data will be our "analyzed" reference calibration data saved in the returned dictionary (named "refcal" here). The dictionary contains the actual complex values (refcal['refcal']), a flag array with the same shape (refcal['flag']), and some timestamps, e.g., refcal['t_mid'] is the middle of the time range used for averaging. Both refcal['refcal'] and refcal['flag'] have a shape of (15, 2, 34) -- which corresponds to # of antennas, # of polarizations, and # of bands.

If you determine some antenna, band, polarization need to be flagged/unflagged, they have to be manually changed in the returned refcal['flag'] array. In this example, Antenna 12 was not tracking, and the algorithm did not pick up all of them, so we have to do this manually -- setting refcal['flag'][11, :, :]=1

<pre>
refcal['flag'][11]=1
</pre>

If satisfied with the results (by looking at the plots), we can go ahead and send them to the SQL database
<pre>
import cal_header as ch
ch.refcal2sql(refcal)
</pre>

To retrieve the refcal data back from SQL database based on, e.g., a solar data one wish to calibrate. We can provide a time:
<pre>
t=Time('2017-04-07T19:40')
refcal=ra.sql2refcal(t)
</pre>
The resulted refcal have three keys: 'amp' (15 x 2 x 34 array), 'pha' (15 x 2 x 34 array), and 'timestamp' (in jd). The refcal data found will be the closest one PRIOR to the supplied observation time.

== Updating the Reference Calibrations Table ==
The table below lists the known good reference calibrations. To facilitate adding entries to this table, do the following, where the time is after the desired refcal, but before any later refcal:
<pre>
t=Time('2017-06-23T19:40') # retrieves the refcal at 13:07 UT on that day
refcal=ra.sql2refcal(t)
ra.graph_results(refcal, savefigs=True)
</pre>
This will create summary plots of the amplitude and phase, will write the two corresponding *.png files into the /common/webplots/refcal folder, and will print as a text string the lines needed to add an entry. Just cut from the terminal and paste into the wiki editor at the appropriate place to preserve time order.

== List of Analyzed Reference Calibrations ==

{| class="wikitable" style="text-align: center; width: 800px; height: 200px;"
|-
| Date || Timestamp || Source || Obs Trange || Scan Idx || Avg Trange || Bands || Phase Plot || Amp Plot || Comments
|-
| 2017/04/02 || 06:36:50 || 3c273 || 04:20~11:00 || All || 05:47~07:26 || 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 || [[:File:20170402_refcal_pha.png|Phase]] || [[:File:20170402_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 11:38:17.
|-
| 2017/04/04 || 09:32:50 || 3c273 || 04:43~10:57 || All || 08:46~10:19 || 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 || [[:File:20170404_refcal_pha.png|Phase]] || [[:File:20170404_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 16:43:51.
|-
| 2017/04/05 ||06:44:10 || 3c273 || 04:17~10:30 || All || 04:27~09:34 || 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 || [[:File:20170405_refcal_pha.png|Phase]] || [[:File:20170405_refcal_amp.png|Amp]] || Ant 12 was not tracking.
|-
| 2017/04/06 || 09:54:50|| 3c273 || 04:14~10:49 || All || 05:39~08:11 || 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 || [[:File:20170406_refcal_pha.png|Phase]] || [[:File:20170406_refcal_amp.png|Amp]] || Ant 12 was not tracking.
|-
| 2017/04/07 || 08:30:51|| 3c273 || 04:00~10:30 || 1, 3, 5, 7, 9, 11, 13, 15, 17 || 07:53~09:10 || 5~34 || [[:File:20170407_refcal_pha.png|Phase]] || [[:File:20170407_refcal_amp.png|Amp]] || Ant 12 was not tracking.
|-
| 2017/04/08 || 06:14:51 || 3c273 || 05:00~10:30 || 1, 3, 5, 7, 9, 11, 13 || 05:00~07:00 || 5~34 || [[:File:20170408_refcal_pha.png|Phase]] || [[:File:20170408_refcal_amp.png|Amp]] || Ant 12 was not tracking. Ant 13 not working. Delay center change at 2017-04-08T03:12:26. Another refcal record is added at 2017-04-09T06:14:45.
|-
| 2017/04/10 || 06:57:10 || 3c273 || 04:30~10:30 || 2, 6, 8 || || 5~34 || [[:File:20170410_refcal_pha.png|Phase]] || [[:File:20170410_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 2017-04-08 13:20:39.
|-
| 2017/04/13 || 13:48:39 || 2136+006 || || 0 || || 5~23 || [http://ovsa.njit.edu/refcal/20170413_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170413_refcal_amp.png Amp] ||
|-
| 2017/04/16 || 06:36:48 || 3c273 || 03:00~11:00 || || 05:55~07:20 || 5~34 || [[:File:20170416_refcal_pha.png|Phase]] || [[:File:20170416_refcal_amp.png|Amp]] || Ant 12 was not tracking.
|-
| 2017/04/17 || 06:41:51 || 3c273 || 03:29~10:07 || All || 05:55~07:29 || 5~34 || [[:File:20170417_refcal_pha.png|Phase]] || [[:File:20170417_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 19:12:58.
|-
| 2017/04/26 || 08:06:52 || 3c273 || 02:50~09:28 || All || 07:21~08:57 || 5~34 || [[:File:20170426_refcal_pha.png|Phase]] || [[:File:20170426_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 04:37:28 and 11:51:26.
|-
| 2017/06/11 || 12:56:22 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170611_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170611_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/14 || 02:33:19 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170614_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170614_refcal_amp.png Amp] || No calibration for: Ant 8 Ant 12
|-
| 2017/06/14 || 13:01:19 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170614_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170614_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/15 || 13:05:48 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170615_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170615_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/16 || 13:05:48 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170616_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170616_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/20 || 13:06:26 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170620_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170620_refcal_amp.png Amp] || No calibration for: Ant 1 Ant 12
|-
| 2017/06/21 || 13:06:38 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170621_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170621_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/22 || 13:06:53 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170622_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170622_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/23 || 13:07:09 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170623_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170623_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/24 || 02:25:49 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170624_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170624_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/24 || 13:07:25 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170624_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170624_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/25 || 13:07:43 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170625_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170625_refcal_amp.png Amp] || No calibration for: Ant 10 Ant 12
|-
| 2017/06/26 || 13:15:47 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170626_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170626_refcal_amp.png Amp] || No calibration for: Ant 10 Ant 12
|-
| 2017/06/27 || 13:02:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170627_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170627_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/30 || 02:47:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170630_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170630_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/07/01 || 02:44:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170701_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170701_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/07/02 || 03:01:20 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170702_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170702_refcal_amp.png Amp] ||
|-
| 2017/07/03 || 02:47:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170703_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170703_refcal_amp.png Amp] || No calibration for: Ant 10
|-
| 2017/07/04 || 02:47:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170704_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170704_refcal_amp.png Amp] ||
|-
| 2017/07/05 || 02:55:19 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170705_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170705_refcal_amp.png Amp] ||
|-
| 2017/07/06 || 02:47:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170706_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170706_refcal_amp.png Amp] ||
|-
| 2017/07/07 || 13:12:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170707_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170707_refcal_amp.png Amp] ||
|-
| 2017/07/09 || 02:35:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170709_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170709_refcal_amp.png Amp] ||
|-
| 2017/07/09 || 13:16:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170709_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170709_refcal_amp.png Amp] ||
|-
| 2017/07/10 || 13:14:17 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170710_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170710_refcal_amp.png Amp] ||
|-
| 2017/07/11 || 13:14:18 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170711_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170711_refcal_amp.png Amp] ||
|-
| 2017/07/12 || 13:14:24 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170712_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170712_refcal_amp.png Amp] ||
|-
| 2017/07/13 || 13:14:59 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170713_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170713_refcal_amp.png Amp] ||
|-
| 2017/07/14 || 13:15:35 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170714_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170714_refcal_amp.png Amp] ||
|-
| 2017/07/16 || 02:48:33 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170716_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170716_refcal_amp.png Amp] ||
|-
| 2017/07/16 || 13:16:48 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170716_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170716_refcal_amp.png Amp] ||
|-
| 2017/07/17 || 13:14:54 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170717_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170717_refcal_amp.png Amp] ||
|-
| 2017/07/18 || 13:15:31 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170718_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170718_refcal_amp.png Amp] ||
|-
| 2017/07/19 || 13:16:16 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170719_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170719_refcal_amp.png Amp] ||
|-
| 2017/07/20 || 13:16:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170720_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170720_refcal_amp.png Amp] || No calibration for: Ant 10
|-
| 2017/07/21 || 13:20:57 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170721_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170721_refcal_amp.png Amp] ||
|-
| 2017/07/22 || 13:21:36 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170722_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170722_refcal_amp.png Amp] ||
|-
| 2017/07/23 || 13:34:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170723_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170723_refcal_amp.png Amp] ||
|-
| 2017/07/24 || 13:22:58 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170724_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170724_refcal_amp.png Amp] ||
|-
| 2017/07/25 || 13:23:38 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170725_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170725_refcal_amp.png Amp] ||
|-
| 2017/07/26 || 18:00:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170726_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170726_refcal_amp.png Amp] ||
|-
| 2017/07/28 || 02:42:36 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170728_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170728_refcal_amp.png Amp] ||
|-
| 2017/07/29 || 13:37:40 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170729_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170729_refcal_amp.png Amp] ||
|-
| 2017/07/31 || 13:27:05 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170731_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170731_refcal_amp.png Amp] ||
|-
| 2017/08/01 || 13:28:30 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170801_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170801_refcal_amp.png Amp] ||
|-
| 2017/08/02 || 13:29:13 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170802_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170802_refcal_amp.png Amp] ||
|-
| 2017/08/03 || 13:29:59 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170803_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170803_refcal_amp.png Amp] ||
|-
| 2017/08/05 || 02:35:58 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170805_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170805_refcal_amp.png Amp] ||
|-
| 2017/08/05 || 13:31:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170805_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170805_refcal_amp.png Amp] ||
|-
| 2017/08/06 || 13:32:06 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170806_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170806_refcal_amp.png Amp] ||
|-
| 2017/08/07 || 13:32:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170807_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170807_refcal_amp.png Amp] ||
|-
| 2017/08/08 || 13:33:33 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170808_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170808_refcal_amp.png Amp] ||
|-
| 2017/08/11 || 12:47:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170811_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170811_refcal_amp.png Amp] ||
|-
| 2017/08/12 || 12:43:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170812_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170812_refcal_amp.png Amp] || No calibration for: Ant 9
|-
| 2017/08/13 || 12:39:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170813_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170813_refcal_amp.png Amp] ||
|-
| 2017/08/14 || 12:34:19 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170814_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170814_refcal_amp.png Amp] ||
|-
| 2017/08/15 || 12:31:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170815_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170815_refcal_amp.png Amp] ||
|-
| 2017/08/16 || 12:27:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170816_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170816_refcal_amp.png Amp] ||
|-
| 2017/08/17 || 12:23:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170817_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170817_refcal_amp.png Amp] ||
|-
| 2017/08/18 || 12:19:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170818_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170818_refcal_amp.png Amp] ||
|-
| 2017/08/19 || 12:15:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170819_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170819_refcal_amp.png Amp] ||
|-
| 2017/08/21 || 12:07:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170821_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170821_refcal_amp.png Amp] ||
|-
| 2017/08/22 || 12:03:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170822_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170822_refcal_amp.png Amp] ||
|-
| 2017/08/23 || 12:14:51 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170823_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170823_refcal_amp.png Amp] ||
|-
| 2017/08/24 || 11:55:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170824_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170824_refcal_amp.png Amp] ||
|-
| 2017/08/25 || 14:01:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170825_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170825_refcal_amp.png Amp] ||
|-
| 2017/08/26 || 13:57:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170826_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170826_refcal_amp.png Amp] ||
|-
| 2017/08/28 || 01:03:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170828_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170828_refcal_amp.png Amp] ||
|-
| 2017/08/29 || 00:59:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170829_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170829_refcal_amp.png Amp] ||
|-
| 2017/08/29 || 13:49:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170829_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170829_refcal_amp.png Amp] ||
|-
| 2017/08/30 || 13:49:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170830_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170830_refcal_amp.png Amp] ||
|-
| 2017/08/31 || 13:50:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170831_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170831_refcal_amp.png Amp] ||
|-
| 2017/09/01 || 13:51:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170901_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170901_refcal_amp.png Amp] ||
|-
| 2017/09/02 || 13:52:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170902_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170902_refcal_amp.png Amp] ||
|-
| 2017/09/03 || 13:53:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170903_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170903_refcal_amp.png Amp] ||
|-
| 2017/09/04 || 13:54:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170904_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170904_refcal_amp.png Amp] ||
|-
| 2017/09/05 || 13:54:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170905_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170905_refcal_amp.png Amp] ||
|-
| 2017/09/06 || 13:55:58 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170906_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170906_refcal_amp.png Amp] ||
|-
| 2017/09/07 || 13:56:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170907_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170907_refcal_amp.png Amp] ||
|-
| 2017/09/08 || 13:56:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170908_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170908_refcal_amp.png Amp] ||
|-
| 2017/09/10 || 00:01:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170910_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170910_refcal_amp.png Amp] ||
|-
| 2017/09/10 || 13:57:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170910_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170910_refcal_amp.png Amp] ||
|-
| 2017/09/11 || 13:58:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170911_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170911_refcal_amp.png Amp] ||
|-
| 2017/09/12 || 14:00:11 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170912_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170912_refcal_amp.png Amp] ||
|-
| 2017/09/14 || 04:15:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170914_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170914_refcal_amp.png Amp] ||Refcal at around 14 UT is also good.
|-
| 2017/09/14 || 14:01:48 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170914_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170914_refcal_amp.png Amp] ||
|-
| 2017/09/15 || 14:39:27 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170915_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170915_refcal_amp.png Amp] ||
|-
| 2017/09/16 || 13:46:56 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170916_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170916_refcal_amp.png Amp] ||
|-
| 2017/09/17 || 13:47:46 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170917_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170917_refcal_amp.png Amp] ||
|-
| 2017/09/18 || 14:05:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170918_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170918_refcal_amp.png Amp] ||
|-
| 2017/09/19 || 14:06:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170919_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170919_refcal_amp.png Amp] ||
|-
| 2017/09/22 || 14:08:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170922_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170922_refcal_amp.png Amp] ||
|-
| 2017/09/23 || 14:09:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170923_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170923_refcal_amp.png Amp] ||
|-
| 2017/09/24 || 14:10:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170924_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170924_refcal_amp.png Amp] ||
|-
| 2017/09/25 || 14:17:33 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170925_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170925_refcal_amp.png Amp] ||
|-
| 2017/09/26 || 14:10:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170926_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170926_refcal_amp.png Amp] ||
|-
| 2017/09/27 || 14:06:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170927_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170927_refcal_amp.png Amp] ||
|-
| 2017/09/28 || 14:02:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170928_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170928_refcal_amp.png Amp] ||
|-
| 2017/09/29 || 14:01:20 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170929_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170929_refcal_amp.png Amp] ||
|-
| 2017/09/30 || 13:54:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170930_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170930_refcal_amp.png Amp] ||
|-
| 2017/10/01 || 13:50:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171001_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171001_refcal_amp.png Amp] ||
|-
| 2017/10/02 || 13:47:28 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171002_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171002_refcal_amp.png Amp] ||
|-
| 2017/10/03 || 13:43:25 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171003_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171003_refcal_amp.png Amp] ||
|-
| 2017/10/04 || 13:40:52 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171004_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171004_refcal_amp.png Amp] || No calibration for: Ant 10
|-
| 2017/10/06 || 02:42:39 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171006_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171006_refcal_amp.png Amp] ||
|-
| 2017/10/06 || 13:32:53 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171006_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171006_refcal_amp.png Amp] ||
|-
| 2017/10/07 || 13:30:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171007_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171007_refcal_amp.png Amp] ||
|-
| 2017/10/08 || 13:26:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171008_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171008_refcal_amp.png Amp] ||
|-
| 2017/10/10 || 02:31:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171010_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171010_refcal_amp.png Amp] ||
|-
| 2017/10/11 || 02:23:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171011_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171011_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/12 || 02:19:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171012_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171012_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/13 || 02:15:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171013_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171013_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/13 || 12:54:23 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171013_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171013_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/14 || 12:50:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171014_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171014_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/16 || 02:07:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171016_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171016_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/18 || 01:59:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171018_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171018_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/19 || 12:30:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171019_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171019_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/20 || 12:22:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171021_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171021_refcal_amp.png Amp] ||
|-
| 2017/10/21 || 12:22:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171021_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171021_refcal_amp.png Amp] ||
|-
| 2017/10/22 || 12:18:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171022_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171022_refcal_amp.png Amp] ||
|-
| 2017/10/24 || 12:10:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171024_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171024_refcal_amp.png Amp] || Few frequencies have unusually high amplitudes.
|-
| 2017/10/24 || 01:35:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171024_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171024_refcal_amp.png Amp] ||
|-
| 2017/10/25 || 01:31:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171025_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171025_refcal_amp.png Amp] ||
|-
| 2017/10/26 || 12:02:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171026_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171026_refcal_amp.png Amp] ||
|-
| 2017/10/27 || 11:58:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171027_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171027_refcal_amp.png Amp] ||
|-
| 2017/10/28 || 11:54:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171028_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171028_refcal_amp.png Amp] ||
|-
| 2017/10/29 || 11:50:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171029_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171029_refcal_amp.png Amp] || Ant 8 was down.
|-
| 2017/11/02 || 14:50:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171102_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171102_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/03 || 14:52:20 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171103_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171103_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/04 || 14:53:51 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171104_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171104_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/05 || 14:54:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171105_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171105_refcal_amp.png Amp] || Ant 3 was down. No calibration for: Ant 3
|-
| 2017/11/07 || 00:39:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171107_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171107_00_refcal_amp.png Amp] ||
|-
| 2017/11/07 || 14:56:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171107_14_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171107_14_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/08 || 14:57:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171108_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171108_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/09 || 14:58:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171109_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171109_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/10 || 15:00:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171110_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171110_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/12 || 00:22:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171112_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171112_00_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/12 || 15:02:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171112_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171112_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/15 || 00:12:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171115_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171115_00_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/15 || 15:07:00 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171115_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171115_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/16 || 15:08:14 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171116_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171116_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/17 || 15:09:29 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171117_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171117_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/19 || 00:13:26 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171119_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171119_00_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/19 || 15:11:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171119_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171119_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/21 || 00:11:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171121_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171121_00_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/22 || 00:10:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171122_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171122_00_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/22 || 15:15:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171122_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171122_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/23 || 15:16:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171123_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171123_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/24 || 15:18:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171124_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171124_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/25 || 15:19:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171125_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171125_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/26 || 15:20:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171126_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171126_15_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/12/03 || 00:05:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171203_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171203_00_refcal_amp.png Amp] ||
|-
| 2017/12/04 || 15:29:13 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171204_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171204_15_refcal_amp.png Amp] || No calibration on Ant 3 and 6
|-
| 2017/12/06 || 00:05:14 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171206_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171206_00_refcal_amp.png Amp] || First refcal on 2017-12-05 is bad. No Ant3 calibration.
|-
| 2017/12/07 || 00:05:06 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171207_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171207_00_refcal_amp.png Amp] || First refcal on 2017-12-06 had Windscram. No Ant3 calibration.
|-
| 2017/12/07 || 15:32:07 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171207_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171207_15_refcal_amp.png Amp] || No Ant 3 calibration.
|-
| 2017/12/08 || 15:33:05 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171208_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171208_15_refcal_amp.png Amp] || No Ant3 calibration.
|-
| 2017/12/13 || 15:37:19 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171213_15_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171213_15_refcal_amp.png Amp] ||
|-
| 2017/12/18 || 00:06:26 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171218_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171218_00_refcal_amp.png Amp] || No calibration for: Ant 4
|-

Reference Gain Calibration

2017-12-21T21:05:17Z

Nkuroda: /* List of Analyzed Reference Calibrations */

2017 November

2017-11-29T00:51:39Z

Nkuroda: /* Nov 27 */

[http://www.ovsa.njit.edu/wiki/index.php/Expanded_Owens_Valley_Solar_Array#Observing_Log Back to Observing Log]

= Nov 07 =
'''12:28 UT''' There have been some notable issues in the past few days. The first is that, around Nov. 1 I rebooted the ACC, which loaded it from the disk copy of the LabVIEW code. After that time, we noticed some glitches that I recalled from a previous time, but I could not recall the source. Looking at some old emails from Aug. 31 (see the Aug. 31 observing log entry for more information), we realized that the glitches were solved by loading the ACC code from memory, i.e. by downloading the source code from the Win computer. This is done by starting LabVIEW and launching ''Targets/ACC/Startup/ACC Master'' from the project page. After the target is runnning on the ACC, right click and select Disconnect from the menu. At present, we cannot explain why this should be any different from running it from the disk copy, but when run this way the glitches do disappear. The ACC was reloaded in this way on Nov. 6. We did an experiment by recompiling the deploying the Win1 copy back to the ACC, and that '''did not''' change the behavior. So there are a couple of scans on Nov. 6 that have the glitches.

A completely separate issue is that the dynamic spectrum seen in the daily spectrogram overview plots began to show an amplitude pattern starting around Oct 22 that became progressively more pronounced until the ACC was rebooted on Nov. 1. After that, the spectrogram went back to its usual appearance. I am not sure whether calibration of the data from Oct 22 - Nov 1 will be impacted, but this does seem to be an issue with synchronization of the DCM attenuation cycling. The lesson is that we should reboot the ACC from time to time, perhaps once/week.

= Nov 27 =
There was a rather pervasive power outage this morning, which took a lot of effort to recover from. Here is the list of actions:

- Most crios were down. Efforts by Gelu, Natsuha and I were needed to get them working. The crio on ant11 is still down.

- The network port to ant1 was down. I reset the port, but then had to cycle the power on both ant1 and crio1 to get their network address and NTP working.

- The front end on ant1 was also not working (probably the same reason) so I had to cycle its power.

- Tawa did not reboot properly, so I cycled its power. It is now up.

- The DPP was up, but the Myricom driver did not load, so I had to load it manually to recover the interfaces eth2 and eth3.

- The packets were not all there from the correlator, so I reloaded the correlator design. That means we have to remeasure the delays on a calibrator, but as luck would have it, we have high wind conditions. As soon as a calibrator measurement is possible, we need to set the delays. '''Delays were set at ~ 15:00 UT, and were refined just for ants 6 and 8 at ~00:50 UT next day.'''

- The ant14 control system was down. I had to do the following:

restart the amplifier bias program on the lna14 machine.

stop and start the control system on feanta (basically like issuing ctlstop and ctlgo from helios).

cycle the power on the BRICK (outlet 3)

issue the FRM-HOME ant14 command

issue the RX-SELECT HI ant14 command

issue the $LNA-INIT command (also had to fudge the HH drain voltage value)

- The schedule was not communicating with the SQL server, so I had to close the program and restart it.

'''At the end of the day, all antennas except for 11 & 13 (and 3, which has been down for a while for gear box failure) are back.'''

= Nov 28 =
Ant 11 and 13 remains down due to motion fault in one of their axis, according to Gelu.

2017 November

2017-11-28T23:14:10Z

Nkuroda: /* Nov 27 */

[http://www.ovsa.njit.edu/wiki/index.php/Expanded_Owens_Valley_Solar_Array#Observing_Log Back to Observing Log]

= Nov 07 =
'''12:28 UT''' There have been some notable issues in the past few days. The first is that, around Nov. 1 I rebooted the ACC, which loaded it from the disk copy of the LabVIEW code. After that time, we noticed some glitches that I recalled from a previous time, but I could not recall the source. Looking at some old emails from Aug. 31 (see the Aug. 31 observing log entry for more information), we realized that the glitches were solved by loading the ACC code from memory, i.e. by downloading the source code from the Win computer. This is done by starting LabVIEW and launching ''Targets/ACC/Startup/ACC Master'' from the project page. After the target is runnning on the ACC, right click and select Disconnect from the menu. At present, we cannot explain why this should be any different from running it from the disk copy, but when run this way the glitches do disappear. The ACC was reloaded in this way on Nov. 6. We did an experiment by recompiling the deploying the Win1 copy back to the ACC, and that '''did not''' change the behavior. So there are a couple of scans on Nov. 6 that have the glitches.

A completely separate issue is that the dynamic spectrum seen in the daily spectrogram overview plots began to show an amplitude pattern starting around Oct 22 that became progressively more pronounced until the ACC was rebooted on Nov. 1. After that, the spectrogram went back to its usual appearance. I am not sure whether calibration of the data from Oct 22 - Nov 1 will be impacted, but this does seem to be an issue with synchronization of the DCM attenuation cycling. The lesson is that we should reboot the ACC from time to time, perhaps once/week.

= Nov 27 =
There was a rather pervasive power outage this morning, which took a lot of effort to recover from. Here is the list of actions:

- Most crios were down. Efforts by Gelu, Natsuha and I were needed to get them working. The crio on ant11 is still down.

- The network port to ant1 was down. I reset the port, but then had to cycle the power on both ant1 and crio1 to get their network address and NTP working.

- The front end on ant1 was also not working (probably the same reason) so I had to cycle its power.

- Tawa did not reboot properly, so I cycled its power. It is now up.

- The DPP was up, but the Myricom driver did not load, so I had to load it manually to recover the interfaces eth2 and eth3.

- The packets were not all there from the correlator, so I reloaded the correlator design. That means we have to remeasure the delays on a calibrator, but as luck would have it, we have high wind conditions. As soon as a calibrator measurement is possible, we need to set the delays. '''Delays were set at ~ 15:00 UT.'''

- The ant14 control system was down. I had to do the following:

restart the amplifier bias program on the lna14 machine.

stop and start the control system on feanta (basically like issuing ctlstop and ctlgo from helios).

cycle the power on the BRICK (outlet 3)

issue the FRM-HOME ant14 command

issue the RX-SELECT HI ant14 command

issue the $LNA-INIT command (also had to fudge the HH drain voltage value)

- The schedule was not communicating with the SQL server, so I had to close the program and restart it.

'''At the end of the day, all antennas except for 11 & 13 (and 3, which has been down for a while for gear box failure) are back.'''

= Nov 28 =
Ant 11 and 13 remains down due to motion fault in one of their axis, according to Gelu.

2017 November

2017-11-28T23:12:33Z

Nkuroda:

[http://www.ovsa.njit.edu/wiki/index.php/Expanded_Owens_Valley_Solar_Array#Observing_Log Back to Observing Log]

= Nov 07 =
'''12:28 UT''' There have been some notable issues in the past few days. The first is that, around Nov. 1 I rebooted the ACC, which loaded it from the disk copy of the LabVIEW code. After that time, we noticed some glitches that I recalled from a previous time, but I could not recall the source. Looking at some old emails from Aug. 31 (see the Aug. 31 observing log entry for more information), we realized that the glitches were solved by loading the ACC code from memory, i.e. by downloading the source code from the Win computer. This is done by starting LabVIEW and launching ''Targets/ACC/Startup/ACC Master'' from the project page. After the target is runnning on the ACC, right click and select Disconnect from the menu. At present, we cannot explain why this should be any different from running it from the disk copy, but when run this way the glitches do disappear. The ACC was reloaded in this way on Nov. 6. We did an experiment by recompiling the deploying the Win1 copy back to the ACC, and that '''did not''' change the behavior. So there are a couple of scans on Nov. 6 that have the glitches.

A completely separate issue is that the dynamic spectrum seen in the daily spectrogram overview plots began to show an amplitude pattern starting around Oct 22 that became progressively more pronounced until the ACC was rebooted on Nov. 1. After that, the spectrogram went back to its usual appearance. I am not sure whether calibration of the data from Oct 22 - Nov 1 will be impacted, but this does seem to be an issue with synchronization of the DCM attenuation cycling. The lesson is that we should reboot the ACC from time to time, perhaps once/week.

= Nov 27 =
There was a rather pervasive power outage this morning, which took a lot of effort to recover from. Here is the list of actions:

- Most crios were down. Efforts by Gelu, Natsuha and I were needed to get them working. The crio on ant11 is still down.

- The network port to ant1 was down. I reset the port, but then had to cycle the power on both ant1 and crio1 to get their network address and NTP working.

- The front end on ant1 was also not working (probably the same reason) so I had to cycle its power.

- Tawa did not reboot properly, so I cycled its power. It is now up.

- The DPP was up, but the Myricom driver did not load, so I had to load it manually to recover the interfaces eth2 and eth3.

- The packets were not all there from the correlator, so I reloaded the correlator design. That means we have to remeasure the delays on a calibrator, but as luck would have it, we have high wind conditions. As soon as a calibrator measurement is possible, we need to set the delays. '''Delays were set at ~ 15:00 UT.'''

- The ant14 control system was down. I had to do the following:

restart the amplifier bias program on the lna14 machine.

stop and start the control system on feanta (basically like issuing ctlstop and ctlgo from helios).

cycle the power on the BRICK (outlet 3)

issue the FRM-HOME ant14 command

issue the RX-SELECT HI ant14 command

issue the $LNA-INIT command (also had to fudge the HH drain voltage value)

- The schedule was not communicating with the SQL server, so I had to close the program and restart it.

= Nov 28 =
Ant 11 and 13 remains down due to motion fault in one of their axis, according to Gelu.

Trouble Shooting Guide

2017-11-21T03:22:53Z

Nkuroda: /* Stateframe is frozen */

This is a trouble shooting guide for tohbans monitoring EOVSA remotely using MobaXterm and VNC Viewer.

'''<General checklist for solar observation>'''

1. Check [http://ovsa.njit.edu/EOVSA/ant_status.php Antenna Status Page] to see if any antenna is under work.

2. In Schedule window, click "Today", "File", choose "Save" (overwrite if prompted), and "Go".

'''Since Feb. 2017, the schedule setup is slightly different.''' Do the following:

2.1. Load 'solar.scd' and hit Today. Save it (overwrite if prompted).

2.2. Open 'solar_plus3c84_Feb2017.scd' in Texteditor (in ~/Dropbox/PythonCode/Current folder).

2.3. Update the sunrise and the sunset time according to the solar.scd file that you just updated.

2.4. Update the PHASECAL (and refcal, which is 1-hr PHASECAL, if necessary) times by '''subtracting''' 4 minutes from each scan (to account for the day-to-day sidereal time shift of each calibrator source). Shift the times of previous and next lines (usually ACQUIRE and SUN) accordingly.

2.5. Save the updated 'solar_plus3c84_Feb2017.scd'. Don't forget to update the DATE as well.

2.6. Load the updated 'solar_plus3c84_Feb2017.scd' and hit Go.

3. '''Antenna Tracking''' - are all antenna tracking (in white color)?

4. '''Frequency Tuning''' - LO1A Sweep Status = "Sweeping", FSeqFile = FSEQ-FILE on the schedule, ErrorMsg = "No error"

5. '''Phase Tracking''' - "ON"

6. '''Power and Attenuation''' - Are all dBm on both H- and V- Channels within the second and third numbers shown in "AGC" on the schedule window? You can also see '''SaveList''' hpol and vpol to check this.

7. '''Temps''' - no fluctuation?

8. '''CryoRX''' - this is for antenna 14 control system. If it is down (Eg: FEMA Outlets & Receiver Voltage/Current values are zero and status is OFF), then issue the command 'ctlgo' in the terminal.

9. Make sure that [http://ovsa.njit.edu/EOVSA/status.php EOVSA Observing Status Page] is being updated and that the data is being recorded. You can check if the data is recorded by typing "ls /data1/IDB |tail" in DPP terminal too.

10. STOW antennas at the end of the observation, if needed (see [http://www.ovsa.njit.edu/wiki/index.php/Trouble_Shooting_Guide#Antenna_does_not_stow_.28Ant_10.29 possible problem with Ant 10])

11. Checking the PHASECAL plots [http://ovsa.njit.edu/phasecal/ PHASECAL plot page], if you notice any unusual noisy data on ants 9, 10, 11 or 13, generally it means the antenna did not stow properly on a previous occasion, so you should issue the commands (for example with ant 13):
step 1: stop ant13

step 2: stow ant13 (wait for it to completely stow--repeat steps 1 and 2 if it seems like it is not stowing after 5 minutes or so)

step 3: track ant13

 New! 12. After the day's observation is over, take a look at the results of all PHASECAL by going to [http://ovsa.njit.edu/phasecal/ PHASECAL plot page]. Note any scan that didn't go well '''without''' the effect of WINDSCRAM (if it was under WINDSCRAM then the data points would appear in red). Record your comments on them in tohban log at [http://ovsa.njit.edu/dev/data-browsing/index.php EOVSA tohban log page]. Log other activities during your duty.

 New! 13. Do the reference gain calibration analysis by following the procedures explained in [http://www.ovsa.njit.edu/wiki/index.php/Reference_Gain_Calibration Reference Gain Calibration] '''by 1 pm on the next day'''.



== Schedule window ==

=== I accidentally closed the schedule ===

1. Click "Schedule" (on the left task bar) '''just once'''.

2. Click "Today".

=== “Error: Could not write stateframe to SQL” ===

1. hit STOP on the schedule

2. type $scan-stop in Raw Command window (to stop the data recording)

3. close the schedule (exit out of it)

4. restart the program (by clicking on the icon at the left)

5. hit GO to start the observation again

== Stateframe ==

=== Stateframe is frozen ===

1. Close the old one using command 'kill -2 #', where # is the number followed by My PID on the right corner of the StateFrame, in the terminal of sched@helios. If you have accidentally closed the StateFrame without noting the PID, you can get it by typing '''ps -elf | grep sf_display''' in sched@helios, and looking at the number indicated in the '''fourth column from the left''' on the line that ends with "python /common/python/current/sf_display.py".

2. Open a new Stateframe from the menu on the left ('sf_display')

3. Check the log box of the new stateframe

=== “ACC down?” ===

1. Open pdudigital.solar.pvt on web browser

2. Go to “Actions”

3. Go to “Loads” (on the left)

4. Click item 14 (ACC)

5. Hit “Cycle” and “Ok” when prompted

After rebooting, if Stateframe hangs up & does not respond, open a new Stateframe and give "kill ##" (## = “My PID” on the upper right corner of frozen Stateframe) command to sched@helios.solar.pvt server.

=== CryoRX tab - Status are OFF, all values are zeroes (Checklist #7 is false)===

What you should be seeing is that FEMA Outlets and Receiver Voltages/Currents are all zeroes, and Status are all OFF (except for Noise Diode, and RFSwitch when using low frequency receiver). This means that the control system for receiver has died. You would still see that antennas are tracking fine and data is recorded, and it doesn't mean that these data are "wrong" or "unusable". They have to be ON and non-zeroes whenever you want to change receiver setting or modify attenuation setting, which sometimes happens during the observation.

<del>To reboot, execute "starburstControl start" in antctl@feanta server (ssh connect from helios, if disconnected).</del>

<12/18/2016> To reboot, just type "ctlgo" in a terminal window on helios in VNC Viewer (you may have to stop the schedule). If for any reason you want to stop the control system, type "ctlstop".

=== Antenna(s) down ===

'''Don’t forget to check the [http://ovsa.njit.edu/EOVSA/ant_status.php Antenna Status page] before considering to “fix” any of the antennas!!'''

Symptoms: Not tracking, showing ‘AT STOW’ or other unwanted coordinates, both AZ and EL permits ON or only EL permit ON, or Axis Lock is ON

1. Ant 9, 10, 11, 13 could be in this state early in the schedule because they just can't move to commanded position (out of declination limit). In this case, you just have to wait a while (~few hours?)

2. In cold morning, large spike in the current may cause large position error in AT STOW state.

3. Proceed if neither #1 nor #2 is the case. If only AZ permit is ON (the first column), try "reboot 1 ant2" for rebooting ant2, for example.

4. If both AZ and EL permit is ON (the second column) or only EL permit is ON, then give command "$pcycle ant2" for resetting antenna 2. This switches OFF the power to antenna for 15 seconds and switches ON. In Communication tab, Ant 2 line will go red. Wait till it becomes white. If it does not become white, then try "sync ant2". If cRIO does not respond to this, it may be in “safe mode”, in which case you can type "$pcycle crio ant2" (if on ants 1-8 or 12) and it will cycle the power on the cRIO. Note that cRIO takes at least 2 minutes to reboot and come back online. If this sequence does not work, you may try $pcycle again, but keep in mind that this command in general should only be used when needed (i.e. discouraged if it can be avoided), to save wear and tear on the components.

5. Give "tracktable [the current tracktable ***.radec] ant2" and "track ant2" to initiate the tracking. If this does not work, look for temperature to raise (if temperature is low).

=== Ant14's cRIO's "Ant" value (last column) is showing negative value ===

What you may see is that ant14's cRIO's "Ant" value (the very last column) showing negative value (not necessarily the extremely large value like you see for some antennas that are down, but some random number with negative sign). When you observe this, go to "ant14.solar.pvt" on web browser and see if it says in red "Slot1 - Maths error" on the left side. It is believed to occur when the controller is interpolating coordinates for the last-entered track table, and the calculation blows up (i.e. pcal_tab.radec file would have had a day change in it when it was not supposed to).

This should not happen beyond 12/18/2016, but if you observe it beyond this date, '''report to Dr. Gary''', and proceed to do the followings:

1. In "ant14.solar.pvt", go to "Log-in" and log-in (if you need ID/PW, ask Dr. Gary or Natsuha.)

2. Click "Parameters", then select "#10 - Status And Trips".

3. Choose "#1 - 10.00".

4. Enter "1070" to "Update values", and hit "change".

5. Go to "Parameters" again, and choose "#38 - User Trip".

6. Enter "100" to "Update values", and hit "change".

This is supposed to reset the controller. Watch for cRIO's Ant value changes to positive values. Take note on the time you did this procedure, and report it to Dr. Gary.

=== BRIGHTSCRAM ===

Find out which antenna is experiencing this by looking at [http://ovsa.njit.edu/fits/images/ FITS image files]. BRIGHTSCRAM should appear as data-gap like features on the dynamics spectra. If more than two antennas are having BRIGHTSCRAM, then ALL antennas show BRIGHTSCRAM.

Wait for a while (~10 min) to see if it automatically goes away. After it goes away, give "tracktable [the current tracktable ***.radec] ant#" and "track ant#" to initiate the tracking.

=== Frequency Tuning's Sweep Status is “stopped” or "Queue overflow" ===

1. Try "Stop" and "Go" the schedule.

2. If #1 does not work, try "lo1a-reboot" in Raw command window

3. If #2 does not work, try the following raw commands:

<pre>
fseq-off
fseq-init
fseq-file [the current frequency receiver setting ***.fsq] (should be in the right side of the schedule window, like solarhi.fsq)
fseq-on
</pre>

=== Temperature is fluctuating too much ===

Try rebooting the temperature controller by typing "tec$bc ant2" for ant2, for example (tec => Thermo-Electric Controller).

=== nd-on is on (Attenuation) ===

Send "nd-off ant#" raw command to turn off the local noise diode.

[[File:2016-04-13_hpol.png|thumb|upright=2.0|'''Figure 1:''' Example of the oscillation from unbalanced attenuation for ant 12 (orange).]]

[[File:2016-04-15_hpol.png|thumb|upright=2.0|'''Figure 2:''' Example of the oscillation from unbalanced attenuation for ant 2 (red) and 5 (cyan).]]

=== hpol/vpol plot (Savelist) is showing unusual oscillating behavior ===

What you should see is the dBm values of the antenna fluctuating very violently like in '''Figure 1''' and '''2'''. Notice that the amplitude of the fluctuation is ~3 dB, which was one FEMATTN step (at this date). This happens when hattn/vattn settings of the antenna get changed somehow and two polarizations get very unbalanced. The result is that the automatic gain control is not being able to find a happy level for both at the same time, and went into an oscillation. To calm it down, first issue the commands:

<pre>femauto-off ant#
hattn 0 0 ant#
vattn 0 0 ant#</pre>

which turns off the automatic gain control. '''If the antenna is on the Sun, temporarily move it off the Sun using'''
<pre>
radecoff 0 10 ant#
</pre>
With the antenna off the Sun, set the hattn and vattn settings until both power levels are around 3 dB, i.e.:
<pre>
hattn 0 12 ant#
vattn 0 11 ant#
</pre>
where the choice of attenuations (12 and 11 in this example) are those that set the power level close to 3 dB. Finally, turn the gain control back on, with

<pre>
femauto-on ant#
</pre>

'''If you issued the radecoff command, be sure to remove it with'''
<pre>
radecoff 0 0 ant#
</pre>

If the fluctuation is within one FEMATTN step (2 dB as of 12/12/16, check [http://www.ovsa.njit.edu/wiki/index.php/Schedule_Commands#FEMATTN_level_.5Bantennalist.5D Schedule Command - FEMATTN level]), the cause might be just interference. In this case, leave it for a while and see if the oscillation goes away.

=== Antenna does not stow (Ant 10) ===

This mostly seems to happen on Ant 10 (as of ~July 2017). The symptom is that Ant 10 keeps staying at "TO STOW" status while all other (old) antennas are AT STOW already at the end of the observation. You might have tried the command "stow ant10", but it did not change the status. If this continues for more than a minute or so, it is likely that the antenna is running into a limit, and cannot be stowed properly with just "stow ant10" command (you also cannot trust if it does go to STOW by itself much later). To properly stow the antenna, '''issue "stop ant10" first''', then do "stow ant10". You may need to do this multiple times. If you don't properly stow the antenna this way, it may not start tracking automatically next morning, and you will miss the data from this antenna.

=== Antenna tab is blank and an attempt to switch to it causes the Stateframe to freeze ===

This occurred around early June of 2017. The cause turned out to be a change in numpy behavior. Dr. Gary updated the numpy at some point and a subtle difference caused it. This means that we should think about software upgrade as one of the causes of malfunctions of our system sometimes.

== Data recording (DPP) ==

=== Data recording has stopped (ls /data1/IDB |tail does not return the most recent file) ===

You need to delete dpplock.txt file. Follow these steps:

1. Enter "top" into user@dpp.solar.pvt command line (if user@dpp.solar.pvt is not there, open a new terminal/terminal tab in VNC viewer & type “ssh -X user@dpp.solar.pvt).

2. Look for "dppxmp” under “command” column. '''If it is there, do NOT delete dpplock.txt.''' If it’s not there, then quit top by hitting “q” and proceed.

3. Type “rmlock" on DPP terminal. Check if the data recording has recovered by sending "ls /data1/IDB |tail".

== Network ==

=== Cannot open VNC Viewer, or VNC Viewer's response is too slow ===

Open the “local” raw command window and Stateframe window by following these steps:

1. Type "cd /common/python/current" in helios.solar.pvt terminal of MobaXterm

2. Type "./sched_commands.py" for raw command window

3. Type "./sf_display.py" for Stateframe window (add “ &” in the end if you want to keep typing the command in the same helios window) -- note that this Stateframe window may take a while (~5 min or more) to load.

== Others ==

[[File:FLM20151005.png|thumb|upright=2.0|'''Figure 3:''' Geosynchronous satellite signals seen in flare monitor.]]

=== Strong interference in flare monitor ===

Twice per year (for 1-2 weeks centered around Mar. 5 and Oct. 5), the Sun enters in geosynchronous satellite belt. In this case, we see strong signals on flare monitor, like in '''Figure 3''' (blue line). These are radio signals from man-made satellites, which will not harm the system and cannot be avoided, so don't be alarmed.

=== The “streak” in the lowest frequency of the dynamic spectrum ===

If you are seeing this at the beginning or at the end of the day, this is the Sun! See '''Figure 4''' and '''Figure 5''' for sample images. When the baseline is foreshortened (as in near sunrise or sunset), the response is quite strong to the solar disk. As the Sun rises, the intensity goes down because the baselines start to get longer. You will actually see the reverse trend in the afternoon, although often the RFI is stronger so the color scale is more blue than in the morning.

[[File:XSP20151202160136.png|thumb|upright=2.0|'''Figure 4:''' The solar signal at the beginning of 2015-12-02 observation period. Notice that the low frequency intensity is decreasing as the Sun rises.]]

[[File:XSP20151202213507.png|thumb|upright=2.0|'''Figure 5:''' The solar signal at the end of 2015-12-02 observation period. Notice the reverse effect compared to '''Figure 4'''.]]

Reference Gain Calibration

2017-11-13T04:21:45Z

Nkuroda: /* List of Analyzed Reference Calibrations */

Reference Gain Calibration

2017-11-12T04:38:47Z

Nkuroda: /* List of Analyzed Reference Calibrations */

Reference Gain Calibration

2017-11-11T03:07:09Z

Nkuroda: /* List of Analyzed Reference Calibrations */

Reference Gain Calibration

2017-11-10T20:17:48Z

Nkuroda: /* List of Analyzed Reference Calibrations */

Reference Gain Calibration

2017-11-10T20:10:48Z

Nkuroda: /* List of Analyzed Reference Calibrations */

Reference complex gain calibration refers to determining the "system" amplitude and phase with high precision as a function of IF band (i.e. integrated over each 500 MHz IF band). A typical reference calibration would cover 34 bands, 2 polarizations, and 13 antennas. The routines (on pipeline machine) to retrieve and analyze the data are in the module refcal_anal.py. Start from a time range during which the reference calibration observation occurred (check the [http://ovsa.njit.edu/phasecal/ phasecal results] to see which 1-hr scan had stable phases)

<pre>
import refcal_anal as ra
from util import Time
#example time range of the refcal scan that took place BEFORE the observation
trange=Time(['2017-04-08T14:00','2017-04-08T15:00'])
</pre>



Now read the data from that timerange
<pre>
out=ra.rd_refcal(trange)
</pre>
Note that there are optional arguments that can be given, such as projid='PHASECAL' (the default) and srcid='1229+060', but these are generally not needed.

To correct for differential feed rotation (for refcal data after 05:00 UT on 2017-Jul-01), you can use:
<pre>
out_corr = ra.unrot_refcal(out)
</pre>

Take a look at the phases (averaged over each band):
<pre>
ra.graph(out_corr)
</pre>
By default it displays only bands 5, 11, 17, 23 and polarization XX. To change the bands and polarization to display, use the "bandplt" and 'pol' parameters (better to check more bands).
<pre>
ra.graph(out_corr, bandplt=[5,13,19,25], pol=1)
</pre>



Observations within this time range will be used for averaging to get the reference phases/amplitudes. Data will be flagged if the SNR is less than minsnr, which can be supplied. The default minsnr is set to 1.0. We can further determine a finer selection of time range within this scan that has clean and stable phases if needed, by setting the new timerange in "trange" below.

<pre>
refcal=ra.refcal_anal(out_corr,timerange=trange,scanidx=[0])
</pre>

It will generate four plots. First and second are phases and amplitudes of the data similar as those produced by ra.graph(), but with the selected time range for averaging highlighted (one can use "bandplt" and "pol" to choose bands and polarization to display as well). The 3rd plot is the averaged phase vs. frequency and the 4th is the averaged amplitude vs. frequency. Those data will be our "analyzed" reference calibration data saved in the returned dictionary (named "refcal" here). The dictionary contains the actual complex values (refcal['refcal']), a flag array with the same shape (refcal['flag']), and some timestamps, e.g., refcal['t_mid'] is the middle of the time range used for averaging. Both refcal['refcal'] and refcal['flag'] have a shape of (15, 2, 34) -- which corresponds to # of antennas, # of polarizations, and # of bands.

If you determine some antenna, band, polarization need to be flagged/unflagged, they have to be manually changed in the returned refcal['flag'] array. In this example, Antenna 12 was not tracking, and the algorithm did not pick up all of them, so we have to do this manually -- setting refcal['flag'][11, :, :]=1

<pre>
refcal['flag'][11]=1
</pre>

If satisfied with the results (by looking at the plots), we can go ahead and send them to the SQL database
<pre>
import cal_header as ch
ch.refcal2sql(refcal)
</pre>

To retrieve the refcal data back from SQL database based on, e.g., a solar data one wish to calibrate. We can provide a time:
<pre>
t=Time('2017-04-07T19:40')
refcal=ra.sql2refcal(t)
</pre>
The resulted refcal have three keys: 'amp' (15 x 2 x 34 array), 'pha' (15 x 2 x 34 array), and 'timestamp' (in jd). The refcal data found will be the closest one PRIOR to the supplied observation time.

== Updating the Reference Calibrations Table ==
The table below lists the known good reference calibrations. To facilitate adding entries to this table, do the following, where the time is after the desired refcal, but before any later refcal:
<pre>
t=Time('2017-06-23T19:40') # retrieves the refcal at 13:07 UT on that day
refcal=ra.sql2refcal(t)
ra.graph_results(refcal, savefigs=True)
</pre>
This will create summary plots of the amplitude and phase, will write the two corresponding *.png files into the /common/webplots/refcal folder, and will print as a text string the lines needed to add an entry. Just cut from the terminal and paste into the wiki editor at the appropriate place to preserve time order.

== List of Analyzed Reference Calibrations ==

{| class="wikitable" style="text-align: center; width: 800px; height: 200px;"
|-
| Date || Timestamp || Source || Obs Trange || Scan Idx || Avg Trange || Bands || Phase Plot || Amp Plot || Comments
|-
| 2017/04/02 || 06:36:50 || 3c273 || 04:20~11:00 || All || 05:47~07:26 || 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 || [[:File:20170402_refcal_pha.png|Phase]] || [[:File:20170402_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 11:38:17.
|-
| 2017/04/04 || 09:32:50 || 3c273 || 04:43~10:57 || All || 08:46~10:19 || 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 || [[:File:20170404_refcal_pha.png|Phase]] || [[:File:20170404_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 16:43:51.
|-
| 2017/04/05 ||06:44:10 || 3c273 || 04:17~10:30 || All || 04:27~09:34 || 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 || [[:File:20170405_refcal_pha.png|Phase]] || [[:File:20170405_refcal_amp.png|Amp]] || Ant 12 was not tracking.
|-
| 2017/04/06 || 09:54:50|| 3c273 || 04:14~10:49 || All || 05:39~08:11 || 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 || [[:File:20170406_refcal_pha.png|Phase]] || [[:File:20170406_refcal_amp.png|Amp]] || Ant 12 was not tracking.
|-
| 2017/04/07 || 08:30:51|| 3c273 || 04:00~10:30 || 1, 3, 5, 7, 9, 11, 13, 15, 17 || 07:53~09:10 || 5~34 || [[:File:20170407_refcal_pha.png|Phase]] || [[:File:20170407_refcal_amp.png|Amp]] || Ant 12 was not tracking.
|-
| 2017/04/08 || 06:14:51 || 3c273 || 05:00~10:30 || 1, 3, 5, 7, 9, 11, 13 || 05:00~07:00 || 5~34 || [[:File:20170408_refcal_pha.png|Phase]] || [[:File:20170408_refcal_amp.png|Amp]] || Ant 12 was not tracking. Ant 13 not working. Delay center change at 2017-04-08T03:12:26. Another refcal record is added at 2017-04-09T06:14:45.
|-
| 2017/04/10 || 06:57:10 || 3c273 || 04:30~10:30 || 2, 6, 8 || || 5~34 || [[:File:20170410_refcal_pha.png|Phase]] || [[:File:20170410_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 2017-04-08 13:20:39.
|-
| 2017/04/13 || 13:48:39 || 2136+006 || || 0 || || 5~23 || [http://ovsa.njit.edu/refcal/20170413_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170413_refcal_amp.png Amp] ||
|-
| 2017/04/16 || 06:36:48 || 3c273 || 03:00~11:00 || || 05:55~07:20 || 5~34 || [[:File:20170416_refcal_pha.png|Phase]] || [[:File:20170416_refcal_amp.png|Amp]] || Ant 12 was not tracking.
|-
| 2017/04/17 || 06:41:51 || 3c273 || 03:29~10:07 || All || 05:55~07:29 || 5~34 || [[:File:20170417_refcal_pha.png|Phase]] || [[:File:20170417_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 19:12:58.
|-
| 2017/04/26 || 08:06:52 || 3c273 || 02:50~09:28 || All || 07:21~08:57 || 5~34 || [[:File:20170426_refcal_pha.png|Phase]] || [[:File:20170426_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 04:37:28 and 11:51:26.
|-
| 2017/06/11 || 12:56:22 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170611_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170611_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/14 || 02:33:19 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170614_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170614_refcal_amp.png Amp] || No calibration for: Ant 8 Ant 12
|-
| 2017/06/14 || 13:01:19 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170614_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170614_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/15 || 13:05:48 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170615_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170615_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/16 || 13:05:48 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170616_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170616_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/20 || 13:06:26 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170620_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170620_refcal_amp.png Amp] || No calibration for: Ant 1 Ant 12
|-
| 2017/06/21 || 13:06:38 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170621_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170621_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/22 || 13:06:53 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170622_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170622_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/23 || 13:07:09 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170623_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170623_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/24 || 02:25:49 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170624_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170624_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/24 || 13:07:25 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170624_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170624_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/25 || 13:07:43 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170625_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170625_refcal_amp.png Amp] || No calibration for: Ant 10 Ant 12
|-
| 2017/06/26 || 13:15:47 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170626_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170626_refcal_amp.png Amp] || No calibration for: Ant 10 Ant 12
|-
| 2017/06/27 || 13:02:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170627_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170627_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/30 || 02:47:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170630_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170630_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/07/01 || 02:44:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170701_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170701_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/07/02 || 03:01:20 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170702_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170702_refcal_amp.png Amp] ||
|-
| 2017/07/03 || 02:47:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170703_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170703_refcal_amp.png Amp] || No calibration for: Ant 10
|-
| 2017/07/04 || 02:47:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170704_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170704_refcal_amp.png Amp] ||
|-
| 2017/07/05 || 02:55:19 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170705_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170705_refcal_amp.png Amp] ||
|-
| 2017/07/06 || 02:47:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170706_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170706_refcal_amp.png Amp] ||
|-
| 2017/07/07 || 13:12:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170707_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170707_refcal_amp.png Amp] ||
|-
| 2017/07/09 || 02:35:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170709_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170709_refcal_amp.png Amp] ||
|-
| 2017/07/09 || 13:16:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170709_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170709_refcal_amp.png Amp] ||
|-
| 2017/07/10 || 13:14:17 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170710_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170710_refcal_amp.png Amp] ||
|-
| 2017/07/11 || 13:14:18 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170711_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170711_refcal_amp.png Amp] ||
|-
| 2017/07/12 || 13:14:24 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170712_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170712_refcal_amp.png Amp] ||
|-
| 2017/07/13 || 13:14:59 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170713_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170713_refcal_amp.png Amp] ||
|-
| 2017/07/14 || 13:15:35 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170714_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170714_refcal_amp.png Amp] ||
|-
| 2017/07/16 || 02:48:33 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170716_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170716_refcal_amp.png Amp] ||
|-
| 2017/07/16 || 13:16:48 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170716_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170716_refcal_amp.png Amp] ||
|-
| 2017/07/17 || 13:14:54 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170717_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170717_refcal_amp.png Amp] ||
|-
| 2017/07/18 || 13:15:31 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170718_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170718_refcal_amp.png Amp] ||
|-
| 2017/07/19 || 13:16:16 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170719_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170719_refcal_amp.png Amp] ||
|-
| 2017/07/20 || 13:16:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170720_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170720_refcal_amp.png Amp] || No calibration for: Ant 10
|-
| 2017/07/21 || 13:20:57 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170721_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170721_refcal_amp.png Amp] ||
|-
| 2017/07/22 || 13:21:36 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170722_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170722_refcal_amp.png Amp] ||
|-
| 2017/07/23 || 13:34:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170723_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170723_refcal_amp.png Amp] ||
|-
| 2017/07/24 || 13:22:58 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170724_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170724_refcal_amp.png Amp] ||
|-
| 2017/07/25 || 13:23:38 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170725_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170725_refcal_amp.png Amp] ||
|-
| 2017/07/26 || 18:00:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170726_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170726_refcal_amp.png Amp] ||
|-
| 2017/07/28 || 02:42:36 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170728_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170728_refcal_amp.png Amp] ||
|-
| 2017/07/29 || 13:37:40 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170729_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170729_refcal_amp.png Amp] ||
|-
| 2017/07/31 || 13:27:05 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170731_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170731_refcal_amp.png Amp] ||
|-
| 2017/08/01 || 13:28:30 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170801_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170801_refcal_amp.png Amp] ||
|-
| 2017/08/02 || 13:29:13 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170802_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170802_refcal_amp.png Amp] ||
|-
| 2017/08/03 || 13:29:59 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170803_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170803_refcal_amp.png Amp] ||
|-
| 2017/08/05 || 02:35:58 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170805_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170805_refcal_amp.png Amp] ||
|-
| 2017/08/05 || 13:31:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170805_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170805_refcal_amp.png Amp] ||
|-
| 2017/08/06 || 13:32:06 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170806_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170806_refcal_amp.png Amp] ||
|-
| 2017/08/07 || 13:32:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170807_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170807_refcal_amp.png Amp] ||
|-
| 2017/08/08 || 13:33:33 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170808_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170808_refcal_amp.png Amp] ||
|-
| 2017/08/11 || 12:47:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170811_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170811_refcal_amp.png Amp] ||
|-
| 2017/08/12 || 12:43:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170812_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170812_refcal_amp.png Amp] || No calibration for: Ant 9
|-
| 2017/08/13 || 12:39:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170813_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170813_refcal_amp.png Amp] ||
|-
| 2017/08/14 || 12:34:19 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170814_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170814_refcal_amp.png Amp] ||
|-
| 2017/08/15 || 12:31:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170815_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170815_refcal_amp.png Amp] ||
|-
| 2017/08/16 || 12:27:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170816_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170816_refcal_amp.png Amp] ||
|-
| 2017/08/17 || 12:23:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170817_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170817_refcal_amp.png Amp] ||
|-
| 2017/08/18 || 12:19:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170818_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170818_refcal_amp.png Amp] ||
|-
| 2017/08/19 || 12:15:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170819_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170819_refcal_amp.png Amp] ||
|-
| 2017/08/21 || 12:07:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170821_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170821_refcal_amp.png Amp] ||
|-
| 2017/08/22 || 12:03:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170822_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170822_refcal_amp.png Amp] ||
|-
| 2017/08/23 || 12:14:51 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170823_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170823_refcal_amp.png Amp] ||
|-
| 2017/08/24 || 11:55:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170824_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170824_refcal_amp.png Amp] ||
|-
| 2017/08/25 || 14:01:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170825_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170825_refcal_amp.png Amp] ||
|-
| 2017/08/26 || 13:57:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170826_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170826_refcal_amp.png Amp] ||
|-
| 2017/08/28 || 01:03:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170828_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170828_refcal_amp.png Amp] ||
|-
| 2017/08/29 || 00:59:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170829_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170829_refcal_amp.png Amp] ||
|-
| 2017/08/29 || 13:49:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170829_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170829_refcal_amp.png Amp] ||
|-
| 2017/08/30 || 13:49:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170830_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170830_refcal_amp.png Amp] ||
|-
| 2017/08/31 || 13:50:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170831_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170831_refcal_amp.png Amp] ||
|-
| 2017/09/01 || 13:51:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170901_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170901_refcal_amp.png Amp] ||
|-
| 2017/09/02 || 13:52:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170902_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170902_refcal_amp.png Amp] ||
|-
| 2017/09/03 || 13:53:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170903_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170903_refcal_amp.png Amp] ||
|-
| 2017/09/04 || 13:54:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170904_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170904_refcal_amp.png Amp] ||
|-
| 2017/09/05 || 13:54:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170905_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170905_refcal_amp.png Amp] ||
|-
| 2017/09/06 || 13:55:58 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170906_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170906_refcal_amp.png Amp] ||
|-
| 2017/09/07 || 13:56:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170907_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170907_refcal_amp.png Amp] ||
|-
| 2017/09/08 || 13:56:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170908_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170908_refcal_amp.png Amp] ||
|-
| 2017/09/10 || 00:01:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170910_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170910_refcal_amp.png Amp] ||
|-
| 2017/09/10 || 13:57:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170910_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170910_refcal_amp.png Amp] ||
|-
| 2017/09/11 || 13:58:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170911_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170911_refcal_amp.png Amp] ||
|-
| 2017/09/12 || 14:00:11 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170912_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170912_refcal_amp.png Amp] ||
|-
| 2017/09/14 || 04:15:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170914_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170914_refcal_amp.png Amp] ||Refcal at around 14 UT is also good.
|-
| 2017/09/14 || 14:01:48 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170914_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170914_refcal_amp.png Amp] ||
|-
| 2017/09/15 || 14:39:27 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170915_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170915_refcal_amp.png Amp] ||
|-
| 2017/09/16 || 13:46:56 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170916_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170916_refcal_amp.png Amp] ||
|-
| 2017/09/17 || 13:47:46 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170917_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170917_refcal_amp.png Amp] ||
|-
| 2017/09/18 || 14:05:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170918_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170918_refcal_amp.png Amp] ||
|-
| 2017/09/19 || 14:06:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170919_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170919_refcal_amp.png Amp] ||
|-
| 2017/09/22 || 14:08:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170922_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170922_refcal_amp.png Amp] ||
|-
| 2017/09/23 || 14:09:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170923_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170923_refcal_amp.png Amp] ||
|-
| 2017/09/24 || 14:10:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170924_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170924_refcal_amp.png Amp] ||
|-
| 2017/09/25 || 14:17:33 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170925_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170925_refcal_amp.png Amp] ||
|-
| 2017/09/26 || 14:10:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170926_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170926_refcal_amp.png Amp] ||
|-
| 2017/09/27 || 14:06:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170927_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170927_refcal_amp.png Amp] ||
|-
| 2017/09/28 || 14:02:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170928_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170928_refcal_amp.png Amp] ||
|-
| 2017/09/29 || 14:01:20 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170929_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170929_refcal_amp.png Amp] ||
|-
| 2017/09/30 || 13:54:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170930_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170930_refcal_amp.png Amp] ||
|-
| 2017/10/01 || 13:50:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171001_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171001_refcal_amp.png Amp] ||
|-
| 2017/10/02 || 13:47:28 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171002_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171002_refcal_amp.png Amp] ||
|-
| 2017/10/03 || 13:43:25 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171003_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171003_refcal_amp.png Amp] ||
|-
| 2017/10/04 || 13:40:52 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171004_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171004_refcal_amp.png Amp] || No calibration for: Ant 10
|-
| 2017/10/06 || 02:42:39 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171006_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171006_refcal_amp.png Amp] ||
|-
| 2017/10/06 || 13:32:53 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171006_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171006_refcal_amp.png Amp] ||
|-
| 2017/10/07 || 13:30:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171007_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171007_refcal_amp.png Amp] ||
|-
| 2017/10/08 || 13:26:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171008_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171008_refcal_amp.png Amp] ||
|-
| 2017/10/10 || 02:31:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171010_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171010_refcal_amp.png Amp] ||
|-
| 2017/10/11 || 02:23:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171011_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171011_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/12 || 02:19:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171012_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171012_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/13 || 02:15:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171013_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171013_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/13 || 12:54:23 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171013_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171013_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/14 || 12:50:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171014_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171014_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/16 || 02:07:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171016_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171016_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/18 || 01:59:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171018_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171018_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/19 || 12:30:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171019_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171019_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/20 || 12:22:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171021_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171021_refcal_amp.png Amp] ||
|-
| 2017/10/21 || 12:22:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171021_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171021_refcal_amp.png Amp] ||
|-
| 2017/10/22 || 12:18:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171022_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171022_refcal_amp.png Amp] ||
|-
| 2017/10/24 || 12:10:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171024_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171024_refcal_amp.png Amp] || Few frequencies have unusually high amplitudes.
|-
| 2017/10/24 || 01:35:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171024_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171024_refcal_amp.png Amp] ||
|-
| 2017/10/25 || 01:31:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171025_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171025_refcal_amp.png Amp] ||
|-
| 2017/10/26 || 12:02:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171026_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171026_refcal_amp.png Amp] ||
|-
| 2017/10/27 || 11:58:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171027_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171027_refcal_amp.png Amp] ||
|-
| 2017/10/28 || 11:54:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171028_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171028_refcal_amp.png Amp] ||
|-
| 2017/10/29 || 11:50:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171029_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171029_refcal_amp.png Amp] || Ant 8 was down.
|-
| 2017/11/02 || 14:50:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171102_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171102_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/03 || 14:52:20 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171103_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171103_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/04 || 14:53:51 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171104_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171104_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/05 || 14:54:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171105_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171105_refcal_amp.png Amp] || Ant 3 was down. No calibration for: Ant 3
|-
| 2017/11/07 || 00:39:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171107_00_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171107_00_refcal_amp.png Amp] ||
|-
| 2017/11/07 || 14:56:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171107_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171107_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/08 || 14:57:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171108_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171108_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/09 || 14:58:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171109_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171109_refcal_amp.png Amp] || No calibration for: Ant 3
|-

Reference Gain Calibration

2017-11-10T18:05:25Z

Nkuroda: /* List of Analyzed Reference Calibrations */

Reference complex gain calibration refers to determining the "system" amplitude and phase with high precision as a function of IF band (i.e. integrated over each 500 MHz IF band). A typical reference calibration would cover 34 bands, 2 polarizations, and 13 antennas. The routines (on pipeline machine) to retrieve and analyze the data are in the module refcal_anal.py. Start from a time range during which the reference calibration observation occurred (check the [http://ovsa.njit.edu/phasecal/ phasecal results] to see which 1-hr scan had stable phases)

<pre>
import refcal_anal as ra
from util import Time
#example time range of the refcal scan that took place BEFORE the observation
trange=Time(['2017-04-08T14:00','2017-04-08T15:00'])
</pre>



Now read the data from that timerange
<pre>
out=ra.rd_refcal(trange)
</pre>
Note that there are optional arguments that can be given, such as projid='PHASECAL' (the default) and srcid='1229+060', but these are generally not needed.

To correct for differential feed rotation (for refcal data after 05:00 UT on 2017-Jul-01), you can use:
<pre>
out_corr = ra.unrot_refcal(out)
</pre>

Take a look at the phases (averaged over each band):
<pre>
ra.graph(out_corr)
</pre>
By default it displays only bands 5, 11, 17, 23 and polarization XX. To change the bands and polarization to display, use the "bandplt" and 'pol' parameters (better to check more bands).
<pre>
ra.graph(out_corr, bandplt=[5,13,19,25], pol=1)
</pre>



Observations within this time range will be used for averaging to get the reference phases/amplitudes. Data will be flagged if the SNR is less than minsnr, which can be supplied. The default minsnr is set to 1.0. We can further determine a finer selection of time range within this scan that has clean and stable phases if needed, by setting the new timerange in "trange" below.

<pre>
refcal=ra.refcal_anal(out_corr,timerange=trange,scanidx=[0])
</pre>

It will generate four plots. First and second are phases and amplitudes of the data similar as those produced by ra.graph(), but with the selected time range for averaging highlighted (one can use "bandplt" and "pol" to choose bands and polarization to display as well). The 3rd plot is the averaged phase vs. frequency and the 4th is the averaged amplitude vs. frequency. Those data will be our "analyzed" reference calibration data saved in the returned dictionary (named "refcal" here). The dictionary contains the actual complex values (refcal['refcal']), a flag array with the same shape (refcal['flag']), and some timestamps, e.g., refcal['t_mid'] is the middle of the time range used for averaging. Both refcal['refcal'] and refcal['flag'] have a shape of (15, 2, 34) -- which corresponds to # of antennas, # of polarizations, and # of bands.

If you determine some antenna, band, polarization need to be flagged/unflagged, they have to be manually changed in the returned refcal['flag'] array. In this example, Antenna 12 was not tracking, and the algorithm did not pick up all of them, so we have to do this manually -- setting refcal['flag'][11, :, :]=1

<pre>
refcal['flag'][11]=1
</pre>

If satisfied with the results (by looking at the plots), we can go ahead and send them to the SQL database
<pre>
import cal_header as ch
ch.refcal2sql(refcal)
</pre>

To retrieve the refcal data back from SQL database based on, e.g., a solar data one wish to calibrate. We can provide a time:
<pre>
t=Time('2017-04-07T19:40')
refcal=ra.sql2refcal(t)
</pre>
The resulted refcal have three keys: 'amp' (15 x 2 x 34 array), 'pha' (15 x 2 x 34 array), and 'timestamp' (in jd). The refcal data found will be the closest one PRIOR to the supplied observation time.

== Updating the Reference Calibrations Table ==
The table below lists the known good reference calibrations. To facilitate adding entries to this table, do the following, where the time is after the desired refcal, but before any later refcal:
<pre>
t=Time('2017-06-23T19:40') # retrieves the refcal at 13:07 UT on that day
refcal=ra.sql2refcal(t)
ra.graph_results(refcal, savefigs=True)
</pre>
This will create summary plots of the amplitude and phase, will write the two corresponding *.png files into the /common/webplots/refcal folder, and will print as a text string the lines needed to add an entry. Just cut from the terminal and paste into the wiki editor at the appropriate place to preserve time order.

== List of Analyzed Reference Calibrations ==

{| class="wikitable" style="text-align: center; width: 800px; height: 200px;"
|-
| Date || Timestamp || Source || Obs Trange || Scan Idx || Avg Trange || Bands || Phase Plot || Amp Plot || Comments
|-
| 2017/04/02 || 06:36:50 || 3c273 || 04:20~11:00 || All || 05:47~07:26 || 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 || [[:File:20170402_refcal_pha.png|Phase]] || [[:File:20170402_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 11:38:17.
|-
| 2017/04/04 || 09:32:50 || 3c273 || 04:43~10:57 || All || 08:46~10:19 || 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 || [[:File:20170404_refcal_pha.png|Phase]] || [[:File:20170404_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 16:43:51.
|-
| 2017/04/05 ||06:44:10 || 3c273 || 04:17~10:30 || All || 04:27~09:34 || 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 || [[:File:20170405_refcal_pha.png|Phase]] || [[:File:20170405_refcal_amp.png|Amp]] || Ant 12 was not tracking.
|-
| 2017/04/06 || 09:54:50|| 3c273 || 04:14~10:49 || All || 05:39~08:11 || 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 || [[:File:20170406_refcal_pha.png|Phase]] || [[:File:20170406_refcal_amp.png|Amp]] || Ant 12 was not tracking.
|-
| 2017/04/07 || 08:30:51|| 3c273 || 04:00~10:30 || 1, 3, 5, 7, 9, 11, 13, 15, 17 || 07:53~09:10 || 5~34 || [[:File:20170407_refcal_pha.png|Phase]] || [[:File:20170407_refcal_amp.png|Amp]] || Ant 12 was not tracking.
|-
| 2017/04/08 || 06:14:51 || 3c273 || 05:00~10:30 || 1, 3, 5, 7, 9, 11, 13 || 05:00~07:00 || 5~34 || [[:File:20170408_refcal_pha.png|Phase]] || [[:File:20170408_refcal_amp.png|Amp]] || Ant 12 was not tracking. Ant 13 not working. Delay center change at 2017-04-08T03:12:26. Another refcal record is added at 2017-04-09T06:14:45.
|-
| 2017/04/10 || 06:57:10 || 3c273 || 04:30~10:30 || 2, 6, 8 || || 5~34 || [[:File:20170410_refcal_pha.png|Phase]] || [[:File:20170410_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 2017-04-08 13:20:39.
|-
| 2017/04/13 || 13:48:39 || 2136+006 || || 0 || || 5~23 || [http://ovsa.njit.edu/refcal/20170413_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170413_refcal_amp.png Amp] ||
|-
| 2017/04/16 || 06:36:48 || 3c273 || 03:00~11:00 || || 05:55~07:20 || 5~34 || [[:File:20170416_refcal_pha.png|Phase]] || [[:File:20170416_refcal_amp.png|Amp]] || Ant 12 was not tracking.
|-
| 2017/04/17 || 06:41:51 || 3c273 || 03:29~10:07 || All || 05:55~07:29 || 5~34 || [[:File:20170417_refcal_pha.png|Phase]] || [[:File:20170417_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 19:12:58.
|-
| 2017/04/26 || 08:06:52 || 3c273 || 02:50~09:28 || All || 07:21~08:57 || 5~34 || [[:File:20170426_refcal_pha.png|Phase]] || [[:File:20170426_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 04:37:28 and 11:51:26.
|-
| 2017/06/11 || 12:56:22 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170611_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170611_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/14 || 02:33:19 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170614_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170614_refcal_amp.png Amp] || No calibration for: Ant 8 Ant 12
|-
| 2017/06/14 || 13:01:19 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170614_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170614_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/15 || 13:05:48 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170615_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170615_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/16 || 13:05:48 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170616_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170616_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/20 || 13:06:26 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170620_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170620_refcal_amp.png Amp] || No calibration for: Ant 1 Ant 12
|-
| 2017/06/21 || 13:06:38 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170621_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170621_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/22 || 13:06:53 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170622_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170622_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/23 || 13:07:09 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170623_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170623_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/24 || 02:25:49 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170624_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170624_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/24 || 13:07:25 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170624_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170624_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/25 || 13:07:43 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170625_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170625_refcal_amp.png Amp] || No calibration for: Ant 10 Ant 12
|-
| 2017/06/26 || 13:15:47 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170626_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170626_refcal_amp.png Amp] || No calibration for: Ant 10 Ant 12
|-
| 2017/06/27 || 13:02:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170627_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170627_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/30 || 02:47:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170630_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170630_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/07/01 || 02:44:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170701_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170701_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/07/02 || 03:01:20 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170702_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170702_refcal_amp.png Amp] ||
|-
| 2017/07/03 || 02:47:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170703_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170703_refcal_amp.png Amp] || No calibration for: Ant 10
|-
| 2017/07/04 || 02:47:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170704_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170704_refcal_amp.png Amp] ||
|-
| 2017/07/05 || 02:55:19 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170705_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170705_refcal_amp.png Amp] ||
|-
| 2017/07/06 || 02:47:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170706_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170706_refcal_amp.png Amp] ||
|-
| 2017/07/07 || 13:12:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170707_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170707_refcal_amp.png Amp] ||
|-
| 2017/07/09 || 02:35:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170709_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170709_refcal_amp.png Amp] ||
|-
| 2017/07/09 || 13:16:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170709_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170709_refcal_amp.png Amp] ||
|-
| 2017/07/10 || 13:14:17 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170710_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170710_refcal_amp.png Amp] ||
|-
| 2017/07/11 || 13:14:18 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170711_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170711_refcal_amp.png Amp] ||
|-
| 2017/07/12 || 13:14:24 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170712_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170712_refcal_amp.png Amp] ||
|-
| 2017/07/13 || 13:14:59 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170713_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170713_refcal_amp.png Amp] ||
|-
| 2017/07/14 || 13:15:35 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170714_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170714_refcal_amp.png Amp] ||
|-
| 2017/07/16 || 02:48:33 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170716_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170716_refcal_amp.png Amp] ||
|-
| 2017/07/16 || 13:16:48 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170716_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170716_refcal_amp.png Amp] ||
|-
| 2017/07/17 || 13:14:54 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170717_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170717_refcal_amp.png Amp] ||
|-
| 2017/07/18 || 13:15:31 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170718_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170718_refcal_amp.png Amp] ||
|-
| 2017/07/19 || 13:16:16 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170719_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170719_refcal_amp.png Amp] ||
|-
| 2017/07/20 || 13:16:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170720_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170720_refcal_amp.png Amp] || No calibration for: Ant 10
|-
| 2017/07/21 || 13:20:57 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170721_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170721_refcal_amp.png Amp] ||
|-
| 2017/07/22 || 13:21:36 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170722_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170722_refcal_amp.png Amp] ||
|-
| 2017/07/23 || 13:34:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170723_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170723_refcal_amp.png Amp] ||
|-
| 2017/07/24 || 13:22:58 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170724_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170724_refcal_amp.png Amp] ||
|-
| 2017/07/25 || 13:23:38 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170725_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170725_refcal_amp.png Amp] ||
|-
| 2017/07/26 || 18:00:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170726_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170726_refcal_amp.png Amp] ||
|-
| 2017/07/28 || 02:42:36 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170728_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170728_refcal_amp.png Amp] ||
|-
| 2017/07/29 || 13:37:40 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170729_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170729_refcal_amp.png Amp] ||
|-
| 2017/07/31 || 13:27:05 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170731_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170731_refcal_amp.png Amp] ||
|-
| 2017/08/01 || 13:28:30 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170801_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170801_refcal_amp.png Amp] ||
|-
| 2017/08/02 || 13:29:13 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170802_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170802_refcal_amp.png Amp] ||
|-
| 2017/08/03 || 13:29:59 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170803_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170803_refcal_amp.png Amp] ||
|-
| 2017/08/05 || 02:35:58 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170805_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170805_refcal_amp.png Amp] ||
|-
| 2017/08/05 || 13:31:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170805_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170805_refcal_amp.png Amp] ||
|-
| 2017/08/06 || 13:32:06 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170806_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170806_refcal_amp.png Amp] ||
|-
| 2017/08/07 || 13:32:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170807_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170807_refcal_amp.png Amp] ||
|-
| 2017/08/08 || 13:33:33 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170808_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170808_refcal_amp.png Amp] ||
|-
| 2017/08/11 || 12:47:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170811_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170811_refcal_amp.png Amp] ||
|-
| 2017/08/12 || 12:43:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170812_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170812_refcal_amp.png Amp] || No calibration for: Ant 9
|-
| 2017/08/13 || 12:39:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170813_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170813_refcal_amp.png Amp] ||
|-
| 2017/08/14 || 12:34:19 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170814_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170814_refcal_amp.png Amp] ||
|-
| 2017/08/15 || 12:31:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170815_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170815_refcal_amp.png Amp] ||
|-
| 2017/08/16 || 12:27:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170816_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170816_refcal_amp.png Amp] ||
|-
| 2017/08/17 || 12:23:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170817_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170817_refcal_amp.png Amp] ||
|-
| 2017/08/18 || 12:19:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170818_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170818_refcal_amp.png Amp] ||
|-
| 2017/08/19 || 12:15:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170819_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170819_refcal_amp.png Amp] ||
|-
| 2017/08/21 || 12:07:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170821_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170821_refcal_amp.png Amp] ||
|-
| 2017/08/22 || 12:03:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170822_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170822_refcal_amp.png Amp] ||
|-
| 2017/08/23 || 12:14:51 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170823_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170823_refcal_amp.png Amp] ||
|-
| 2017/08/24 || 11:55:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170824_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170824_refcal_amp.png Amp] ||
|-
| 2017/08/25 || 14:01:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170825_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170825_refcal_amp.png Amp] ||
|-
| 2017/08/26 || 13:57:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170826_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170826_refcal_amp.png Amp] ||
|-
| 2017/08/28 || 01:03:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170828_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170828_refcal_amp.png Amp] ||
|-
| 2017/08/29 || 00:59:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170829_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170829_refcal_amp.png Amp] ||
|-
| 2017/08/29 || 13:49:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170829_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170829_refcal_amp.png Amp] ||
|-
| 2017/08/30 || 13:49:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170830_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170830_refcal_amp.png Amp] ||
|-
| 2017/08/31 || 13:50:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170831_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170831_refcal_amp.png Amp] ||
|-
| 2017/09/01 || 13:51:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170901_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170901_refcal_amp.png Amp] ||
|-
| 2017/09/02 || 13:52:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170902_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170902_refcal_amp.png Amp] ||
|-
| 2017/09/03 || 13:53:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170903_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170903_refcal_amp.png Amp] ||
|-
| 2017/09/04 || 13:54:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170904_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170904_refcal_amp.png Amp] ||
|-
| 2017/09/05 || 13:54:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170905_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170905_refcal_amp.png Amp] ||
|-
| 2017/09/06 || 13:55:58 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170906_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170906_refcal_amp.png Amp] ||
|-
| 2017/09/07 || 13:56:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170907_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170907_refcal_amp.png Amp] ||
|-
| 2017/09/08 || 13:56:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170908_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170908_refcal_amp.png Amp] ||
|-
| 2017/09/10 || 00:01:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170910_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170910_refcal_amp.png Amp] ||
|-
| 2017/09/10 || 13:57:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170910_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170910_refcal_amp.png Amp] ||
|-
| 2017/09/11 || 13:58:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170911_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170911_refcal_amp.png Amp] ||
|-
| 2017/09/12 || 14:00:11 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170912_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170912_refcal_amp.png Amp] ||
|-
| 2017/09/14 || 04:15:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170914_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170914_refcal_amp.png Amp] ||Refcal at around 14 UT is also good.
|-
| 2017/09/14 || 14:01:48 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170914_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170914_refcal_amp.png Amp] ||
|-
| 2017/09/15 || 14:39:27 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170915_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170915_refcal_amp.png Amp] ||
|-
| 2017/09/16 || 13:46:56 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170916_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170916_refcal_amp.png Amp] ||
|-
| 2017/09/17 || 13:47:46 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170917_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170917_refcal_amp.png Amp] ||
|-
| 2017/09/18 || 14:05:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170918_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170918_refcal_amp.png Amp] ||
|-
| 2017/09/19 || 14:06:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170919_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170919_refcal_amp.png Amp] ||
|-
| 2017/09/22 || 14:08:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170922_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170922_refcal_amp.png Amp] ||
|-
| 2017/09/23 || 14:09:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170923_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170923_refcal_amp.png Amp] ||
|-
| 2017/09/24 || 14:10:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170924_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170924_refcal_amp.png Amp] ||
|-
| 2017/09/25 || 14:17:33 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170925_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170925_refcal_amp.png Amp] ||
|-
| 2017/09/26 || 14:10:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170926_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170926_refcal_amp.png Amp] ||
|-
| 2017/09/27 || 14:06:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170927_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170927_refcal_amp.png Amp] ||
|-
| 2017/09/28 || 14:02:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170928_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170928_refcal_amp.png Amp] ||
|-
| 2017/09/29 || 14:01:20 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170929_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170929_refcal_amp.png Amp] ||
|-
| 2017/09/30 || 13:54:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170930_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170930_refcal_amp.png Amp] ||
|-
| 2017/10/01 || 13:50:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171001_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171001_refcal_amp.png Amp] ||
|-
| 2017/10/02 || 13:47:28 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171002_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171002_refcal_amp.png Amp] ||
|-
| 2017/10/03 || 13:43:25 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171003_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171003_refcal_amp.png Amp] ||
|-
| 2017/10/04 || 13:40:52 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171004_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171004_refcal_amp.png Amp] || No calibration for: Ant 10
|-
| 2017/10/06 || 02:42:39 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171006_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171006_refcal_amp.png Amp] ||
|-
| 2017/10/06 || 13:32:53 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171006_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171006_refcal_amp.png Amp] ||
|-
| 2017/10/07 || 13:30:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171007_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171007_refcal_amp.png Amp] ||
|-
| 2017/10/08 || 13:26:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171008_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171008_refcal_amp.png Amp] ||
|-
| 2017/10/10 || 02:31:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171010_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171010_refcal_amp.png Amp] ||
|-
| 2017/10/11 || 02:23:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171011_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171011_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/12 || 02:19:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171012_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171012_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/13 || 02:15:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171013_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171013_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/13 || 12:54:23 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171013_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171013_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/14 || 12:50:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171014_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171014_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/16 || 02:07:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171016_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171016_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/18 || 01:59:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171018_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171018_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/19 || 12:30:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171019_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171019_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/20 || 12:22:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171021_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171021_refcal_amp.png Amp] ||
|-
| 2017/10/21 || 12:22:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171021_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171021_refcal_amp.png Amp] ||
|-
| 2017/10/22 || 12:18:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171022_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171022_refcal_amp.png Amp] ||
|-
| 2017/10/24 || 12:10:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171024_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171024_refcal_amp.png Amp] || Few frequencies have unusually high amplitudes.
|-
| 2017/10/24 || 01:35:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171024_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171024_refcal_amp.png Amp] ||
|-
| 2017/10/25 || 01:31:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171025_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171025_refcal_amp.png Amp] ||
|-
| 2017/10/26 || 12:02:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171026_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171026_refcal_amp.png Amp] ||
|-
| 2017/10/27 || 11:58:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171027_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171027_refcal_amp.png Amp] ||
|-
| 2017/10/28 || 11:54:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171028_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171028_refcal_amp.png Amp] ||
|-
| 2017/10/29 || 11:50:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171029_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171029_refcal_amp.png Amp] || Ant 8 was down.
|-
| 2017/11/02 || 14:50:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171102_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171102_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/03 || 14:52:20 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171103_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171103_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/04 || 14:53:51 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171104_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171104_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/05 || 14:54:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171105_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171105_refcal_amp.png Amp] || Ant 3 was down. No calibration for: Ant 3
|-
| 2017/11/07 || 00:39:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171107_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171107_refcal_amp.png Amp] ||
|-
| 2017/11/07 || 14:56:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171107_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171107_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/08 || 14:57:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171108_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171108_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/09 || 14:58:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171109_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171109_refcal_amp.png Amp] || No calibration for: Ant 3
|-

Reference Gain Calibration

2017-11-10T02:48:27Z

Nkuroda: /* List of Analyzed Reference Calibrations */

Reference complex gain calibration refers to determining the "system" amplitude and phase with high precision as a function of IF band (i.e. integrated over each 500 MHz IF band). A typical reference calibration would cover 34 bands, 2 polarizations, and 13 antennas. The routines (on pipeline machine) to retrieve and analyze the data are in the module refcal_anal.py. Start from a time range during which the reference calibration observation occurred (check the [http://ovsa.njit.edu/phasecal/ phasecal results] to see which 1-hr scan had stable phases)

<pre>
import refcal_anal as ra
from util import Time
#example time range of the refcal scan that took place BEFORE the observation
trange=Time(['2017-04-08T14:00','2017-04-08T15:00'])
</pre>



Now read the data from that timerange
<pre>
out=ra.rd_refcal(trange)
</pre>
Note that there are optional arguments that can be given, such as projid='PHASECAL' (the default) and srcid='1229+060', but these are generally not needed.

To correct for differential feed rotation (for refcal data after 05:00 UT on 2017-Jul-01), you can use:
<pre>
out_corr = ra.unrot_refcal(out)
</pre>

Take a look at the phases (averaged over each band):
<pre>
ra.graph(out_corr)
</pre>
By default it displays only bands 5, 11, 17, 23 and polarization XX. To change the bands and polarization to display, use the "bandplt" and 'pol' parameters (better to check more bands).
<pre>
ra.graph(out_corr, bandplt=[5,13,19,25], pol=1)
</pre>



Observations within this time range will be used for averaging to get the reference phases/amplitudes. Data will be flagged if the SNR is less than minsnr, which can be supplied. The default minsnr is set to 1.0. We can further determine a finer selection of time range within this scan that has clean and stable phases if needed, by setting the new timerange in "trange" below.

<pre>
refcal=ra.refcal_anal(out_corr,timerange=trange,scanidx=[0])
</pre>

It will generate four plots. First and second are phases and amplitudes of the data similar as those produced by ra.graph(), but with the selected time range for averaging highlighted (one can use "bandplt" and "pol" to choose bands and polarization to display as well). The 3rd plot is the averaged phase vs. frequency and the 4th is the averaged amplitude vs. frequency. Those data will be our "analyzed" reference calibration data saved in the returned dictionary (named "refcal" here). The dictionary contains the actual complex values (refcal['refcal']), a flag array with the same shape (refcal['flag']), and some timestamps, e.g., refcal['t_mid'] is the middle of the time range used for averaging. Both refcal['refcal'] and refcal['flag'] have a shape of (15, 2, 34) -- which corresponds to # of antennas, # of polarizations, and # of bands.

If you determine some antenna, band, polarization need to be flagged/unflagged, they have to be manually changed in the returned refcal['flag'] array. In this example, Antenna 12 was not tracking, and the algorithm did not pick up all of them, so we have to do this manually -- setting refcal['flag'][11, :, :]=1

<pre>
refcal['flag'][11]=1
</pre>

If satisfied with the results (by looking at the plots), we can go ahead and send them to the SQL database
<pre>
import cal_header as ch
ch.refcal2sql(refcal)
</pre>

To retrieve the refcal data back from SQL database based on, e.g., a solar data one wish to calibrate. We can provide a time:
<pre>
t=Time('2017-04-07T19:40')
refcal=ra.sql2refcal(t)
</pre>
The resulted refcal have three keys: 'amp' (15 x 2 x 34 array), 'pha' (15 x 2 x 34 array), and 'timestamp' (in jd). The refcal data found will be the closest one PRIOR to the supplied observation time.

== Updating the Reference Calibrations Table ==
The table below lists the known good reference calibrations. To facilitate adding entries to this table, do the following, where the time is after the desired refcal, but before any later refcal:
<pre>
t=Time('2017-06-23T19:40') # retrieves the refcal at 13:07 UT on that day
refcal=ra.sql2refcal(t)
ra.graph_results(refcal, savefigs=True)
</pre>
This will create summary plots of the amplitude and phase, will write the two corresponding *.png files into the /common/webplots/refcal folder, and will print as a text string the lines needed to add an entry. Just cut from the terminal and paste into the wiki editor at the appropriate place to preserve time order.

== List of Analyzed Reference Calibrations ==

{| class="wikitable" style="text-align: center; width: 800px; height: 200px;"
|-
| Date || Timestamp || Source || Obs Trange || Scan Idx || Avg Trange || Bands || Phase Plot || Amp Plot || Comments
|-
| 2017/04/02 || 06:36:50 || 3c273 || 04:20~11:00 || All || 05:47~07:26 || 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 || [[:File:20170402_refcal_pha.png|Phase]] || [[:File:20170402_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 11:38:17.
|-
| 2017/04/04 || 09:32:50 || 3c273 || 04:43~10:57 || All || 08:46~10:19 || 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 || [[:File:20170404_refcal_pha.png|Phase]] || [[:File:20170404_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 16:43:51.
|-
| 2017/04/05 ||06:44:10 || 3c273 || 04:17~10:30 || All || 04:27~09:34 || 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 || [[:File:20170405_refcal_pha.png|Phase]] || [[:File:20170405_refcal_amp.png|Amp]] || Ant 12 was not tracking.
|-
| 2017/04/06 || 09:54:50|| 3c273 || 04:14~10:49 || All || 05:39~08:11 || 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 || [[:File:20170406_refcal_pha.png|Phase]] || [[:File:20170406_refcal_amp.png|Amp]] || Ant 12 was not tracking.
|-
| 2017/04/07 || 08:30:51|| 3c273 || 04:00~10:30 || 1, 3, 5, 7, 9, 11, 13, 15, 17 || 07:53~09:10 || 5~34 || [[:File:20170407_refcal_pha.png|Phase]] || [[:File:20170407_refcal_amp.png|Amp]] || Ant 12 was not tracking.
|-
| 2017/04/08 || 06:14:51 || 3c273 || 05:00~10:30 || 1, 3, 5, 7, 9, 11, 13 || 05:00~07:00 || 5~34 || [[:File:20170408_refcal_pha.png|Phase]] || [[:File:20170408_refcal_amp.png|Amp]] || Ant 12 was not tracking. Ant 13 not working. Delay center change at 2017-04-08T03:12:26. Another refcal record is added at 2017-04-09T06:14:45.
|-
| 2017/04/10 || 06:57:10 || 3c273 || 04:30~10:30 || 2, 6, 8 || || 5~34 || [[:File:20170410_refcal_pha.png|Phase]] || [[:File:20170410_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 2017-04-08 13:20:39.
|-
| 2017/04/13 || 13:48:39 || 2136+006 || || 0 || || 5~23 || [http://ovsa.njit.edu/refcal/20170413_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170413_refcal_amp.png Amp] ||
|-
| 2017/04/16 || 06:36:48 || 3c273 || 03:00~11:00 || || 05:55~07:20 || 5~34 || [[:File:20170416_refcal_pha.png|Phase]] || [[:File:20170416_refcal_amp.png|Amp]] || Ant 12 was not tracking.
|-
| 2017/04/17 || 06:41:51 || 3c273 || 03:29~10:07 || All || 05:55~07:29 || 5~34 || [[:File:20170417_refcal_pha.png|Phase]] || [[:File:20170417_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 19:12:58.
|-
| 2017/04/26 || 08:06:52 || 3c273 || 02:50~09:28 || All || 07:21~08:57 || 5~34 || [[:File:20170426_refcal_pha.png|Phase]] || [[:File:20170426_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 04:37:28 and 11:51:26.
|-
| 2017/06/11 || 12:56:22 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170611_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170611_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/14 || 02:33:19 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170614_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170614_refcal_amp.png Amp] || No calibration for: Ant 8 Ant 12
|-
| 2017/06/14 || 13:01:19 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170614_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170614_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/15 || 13:05:48 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170615_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170615_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/16 || 13:05:48 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170616_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170616_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/20 || 13:06:26 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170620_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170620_refcal_amp.png Amp] || No calibration for: Ant 1 Ant 12
|-
| 2017/06/21 || 13:06:38 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170621_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170621_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/22 || 13:06:53 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170622_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170622_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/23 || 13:07:09 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170623_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170623_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/24 || 02:25:49 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170624_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170624_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/24 || 13:07:25 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170624_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170624_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/25 || 13:07:43 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170625_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170625_refcal_amp.png Amp] || No calibration for: Ant 10 Ant 12
|-
| 2017/06/26 || 13:15:47 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170626_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170626_refcal_amp.png Amp] || No calibration for: Ant 10 Ant 12
|-
| 2017/06/27 || 13:02:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170627_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170627_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/30 || 02:47:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170630_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170630_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/07/01 || 02:44:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170701_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170701_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/07/02 || 03:01:20 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170702_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170702_refcal_amp.png Amp] ||
|-
| 2017/07/03 || 02:47:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170703_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170703_refcal_amp.png Amp] || No calibration for: Ant 10
|-
| 2017/07/04 || 02:47:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170704_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170704_refcal_amp.png Amp] ||
|-
| 2017/07/05 || 02:55:19 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170705_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170705_refcal_amp.png Amp] ||
|-
| 2017/07/06 || 02:47:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170706_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170706_refcal_amp.png Amp] ||
|-
| 2017/07/07 || 13:12:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170707_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170707_refcal_amp.png Amp] ||
|-
| 2017/07/09 || 02:35:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170709_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170709_refcal_amp.png Amp] ||
|-
| 2017/07/09 || 13:16:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170709_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170709_refcal_amp.png Amp] ||
|-
| 2017/07/10 || 13:14:17 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170710_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170710_refcal_amp.png Amp] ||
|-
| 2017/07/11 || 13:14:18 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170711_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170711_refcal_amp.png Amp] ||
|-
| 2017/07/12 || 13:14:24 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170712_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170712_refcal_amp.png Amp] ||
|-
| 2017/07/13 || 13:14:59 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170713_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170713_refcal_amp.png Amp] ||
|-
| 2017/07/14 || 13:15:35 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170714_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170714_refcal_amp.png Amp] ||
|-
| 2017/07/16 || 02:48:33 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170716_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170716_refcal_amp.png Amp] ||
|-
| 2017/07/16 || 13:16:48 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170716_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170716_refcal_amp.png Amp] ||
|-
| 2017/07/17 || 13:14:54 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170717_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170717_refcal_amp.png Amp] ||
|-
| 2017/07/18 || 13:15:31 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170718_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170718_refcal_amp.png Amp] ||
|-
| 2017/07/19 || 13:16:16 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170719_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170719_refcal_amp.png Amp] ||
|-
| 2017/07/20 || 13:16:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170720_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170720_refcal_amp.png Amp] || No calibration for: Ant 10
|-
| 2017/07/21 || 13:20:57 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170721_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170721_refcal_amp.png Amp] ||
|-
| 2017/07/22 || 13:21:36 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170722_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170722_refcal_amp.png Amp] ||
|-
| 2017/07/23 || 13:34:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170723_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170723_refcal_amp.png Amp] ||
|-
| 2017/07/24 || 13:22:58 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170724_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170724_refcal_amp.png Amp] ||
|-
| 2017/07/25 || 13:23:38 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170725_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170725_refcal_amp.png Amp] ||
|-
| 2017/07/26 || 18:00:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170726_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170726_refcal_amp.png Amp] ||
|-
| 2017/07/28 || 02:42:36 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170728_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170728_refcal_amp.png Amp] ||
|-
| 2017/07/29 || 13:37:40 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170729_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170729_refcal_amp.png Amp] ||
|-
| 2017/07/31 || 13:27:05 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170731_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170731_refcal_amp.png Amp] ||
|-
| 2017/08/01 || 13:28:30 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170801_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170801_refcal_amp.png Amp] ||
|-
| 2017/08/02 || 13:29:13 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170802_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170802_refcal_amp.png Amp] ||
|-
| 2017/08/03 || 13:29:59 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170803_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170803_refcal_amp.png Amp] ||
|-
| 2017/08/05 || 02:35:58 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170805_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170805_refcal_amp.png Amp] ||
|-
| 2017/08/05 || 13:31:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170805_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170805_refcal_amp.png Amp] ||
|-
| 2017/08/06 || 13:32:06 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170806_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170806_refcal_amp.png Amp] ||
|-
| 2017/08/07 || 13:32:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170807_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170807_refcal_amp.png Amp] ||
|-
| 2017/08/08 || 13:33:33 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170808_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170808_refcal_amp.png Amp] ||
|-
| 2017/08/11 || 12:47:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170811_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170811_refcal_amp.png Amp] ||
|-
| 2017/08/12 || 12:43:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170812_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170812_refcal_amp.png Amp] || No calibration for: Ant 9
|-
| 2017/08/13 || 12:39:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170813_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170813_refcal_amp.png Amp] ||
|-
| 2017/08/14 || 12:34:19 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170814_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170814_refcal_amp.png Amp] ||
|-
| 2017/08/15 || 12:31:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170815_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170815_refcal_amp.png Amp] ||
|-
| 2017/08/16 || 12:27:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170816_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170816_refcal_amp.png Amp] ||
|-
| 2017/08/17 || 12:23:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170817_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170817_refcal_amp.png Amp] ||
|-
| 2017/08/18 || 12:19:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170818_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170818_refcal_amp.png Amp] ||
|-
| 2017/08/19 || 12:15:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170819_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170819_refcal_amp.png Amp] ||
|-
| 2017/08/21 || 12:07:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170821_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170821_refcal_amp.png Amp] ||
|-
| 2017/08/22 || 12:03:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170822_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170822_refcal_amp.png Amp] ||
|-
| 2017/08/23 || 12:14:51 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170823_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170823_refcal_amp.png Amp] ||
|-
| 2017/08/24 || 11:55:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170824_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170824_refcal_amp.png Amp] ||
|-
| 2017/08/25 || 14:01:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170825_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170825_refcal_amp.png Amp] ||
|-
| 2017/08/26 || 13:57:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170826_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170826_refcal_amp.png Amp] ||
|-
| 2017/08/28 || 01:03:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170828_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170828_refcal_amp.png Amp] ||
|-
| 2017/08/29 || 00:59:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170829_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170829_refcal_amp.png Amp] ||
|-
| 2017/08/29 || 13:49:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170829_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170829_refcal_amp.png Amp] ||
|-
| 2017/08/30 || 13:49:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170830_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170830_refcal_amp.png Amp] ||
|-
| 2017/08/31 || 13:50:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170831_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170831_refcal_amp.png Amp] ||
|-
| 2017/09/01 || 13:51:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170901_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170901_refcal_amp.png Amp] ||
|-
| 2017/09/02 || 13:52:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170902_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170902_refcal_amp.png Amp] ||
|-
| 2017/09/03 || 13:53:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170903_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170903_refcal_amp.png Amp] ||
|-
| 2017/09/04 || 13:54:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170904_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170904_refcal_amp.png Amp] ||
|-
| 2017/09/05 || 13:54:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170905_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170905_refcal_amp.png Amp] ||
|-
| 2017/09/06 || 13:55:58 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170906_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170906_refcal_amp.png Amp] ||
|-
| 2017/09/07 || 13:56:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170907_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170907_refcal_amp.png Amp] ||
|-
| 2017/09/08 || 13:56:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170908_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170908_refcal_amp.png Amp] ||
|-
| 2017/09/10 || 00:01:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170910_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170910_refcal_amp.png Amp] ||
|-
| 2017/09/10 || 13:57:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170910_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170910_refcal_amp.png Amp] ||
|-
| 2017/09/11 || 13:58:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170911_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170911_refcal_amp.png Amp] ||
|-
| 2017/09/12 || 14:00:11 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170912_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170912_refcal_amp.png Amp] ||
|-
| 2017/09/14 || 04:15:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170914_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170914_refcal_amp.png Amp] ||Refcal at around 14 UT is also good.
|-
| 2017/09/14 || 14:01:48 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170914_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170914_refcal_amp.png Amp] ||
|-
| 2017/09/15 || 14:39:27 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170915_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170915_refcal_amp.png Amp] ||
|-
| 2017/09/16 || 13:46:56 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170916_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170916_refcal_amp.png Amp] ||
|-
| 2017/09/17 || 13:47:46 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170917_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170917_refcal_amp.png Amp] ||
|-
| 2017/09/18 || 14:05:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170918_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170918_refcal_amp.png Amp] ||
|-
| 2017/09/19 || 14:06:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170919_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170919_refcal_amp.png Amp] ||
|-
| 2017/09/22 || 14:08:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170922_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170922_refcal_amp.png Amp] ||
|-
| 2017/09/23 || 14:09:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170923_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170923_refcal_amp.png Amp] ||
|-
| 2017/09/24 || 14:10:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170924_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170924_refcal_amp.png Amp] ||
|-
| 2017/09/25 || 14:17:33 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170925_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170925_refcal_amp.png Amp] ||
|-
| 2017/09/26 || 14:10:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170926_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170926_refcal_amp.png Amp] ||
|-
| 2017/09/27 || 14:06:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170927_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170927_refcal_amp.png Amp] ||
|-
| 2017/09/28 || 14:02:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170928_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170928_refcal_amp.png Amp] ||
|-
| 2017/09/29 || 14:01:20 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170929_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170929_refcal_amp.png Amp] ||
|-
| 2017/09/30 || 13:54:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170930_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170930_refcal_amp.png Amp] ||
|-
| 2017/10/01 || 13:50:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171001_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171001_refcal_amp.png Amp] ||
|-
| 2017/10/02 || 13:47:28 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171002_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171002_refcal_amp.png Amp] ||
|-
| 2017/10/03 || 13:43:25 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171003_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171003_refcal_amp.png Amp] ||
|-
| 2017/10/04 || 13:40:52 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171004_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171004_refcal_amp.png Amp] || No calibration for: Ant 10
|-
| 2017/10/06 || 02:42:39 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171006_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171006_refcal_amp.png Amp] ||
|-
| 2017/10/06 || 13:32:53 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171006_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171006_refcal_amp.png Amp] ||
|-
| 2017/10/07 || 13:30:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171007_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171007_refcal_amp.png Amp] ||
|-
| 2017/10/08 || 13:26:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171008_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171008_refcal_amp.png Amp] ||
|-
| 2017/10/10 || 02:31:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171010_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171010_refcal_amp.png Amp] ||
|-
| 2017/10/11 || 02:23:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171011_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171011_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/12 || 02:19:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171012_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171012_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/13 || 02:15:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171013_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171013_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/13 || 12:54:23 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171013_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171013_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/14 || 12:50:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171014_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171014_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/16 || 02:07:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171016_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171016_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/18 || 01:59:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171018_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171018_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/19 || 12:30:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171019_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171019_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/20 || 12:22:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171021_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171021_refcal_amp.png Amp] ||
|-
| 2017/10/21 || 12:22:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171021_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171021_refcal_amp.png Amp] ||
|-
| 2017/10/22 || 12:18:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171022_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171022_refcal_amp.png Amp] ||
|-
| 2017/10/24 || 12:10:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171024_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171024_refcal_amp.png Amp] || Few frequencies have unusually high amplitudes.
|-
| 2017/10/24 || 01:35:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171024_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171024_refcal_amp.png Amp] ||
|-
| 2017/10/25 || 01:31:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171025_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171025_refcal_amp.png Amp] ||
|-
| 2017/10/26 || 12:02:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171026_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171026_refcal_amp.png Amp] ||
|-
| 2017/10/27 || 11:58:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171027_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171027_refcal_amp.png Amp] ||
|-
| 2017/10/28 || 11:54:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171028_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171028_refcal_amp.png Amp] ||
|-
| 2017/10/29 || 11:50:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171029_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171029_refcal_amp.png Amp] || Ant 8 was down.
|-
| 2017/11/02 || 14:50:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171102_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171102_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/03 || 14:52:20 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171103_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171103_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/04 || 14:53:51 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171104_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171104_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/05 || 14:54:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171105_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171105_refcal_amp.png Amp] || Ant 3 was down. No calibration for: Ant 3
|-
| 2017/11/07 || 00:39:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171107_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171107_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/07 || 14:56:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171107_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171107_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/08 || 14:57:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171108_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171108_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/09 || 14:58:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171109_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171109_refcal_amp.png Amp] || No calibration for: Ant 3
|-

Reference Gain Calibration

2017-11-09T03:50:19Z

Nkuroda: /* List of Analyzed Reference Calibrations */

Reference complex gain calibration refers to determining the "system" amplitude and phase with high precision as a function of IF band (i.e. integrated over each 500 MHz IF band). A typical reference calibration would cover 34 bands, 2 polarizations, and 13 antennas. The routines (on pipeline machine) to retrieve and analyze the data are in the module refcal_anal.py. Start from a time range during which the reference calibration observation occurred (check the [http://ovsa.njit.edu/phasecal/ phasecal results] to see which 1-hr scan had stable phases)

<pre>
import refcal_anal as ra
from util import Time
#example time range of the refcal scan that took place BEFORE the observation
trange=Time(['2017-04-08T14:00','2017-04-08T15:00'])
</pre>



Now read the data from that timerange
<pre>
out=ra.rd_refcal(trange)
</pre>
Note that there are optional arguments that can be given, such as projid='PHASECAL' (the default) and srcid='1229+060', but these are generally not needed.

To correct for differential feed rotation (for refcal data after 05:00 UT on 2017-Jul-01), you can use:
<pre>
out_corr = ra.unrot_refcal(out)
</pre>

Take a look at the phases (averaged over each band):
<pre>
ra.graph(out_corr)
</pre>
By default it displays only bands 5, 11, 17, 23 and polarization XX. To change the bands and polarization to display, use the "bandplt" and 'pol' parameters (better to check more bands).
<pre>
ra.graph(out_corr, bandplt=[5,13,19,25], pol=1)
</pre>



Observations within this time range will be used for averaging to get the reference phases/amplitudes. Data will be flagged if the SNR is less than minsnr, which can be supplied. The default minsnr is set to 1.0. We can further determine a finer selection of time range within this scan that has clean and stable phases if needed, by setting the new timerange in "trange" below.

<pre>
refcal=ra.refcal_anal(out_corr,timerange=trange,scanidx=[0])
</pre>

It will generate four plots. First and second are phases and amplitudes of the data similar as those produced by ra.graph(), but with the selected time range for averaging highlighted (one can use "bandplt" and "pol" to choose bands and polarization to display as well). The 3rd plot is the averaged phase vs. frequency and the 4th is the averaged amplitude vs. frequency. Those data will be our "analyzed" reference calibration data saved in the returned dictionary (named "refcal" here). The dictionary contains the actual complex values (refcal['refcal']), a flag array with the same shape (refcal['flag']), and some timestamps, e.g., refcal['t_mid'] is the middle of the time range used for averaging. Both refcal['refcal'] and refcal['flag'] have a shape of (15, 2, 34) -- which corresponds to # of antennas, # of polarizations, and # of bands.

If you determine some antenna, band, polarization need to be flagged/unflagged, they have to be manually changed in the returned refcal['flag'] array. In this example, Antenna 12 was not tracking, and the algorithm did not pick up all of them, so we have to do this manually -- setting refcal['flag'][11, :, :]=1

<pre>
refcal['flag'][11]=1
</pre>

If satisfied with the results (by looking at the plots), we can go ahead and send them to the SQL database
<pre>
import cal_header as ch
ch.refcal2sql(refcal)
</pre>

To retrieve the refcal data back from SQL database based on, e.g., a solar data one wish to calibrate. We can provide a time:
<pre>
t=Time('2017-04-07T19:40')
refcal=ra.sql2refcal(t)
</pre>
The resulted refcal have three keys: 'amp' (15 x 2 x 34 array), 'pha' (15 x 2 x 34 array), and 'timestamp' (in jd). The refcal data found will be the closest one PRIOR to the supplied observation time.

== Updating the Reference Calibrations Table ==
The table below lists the known good reference calibrations. To facilitate adding entries to this table, do the following, where the time is after the desired refcal, but before any later refcal:
<pre>
t=Time('2017-06-23T19:40') # retrieves the refcal at 13:07 UT on that day
refcal=ra.sql2refcal(t)
ra.graph_results(refcal, savefigs=True)
</pre>
This will create summary plots of the amplitude and phase, will write the two corresponding *.png files into the /common/webplots/refcal folder, and will print as a text string the lines needed to add an entry. Just cut from the terminal and paste into the wiki editor at the appropriate place to preserve time order.

== List of Analyzed Reference Calibrations ==

{| class="wikitable" style="text-align: center; width: 800px; height: 200px;"
|-
| Date || Timestamp || Source || Obs Trange || Scan Idx || Avg Trange || Bands || Phase Plot || Amp Plot || Comments
|-
| 2017/04/02 || 06:36:50 || 3c273 || 04:20~11:00 || All || 05:47~07:26 || 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 || [[:File:20170402_refcal_pha.png|Phase]] || [[:File:20170402_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 11:38:17.
|-
| 2017/04/04 || 09:32:50 || 3c273 || 04:43~10:57 || All || 08:46~10:19 || 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 || [[:File:20170404_refcal_pha.png|Phase]] || [[:File:20170404_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 16:43:51.
|-
| 2017/04/05 ||06:44:10 || 3c273 || 04:17~10:30 || All || 04:27~09:34 || 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 || [[:File:20170405_refcal_pha.png|Phase]] || [[:File:20170405_refcal_amp.png|Amp]] || Ant 12 was not tracking.
|-
| 2017/04/06 || 09:54:50|| 3c273 || 04:14~10:49 || All || 05:39~08:11 || 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 || [[:File:20170406_refcal_pha.png|Phase]] || [[:File:20170406_refcal_amp.png|Amp]] || Ant 12 was not tracking.
|-
| 2017/04/07 || 08:30:51|| 3c273 || 04:00~10:30 || 1, 3, 5, 7, 9, 11, 13, 15, 17 || 07:53~09:10 || 5~34 || [[:File:20170407_refcal_pha.png|Phase]] || [[:File:20170407_refcal_amp.png|Amp]] || Ant 12 was not tracking.
|-
| 2017/04/08 || 06:14:51 || 3c273 || 05:00~10:30 || 1, 3, 5, 7, 9, 11, 13 || 05:00~07:00 || 5~34 || [[:File:20170408_refcal_pha.png|Phase]] || [[:File:20170408_refcal_amp.png|Amp]] || Ant 12 was not tracking. Ant 13 not working. Delay center change at 2017-04-08T03:12:26. Another refcal record is added at 2017-04-09T06:14:45.
|-
| 2017/04/10 || 06:57:10 || 3c273 || 04:30~10:30 || 2, 6, 8 || || 5~34 || [[:File:20170410_refcal_pha.png|Phase]] || [[:File:20170410_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 2017-04-08 13:20:39.
|-
| 2017/04/13 || 13:48:39 || 2136+006 || || 0 || || 5~23 || [http://ovsa.njit.edu/refcal/20170413_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170413_refcal_amp.png Amp] ||
|-
| 2017/04/16 || 06:36:48 || 3c273 || 03:00~11:00 || || 05:55~07:20 || 5~34 || [[:File:20170416_refcal_pha.png|Phase]] || [[:File:20170416_refcal_amp.png|Amp]] || Ant 12 was not tracking.
|-
| 2017/04/17 || 06:41:51 || 3c273 || 03:29~10:07 || All || 05:55~07:29 || 5~34 || [[:File:20170417_refcal_pha.png|Phase]] || [[:File:20170417_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 19:12:58.
|-
| 2017/04/26 || 08:06:52 || 3c273 || 02:50~09:28 || All || 07:21~08:57 || 5~34 || [[:File:20170426_refcal_pha.png|Phase]] || [[:File:20170426_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 04:37:28 and 11:51:26.
|-
| 2017/06/11 || 12:56:22 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170611_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170611_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/14 || 02:33:19 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170614_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170614_refcal_amp.png Amp] || No calibration for: Ant 8 Ant 12
|-
| 2017/06/14 || 13:01:19 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170614_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170614_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/15 || 13:05:48 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170615_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170615_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/16 || 13:05:48 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170616_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170616_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/20 || 13:06:26 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170620_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170620_refcal_amp.png Amp] || No calibration for: Ant 1 Ant 12
|-
| 2017/06/21 || 13:06:38 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170621_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170621_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/22 || 13:06:53 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170622_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170622_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/23 || 13:07:09 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170623_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170623_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/24 || 02:25:49 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170624_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170624_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/24 || 13:07:25 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170624_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170624_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/25 || 13:07:43 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170625_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170625_refcal_amp.png Amp] || No calibration for: Ant 10 Ant 12
|-
| 2017/06/26 || 13:15:47 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170626_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170626_refcal_amp.png Amp] || No calibration for: Ant 10 Ant 12
|-
| 2017/06/27 || 13:02:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170627_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170627_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/30 || 02:47:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170630_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170630_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/07/01 || 02:44:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170701_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170701_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/07/02 || 03:01:20 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170702_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170702_refcal_amp.png Amp] ||
|-
| 2017/07/03 || 02:47:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170703_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170703_refcal_amp.png Amp] || No calibration for: Ant 10
|-
| 2017/07/04 || 02:47:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170704_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170704_refcal_amp.png Amp] ||
|-
| 2017/07/05 || 02:55:19 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170705_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170705_refcal_amp.png Amp] ||
|-
| 2017/07/06 || 02:47:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170706_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170706_refcal_amp.png Amp] ||
|-
| 2017/07/07 || 13:12:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170707_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170707_refcal_amp.png Amp] ||
|-
| 2017/07/09 || 02:35:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170709_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170709_refcal_amp.png Amp] ||
|-
| 2017/07/09 || 13:16:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170709_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170709_refcal_amp.png Amp] ||
|-
| 2017/07/10 || 13:14:17 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170710_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170710_refcal_amp.png Amp] ||
|-
| 2017/07/11 || 13:14:18 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170711_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170711_refcal_amp.png Amp] ||
|-
| 2017/07/12 || 13:14:24 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170712_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170712_refcal_amp.png Amp] ||
|-
| 2017/07/13 || 13:14:59 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170713_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170713_refcal_amp.png Amp] ||
|-
| 2017/07/14 || 13:15:35 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170714_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170714_refcal_amp.png Amp] ||
|-
| 2017/07/16 || 02:48:33 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170716_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170716_refcal_amp.png Amp] ||
|-
| 2017/07/16 || 13:16:48 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170716_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170716_refcal_amp.png Amp] ||
|-
| 2017/07/17 || 13:14:54 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170717_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170717_refcal_amp.png Amp] ||
|-
| 2017/07/18 || 13:15:31 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170718_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170718_refcal_amp.png Amp] ||
|-
| 2017/07/19 || 13:16:16 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170719_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170719_refcal_amp.png Amp] ||
|-
| 2017/07/20 || 13:16:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170720_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170720_refcal_amp.png Amp] || No calibration for: Ant 10
|-
| 2017/07/21 || 13:20:57 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170721_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170721_refcal_amp.png Amp] ||
|-
| 2017/07/22 || 13:21:36 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170722_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170722_refcal_amp.png Amp] ||
|-
| 2017/07/23 || 13:34:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170723_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170723_refcal_amp.png Amp] ||
|-
| 2017/07/24 || 13:22:58 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170724_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170724_refcal_amp.png Amp] ||
|-
| 2017/07/25 || 13:23:38 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170725_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170725_refcal_amp.png Amp] ||
|-
| 2017/07/26 || 18:00:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170726_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170726_refcal_amp.png Amp] ||
|-
| 2017/07/28 || 02:42:36 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170728_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170728_refcal_amp.png Amp] ||
|-
| 2017/07/29 || 13:37:40 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170729_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170729_refcal_amp.png Amp] ||
|-
| 2017/07/31 || 13:27:05 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170731_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170731_refcal_amp.png Amp] ||
|-
| 2017/08/01 || 13:28:30 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170801_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170801_refcal_amp.png Amp] ||
|-
| 2017/08/02 || 13:29:13 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170802_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170802_refcal_amp.png Amp] ||
|-
| 2017/08/03 || 13:29:59 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170803_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170803_refcal_amp.png Amp] ||
|-
| 2017/08/05 || 02:35:58 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170805_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170805_refcal_amp.png Amp] ||
|-
| 2017/08/05 || 13:31:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170805_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170805_refcal_amp.png Amp] ||
|-
| 2017/08/06 || 13:32:06 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170806_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170806_refcal_amp.png Amp] ||
|-
| 2017/08/07 || 13:32:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170807_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170807_refcal_amp.png Amp] ||
|-
| 2017/08/08 || 13:33:33 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170808_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170808_refcal_amp.png Amp] ||
|-
| 2017/08/11 || 12:47:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170811_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170811_refcal_amp.png Amp] ||
|-
| 2017/08/12 || 12:43:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170812_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170812_refcal_amp.png Amp] || No calibration for: Ant 9
|-
| 2017/08/13 || 12:39:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170813_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170813_refcal_amp.png Amp] ||
|-
| 2017/08/14 || 12:34:19 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170814_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170814_refcal_amp.png Amp] ||
|-
| 2017/08/15 || 12:31:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170815_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170815_refcal_amp.png Amp] ||
|-
| 2017/08/16 || 12:27:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170816_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170816_refcal_amp.png Amp] ||
|-
| 2017/08/17 || 12:23:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170817_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170817_refcal_amp.png Amp] ||
|-
| 2017/08/18 || 12:19:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170818_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170818_refcal_amp.png Amp] ||
|-
| 2017/08/19 || 12:15:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170819_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170819_refcal_amp.png Amp] ||
|-
| 2017/08/21 || 12:07:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170821_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170821_refcal_amp.png Amp] ||
|-
| 2017/08/22 || 12:03:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170822_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170822_refcal_amp.png Amp] ||
|-
| 2017/08/23 || 12:14:51 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170823_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170823_refcal_amp.png Amp] ||
|-
| 2017/08/24 || 11:55:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170824_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170824_refcal_amp.png Amp] ||
|-
| 2017/08/25 || 14:01:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170825_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170825_refcal_amp.png Amp] ||
|-
| 2017/08/26 || 13:57:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170826_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170826_refcal_amp.png Amp] ||
|-
| 2017/08/28 || 01:03:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170828_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170828_refcal_amp.png Amp] ||
|-
| 2017/08/29 || 00:59:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170829_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170829_refcal_amp.png Amp] ||
|-
| 2017/08/29 || 13:49:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170829_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170829_refcal_amp.png Amp] ||
|-
| 2017/08/30 || 13:49:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170830_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170830_refcal_amp.png Amp] ||
|-
| 2017/08/31 || 13:50:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170831_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170831_refcal_amp.png Amp] ||
|-
| 2017/09/01 || 13:51:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170901_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170901_refcal_amp.png Amp] ||
|-
| 2017/09/02 || 13:52:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170902_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170902_refcal_amp.png Amp] ||
|-
| 2017/09/03 || 13:53:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170903_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170903_refcal_amp.png Amp] ||
|-
| 2017/09/04 || 13:54:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170904_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170904_refcal_amp.png Amp] ||
|-
| 2017/09/05 || 13:54:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170905_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170905_refcal_amp.png Amp] ||
|-
| 2017/09/06 || 13:55:58 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170906_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170906_refcal_amp.png Amp] ||
|-
| 2017/09/07 || 13:56:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170907_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170907_refcal_amp.png Amp] ||
|-
| 2017/09/08 || 13:56:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170908_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170908_refcal_amp.png Amp] ||
|-
| 2017/09/10 || 00:01:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170910_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170910_refcal_amp.png Amp] ||
|-
| 2017/09/10 || 13:57:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170910_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170910_refcal_amp.png Amp] ||
|-
| 2017/09/11 || 13:58:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170911_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170911_refcal_amp.png Amp] ||
|-
| 2017/09/12 || 14:00:11 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170912_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170912_refcal_amp.png Amp] ||
|-
| 2017/09/14 || 04:15:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170914_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170914_refcal_amp.png Amp] ||Refcal at around 14 UT is also good.
|-
| 2017/09/14 || 14:01:48 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170914_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170914_refcal_amp.png Amp] ||
|-
| 2017/09/15 || 14:39:27 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170915_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170915_refcal_amp.png Amp] ||
|-
| 2017/09/16 || 13:46:56 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170916_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170916_refcal_amp.png Amp] ||
|-
| 2017/09/17 || 13:47:46 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170917_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170917_refcal_amp.png Amp] ||
|-
| 2017/09/18 || 14:05:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170918_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170918_refcal_amp.png Amp] ||
|-
| 2017/09/19 || 14:06:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170919_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170919_refcal_amp.png Amp] ||
|-
| 2017/09/22 || 14:08:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170922_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170922_refcal_amp.png Amp] ||
|-
| 2017/09/23 || 14:09:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170923_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170923_refcal_amp.png Amp] ||
|-
| 2017/09/24 || 14:10:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170924_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170924_refcal_amp.png Amp] ||
|-
| 2017/09/25 || 14:17:33 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170925_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170925_refcal_amp.png Amp] ||
|-
| 2017/09/26 || 14:10:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170926_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170926_refcal_amp.png Amp] ||
|-
| 2017/09/27 || 14:06:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170927_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170927_refcal_amp.png Amp] ||
|-
| 2017/09/28 || 14:02:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170928_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170928_refcal_amp.png Amp] ||
|-
| 2017/09/29 || 14:01:20 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170929_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170929_refcal_amp.png Amp] ||
|-
| 2017/09/30 || 13:54:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170930_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170930_refcal_amp.png Amp] ||
|-
| 2017/10/01 || 13:50:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171001_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171001_refcal_amp.png Amp] ||
|-
| 2017/10/02 || 13:47:28 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171002_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171002_refcal_amp.png Amp] ||
|-
| 2017/10/03 || 13:43:25 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171003_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171003_refcal_amp.png Amp] ||
|-
| 2017/10/04 || 13:40:52 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171004_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171004_refcal_amp.png Amp] || No calibration for: Ant 10
|-
| 2017/10/06 || 02:42:39 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171006_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171006_refcal_amp.png Amp] ||
|-
| 2017/10/06 || 13:32:53 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171006_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171006_refcal_amp.png Amp] ||
|-
| 2017/10/07 || 13:30:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171007_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171007_refcal_amp.png Amp] ||
|-
| 2017/10/08 || 13:26:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171008_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171008_refcal_amp.png Amp] ||
|-
| 2017/10/10 || 02:31:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171010_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171010_refcal_amp.png Amp] ||
|-
| 2017/10/11 || 02:23:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171011_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171011_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/12 || 02:19:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171012_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171012_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/13 || 02:15:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171013_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171013_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/13 || 12:54:23 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171013_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171013_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/14 || 12:50:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171014_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171014_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/16 || 02:07:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171016_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171016_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/18 || 01:59:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171018_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171018_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/19 || 12:30:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171019_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171019_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/20 || 12:22:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171021_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171021_refcal_amp.png Amp] ||
|-
| 2017/10/21 || 12:22:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171021_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171021_refcal_amp.png Amp] ||
|-
| 2017/10/22 || 12:18:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171022_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171022_refcal_amp.png Amp] ||
|-
| 2017/10/24 || 12:10:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171024_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171024_refcal_amp.png Amp] || Few frequencies have unusually high amplitudes.
|-
| 2017/10/24 || 01:35:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171024_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171024_refcal_amp.png Amp] ||
|-
| 2017/10/25 || 01:31:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171025_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171025_refcal_amp.png Amp] ||
|-
| 2017/10/26 || 12:02:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171026_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171026_refcal_amp.png Amp] ||
|-
| 2017/10/27 || 11:58:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171027_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171027_refcal_amp.png Amp] ||
|-
| 2017/10/28 || 11:54:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171028_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171028_refcal_amp.png Amp] ||
|-
| 2017/10/29 || 11:50:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171029_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171029_refcal_amp.png Amp] || Ant 8 was down.
|-
| 2017/11/02 || 14:50:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171102_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171102_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/03 || 14:52:20 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171103_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171103_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/04 || 14:53:51 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171104_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171104_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/05 || 14:54:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171105_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171105_refcal_amp.png Amp] || Ant 3 was down. No calibration for: Ant 3
|-
| 2017/11/07 || 00:39:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171107_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171107_refcal_amp.png Amp] ||
|-
| 2017/11/07 || 14:56:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171107_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171107_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/08 || 14:57:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171108_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171108_refcal_amp.png Amp] || No calibration for: Ant 3
|-

Reference Gain Calibration

2017-11-07T23:47:00Z

Nkuroda: /* List of Analyzed Reference Calibrations */

Reference complex gain calibration refers to determining the "system" amplitude and phase with high precision as a function of IF band (i.e. integrated over each 500 MHz IF band). A typical reference calibration would cover 34 bands, 2 polarizations, and 13 antennas. The routines (on pipeline machine) to retrieve and analyze the data are in the module refcal_anal.py. Start from a time range during which the reference calibration observation occurred (check the [http://ovsa.njit.edu/phasecal/ phasecal results] to see which 1-hr scan had stable phases)

<pre>
import refcal_anal as ra
from util import Time
#example time range of the refcal scan that took place BEFORE the observation
trange=Time(['2017-04-08T14:00','2017-04-08T15:00'])
</pre>



Now read the data from that timerange
<pre>
out=ra.rd_refcal(trange)
</pre>
Note that there are optional arguments that can be given, such as projid='PHASECAL' (the default) and srcid='1229+060', but these are generally not needed.

To correct for differential feed rotation (for refcal data after 05:00 UT on 2017-Jul-01), you can use:
<pre>
out_corr = ra.unrot_refcal(out)
</pre>

Take a look at the phases (averaged over each band):
<pre>
ra.graph(out_corr)
</pre>
By default it displays only bands 5, 11, 17, 23 and polarization XX. To change the bands and polarization to display, use the "bandplt" and 'pol' parameters (better to check more bands).
<pre>
ra.graph(out_corr, bandplt=[5,13,19,25], pol=1)
</pre>



Observations within this time range will be used for averaging to get the reference phases/amplitudes. Data will be flagged if the SNR is less than minsnr, which can be supplied. The default minsnr is set to 1.0. We can further determine a finer selection of time range within this scan that has clean and stable phases if needed, by setting the new timerange in "trange" below.

<pre>
refcal=ra.refcal_anal(out_corr,timerange=trange,scanidx=[0])
</pre>

It will generate four plots. First and second are phases and amplitudes of the data similar as those produced by ra.graph(), but with the selected time range for averaging highlighted (one can use "bandplt" and "pol" to choose bands and polarization to display as well). The 3rd plot is the averaged phase vs. frequency and the 4th is the averaged amplitude vs. frequency. Those data will be our "analyzed" reference calibration data saved in the returned dictionary (named "refcal" here). The dictionary contains the actual complex values (refcal['refcal']), a flag array with the same shape (refcal['flag']), and some timestamps, e.g., refcal['t_mid'] is the middle of the time range used for averaging. Both refcal['refcal'] and refcal['flag'] have a shape of (15, 2, 34) -- which corresponds to # of antennas, # of polarizations, and # of bands.

If you determine some antenna, band, polarization need to be flagged/unflagged, they have to be manually changed in the returned refcal['flag'] array. In this example, Antenna 12 was not tracking, and the algorithm did not pick up all of them, so we have to do this manually -- setting refcal['flag'][11, :, :]=1

<pre>
refcal['flag'][11]=1
</pre>

If satisfied with the results (by looking at the plots), we can go ahead and send them to the SQL database
<pre>
import cal_header as ch
ch.refcal2sql(refcal)
</pre>

To retrieve the refcal data back from SQL database based on, e.g., a solar data one wish to calibrate. We can provide a time:
<pre>
t=Time('2017-04-07T19:40')
refcal=ra.sql2refcal(t)
</pre>
The resulted refcal have three keys: 'amp' (15 x 2 x 34 array), 'pha' (15 x 2 x 34 array), and 'timestamp' (in jd). The refcal data found will be the closest one PRIOR to the supplied observation time.

== Updating the Reference Calibrations Table ==
The table below lists the known good reference calibrations. To facilitate adding entries to this table, do the following, where the time is after the desired refcal, but before any later refcal:
<pre>
t=Time('2017-06-23T19:40') # retrieves the refcal at 13:07 UT on that day
refcal=ra.sql2refcal(t)
ra.graph_results(refcal, savefigs=True)
</pre>
This will create summary plots of the amplitude and phase, will write the two corresponding *.png files into the /common/webplots/refcal folder, and will print as a text string the lines needed to add an entry. Just cut from the terminal and paste into the wiki editor at the appropriate place to preserve time order.

== List of Analyzed Reference Calibrations ==

{| class="wikitable" style="text-align: center; width: 800px; height: 200px;"
|-
| Date || Timestamp || Source || Obs Trange || Scan Idx || Avg Trange || Bands || Phase Plot || Amp Plot || Comments
|-
| 2017/04/02 || 06:36:50 || 3c273 || 04:20~11:00 || All || 05:47~07:26 || 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 || [[:File:20170402_refcal_pha.png|Phase]] || [[:File:20170402_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 11:38:17.
|-
| 2017/04/04 || 09:32:50 || 3c273 || 04:43~10:57 || All || 08:46~10:19 || 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 || [[:File:20170404_refcal_pha.png|Phase]] || [[:File:20170404_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 16:43:51.
|-
| 2017/04/05 ||06:44:10 || 3c273 || 04:17~10:30 || All || 04:27~09:34 || 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 || [[:File:20170405_refcal_pha.png|Phase]] || [[:File:20170405_refcal_amp.png|Amp]] || Ant 12 was not tracking.
|-
| 2017/04/06 || 09:54:50|| 3c273 || 04:14~10:49 || All || 05:39~08:11 || 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 || [[:File:20170406_refcal_pha.png|Phase]] || [[:File:20170406_refcal_amp.png|Amp]] || Ant 12 was not tracking.
|-
| 2017/04/07 || 08:30:51|| 3c273 || 04:00~10:30 || 1, 3, 5, 7, 9, 11, 13, 15, 17 || 07:53~09:10 || 5~34 || [[:File:20170407_refcal_pha.png|Phase]] || [[:File:20170407_refcal_amp.png|Amp]] || Ant 12 was not tracking.
|-
| 2017/04/08 || 06:14:51 || 3c273 || 05:00~10:30 || 1, 3, 5, 7, 9, 11, 13 || 05:00~07:00 || 5~34 || [[:File:20170408_refcal_pha.png|Phase]] || [[:File:20170408_refcal_amp.png|Amp]] || Ant 12 was not tracking. Ant 13 not working. Delay center change at 2017-04-08T03:12:26. Another refcal record is added at 2017-04-09T06:14:45.
|-
| 2017/04/10 || 06:57:10 || 3c273 || 04:30~10:30 || 2, 6, 8 || || 5~34 || [[:File:20170410_refcal_pha.png|Phase]] || [[:File:20170410_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 2017-04-08 13:20:39.
|-
| 2017/04/13 || 13:48:39 || 2136+006 || || 0 || || 5~23 || [http://ovsa.njit.edu/refcal/20170413_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170413_refcal_amp.png Amp] ||
|-
| 2017/04/16 || 06:36:48 || 3c273 || 03:00~11:00 || || 05:55~07:20 || 5~34 || [[:File:20170416_refcal_pha.png|Phase]] || [[:File:20170416_refcal_amp.png|Amp]] || Ant 12 was not tracking.
|-
| 2017/04/17 || 06:41:51 || 3c273 || 03:29~10:07 || All || 05:55~07:29 || 5~34 || [[:File:20170417_refcal_pha.png|Phase]] || [[:File:20170417_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 19:12:58.
|-
| 2017/04/26 || 08:06:52 || 3c273 || 02:50~09:28 || All || 07:21~08:57 || 5~34 || [[:File:20170426_refcal_pha.png|Phase]] || [[:File:20170426_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 04:37:28 and 11:51:26.
|-
| 2017/06/11 || 12:56:22 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170611_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170611_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/14 || 02:33:19 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170614_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170614_refcal_amp.png Amp] || No calibration for: Ant 8 Ant 12
|-
| 2017/06/14 || 13:01:19 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170614_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170614_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/15 || 13:05:48 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170615_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170615_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/16 || 13:05:48 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170616_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170616_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/20 || 13:06:26 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170620_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170620_refcal_amp.png Amp] || No calibration for: Ant 1 Ant 12
|-
| 2017/06/21 || 13:06:38 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170621_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170621_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/22 || 13:06:53 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170622_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170622_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/23 || 13:07:09 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170623_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170623_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/24 || 02:25:49 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170624_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170624_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/24 || 13:07:25 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170624_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170624_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/25 || 13:07:43 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170625_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170625_refcal_amp.png Amp] || No calibration for: Ant 10 Ant 12
|-
| 2017/06/26 || 13:15:47 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170626_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170626_refcal_amp.png Amp] || No calibration for: Ant 10 Ant 12
|-
| 2017/06/27 || 13:02:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170627_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170627_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/30 || 02:47:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170630_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170630_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/07/01 || 02:44:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170701_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170701_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/07/02 || 03:01:20 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170702_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170702_refcal_amp.png Amp] ||
|-
| 2017/07/03 || 02:47:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170703_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170703_refcal_amp.png Amp] || No calibration for: Ant 10
|-
| 2017/07/04 || 02:47:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170704_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170704_refcal_amp.png Amp] ||
|-
| 2017/07/05 || 02:55:19 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170705_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170705_refcal_amp.png Amp] ||
|-
| 2017/07/06 || 02:47:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170706_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170706_refcal_amp.png Amp] ||
|-
| 2017/07/07 || 13:12:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170707_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170707_refcal_amp.png Amp] ||
|-
| 2017/07/09 || 02:35:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170709_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170709_refcal_amp.png Amp] ||
|-
| 2017/07/09 || 13:16:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170709_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170709_refcal_amp.png Amp] ||
|-
| 2017/07/10 || 13:14:17 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170710_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170710_refcal_amp.png Amp] ||
|-
| 2017/07/11 || 13:14:18 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170711_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170711_refcal_amp.png Amp] ||
|-
| 2017/07/12 || 13:14:24 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170712_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170712_refcal_amp.png Amp] ||
|-
| 2017/07/13 || 13:14:59 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170713_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170713_refcal_amp.png Amp] ||
|-
| 2017/07/14 || 13:15:35 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170714_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170714_refcal_amp.png Amp] ||
|-
| 2017/07/16 || 02:48:33 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170716_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170716_refcal_amp.png Amp] ||
|-
| 2017/07/16 || 13:16:48 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170716_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170716_refcal_amp.png Amp] ||
|-
| 2017/07/17 || 13:14:54 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170717_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170717_refcal_amp.png Amp] ||
|-
| 2017/07/18 || 13:15:31 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170718_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170718_refcal_amp.png Amp] ||
|-
| 2017/07/19 || 13:16:16 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170719_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170719_refcal_amp.png Amp] ||
|-
| 2017/07/20 || 13:16:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170720_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170720_refcal_amp.png Amp] || No calibration for: Ant 10
|-
| 2017/07/21 || 13:20:57 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170721_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170721_refcal_amp.png Amp] ||
|-
| 2017/07/22 || 13:21:36 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170722_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170722_refcal_amp.png Amp] ||
|-
| 2017/07/23 || 13:34:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170723_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170723_refcal_amp.png Amp] ||
|-
| 2017/07/24 || 13:22:58 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170724_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170724_refcal_amp.png Amp] ||
|-
| 2017/07/25 || 13:23:38 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170725_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170725_refcal_amp.png Amp] ||
|-
| 2017/07/26 || 18:00:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170726_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170726_refcal_amp.png Amp] ||
|-
| 2017/07/28 || 02:42:36 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170728_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170728_refcal_amp.png Amp] ||
|-
| 2017/07/29 || 13:37:40 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170729_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170729_refcal_amp.png Amp] ||
|-
| 2017/07/31 || 13:27:05 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170731_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170731_refcal_amp.png Amp] ||
|-
| 2017/08/01 || 13:28:30 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170801_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170801_refcal_amp.png Amp] ||
|-
| 2017/08/02 || 13:29:13 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170802_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170802_refcal_amp.png Amp] ||
|-
| 2017/08/03 || 13:29:59 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170803_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170803_refcal_amp.png Amp] ||
|-
| 2017/08/05 || 02:35:58 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170805_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170805_refcal_amp.png Amp] ||
|-
| 2017/08/05 || 13:31:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170805_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170805_refcal_amp.png Amp] ||
|-
| 2017/08/06 || 13:32:06 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170806_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170806_refcal_amp.png Amp] ||
|-
| 2017/08/07 || 13:32:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170807_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170807_refcal_amp.png Amp] ||
|-
| 2017/08/08 || 13:33:33 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170808_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170808_refcal_amp.png Amp] ||
|-
| 2017/08/11 || 12:47:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170811_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170811_refcal_amp.png Amp] ||
|-
| 2017/08/12 || 12:43:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170812_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170812_refcal_amp.png Amp] || No calibration for: Ant 9
|-
| 2017/08/13 || 12:39:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170813_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170813_refcal_amp.png Amp] ||
|-
| 2017/08/14 || 12:34:19 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170814_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170814_refcal_amp.png Amp] ||
|-
| 2017/08/15 || 12:31:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170815_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170815_refcal_amp.png Amp] ||
|-
| 2017/08/16 || 12:27:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170816_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170816_refcal_amp.png Amp] ||
|-
| 2017/08/17 || 12:23:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170817_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170817_refcal_amp.png Amp] ||
|-
| 2017/08/18 || 12:19:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170818_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170818_refcal_amp.png Amp] ||
|-
| 2017/08/19 || 12:15:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170819_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170819_refcal_amp.png Amp] ||
|-
| 2017/08/21 || 12:07:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170821_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170821_refcal_amp.png Amp] ||
|-
| 2017/08/22 || 12:03:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170822_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170822_refcal_amp.png Amp] ||
|-
| 2017/08/23 || 12:14:51 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170823_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170823_refcal_amp.png Amp] ||
|-
| 2017/08/24 || 11:55:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170824_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170824_refcal_amp.png Amp] ||
|-
| 2017/08/25 || 14:01:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170825_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170825_refcal_amp.png Amp] ||
|-
| 2017/08/26 || 13:57:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170826_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170826_refcal_amp.png Amp] ||
|-
| 2017/08/28 || 01:03:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170828_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170828_refcal_amp.png Amp] ||
|-
| 2017/08/29 || 00:59:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170829_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170829_refcal_amp.png Amp] ||
|-
| 2017/08/29 || 13:49:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170829_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170829_refcal_amp.png Amp] ||
|-
| 2017/08/30 || 13:49:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170830_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170830_refcal_amp.png Amp] ||
|-
| 2017/08/31 || 13:50:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170831_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170831_refcal_amp.png Amp] ||
|-
| 2017/09/01 || 13:51:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170901_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170901_refcal_amp.png Amp] ||
|-
| 2017/09/02 || 13:52:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170902_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170902_refcal_amp.png Amp] ||
|-
| 2017/09/03 || 13:53:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170903_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170903_refcal_amp.png Amp] ||
|-
| 2017/09/04 || 13:54:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170904_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170904_refcal_amp.png Amp] ||
|-
| 2017/09/05 || 13:54:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170905_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170905_refcal_amp.png Amp] ||
|-
| 2017/09/06 || 13:55:58 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170906_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170906_refcal_amp.png Amp] ||
|-
| 2017/09/07 || 13:56:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170907_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170907_refcal_amp.png Amp] ||
|-
| 2017/09/08 || 13:56:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170908_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170908_refcal_amp.png Amp] ||
|-
| 2017/09/10 || 00:01:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170910_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170910_refcal_amp.png Amp] ||
|-
| 2017/09/10 || 13:57:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170910_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170910_refcal_amp.png Amp] ||
|-
| 2017/09/11 || 13:58:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170911_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170911_refcal_amp.png Amp] ||
|-
| 2017/09/12 || 14:00:11 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170912_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170912_refcal_amp.png Amp] ||
|-
| 2017/09/14 || 04:15:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170914_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170914_refcal_amp.png Amp] ||Refcal at around 14 UT is also good.
|-
| 2017/09/14 || 14:01:48 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170914_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170914_refcal_amp.png Amp] ||
|-
| 2017/09/15 || 14:39:27 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170915_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170915_refcal_amp.png Amp] ||
|-
| 2017/09/16 || 13:46:56 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170916_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170916_refcal_amp.png Amp] ||
|-
| 2017/09/17 || 13:47:46 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170917_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170917_refcal_amp.png Amp] ||
|-
| 2017/09/18 || 14:05:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170918_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170918_refcal_amp.png Amp] ||
|-
| 2017/09/19 || 14:06:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170919_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170919_refcal_amp.png Amp] ||
|-
| 2017/09/22 || 14:08:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170922_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170922_refcal_amp.png Amp] ||
|-
| 2017/09/23 || 14:09:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170923_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170923_refcal_amp.png Amp] ||
|-
| 2017/09/24 || 14:10:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170924_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170924_refcal_amp.png Amp] ||
|-
| 2017/09/25 || 14:17:33 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170925_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170925_refcal_amp.png Amp] ||
|-
| 2017/09/26 || 14:10:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170926_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170926_refcal_amp.png Amp] ||
|-
| 2017/09/27 || 14:06:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170927_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170927_refcal_amp.png Amp] ||
|-
| 2017/09/28 || 14:02:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170928_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170928_refcal_amp.png Amp] ||
|-
| 2017/09/29 || 14:01:20 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170929_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170929_refcal_amp.png Amp] ||
|-
| 2017/09/30 || 13:54:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170930_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170930_refcal_amp.png Amp] ||
|-
| 2017/10/01 || 13:50:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171001_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171001_refcal_amp.png Amp] ||
|-
| 2017/10/02 || 13:47:28 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171002_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171002_refcal_amp.png Amp] ||
|-
| 2017/10/03 || 13:43:25 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171003_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171003_refcal_amp.png Amp] ||
|-
| 2017/10/04 || 13:40:52 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171004_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171004_refcal_amp.png Amp] || No calibration for: Ant 10
|-
| 2017/10/06 || 02:42:39 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171006_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171006_refcal_amp.png Amp] ||
|-
| 2017/10/06 || 13:32:53 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171006_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171006_refcal_amp.png Amp] ||
|-
| 2017/10/07 || 13:30:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171007_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171007_refcal_amp.png Amp] ||
|-
| 2017/10/08 || 13:26:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171008_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171008_refcal_amp.png Amp] ||
|-
| 2017/10/10 || 02:31:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171010_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171010_refcal_amp.png Amp] ||
|-
| 2017/10/11 || 02:23:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171011_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171011_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/12 || 02:19:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171012_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171012_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/13 || 02:15:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171013_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171013_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/13 || 12:54:23 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171013_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171013_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/14 || 12:50:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171014_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171014_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/16 || 02:07:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171016_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171016_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/18 || 01:59:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171018_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171018_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/19 || 12:30:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171019_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171019_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/20 || 12:22:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171021_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171021_refcal_amp.png Amp] ||
|-
| 2017/10/21 || 12:22:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171021_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171021_refcal_amp.png Amp] ||
|-
| 2017/10/22 || 12:18:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171022_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171022_refcal_amp.png Amp] ||
|-
| 2017/10/24 || 12:10:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171024_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171024_refcal_amp.png Amp] || Few frequencies have unusually high amplitudes.
|-
| 2017/10/24 || 01:35:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171024_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171024_refcal_amp.png Amp] ||
|-
| 2017/10/25 || 01:31:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171025_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171025_refcal_amp.png Amp] ||
|-
| 2017/10/26 || 12:02:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171026_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171026_refcal_amp.png Amp] ||
|-
| 2017/10/27 || 11:58:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171027_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171027_refcal_amp.png Amp] ||
|-
| 2017/10/28 || 11:54:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171028_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171028_refcal_amp.png Amp] ||
|-
| 2017/10/29 || 11:50:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171029_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171029_refcal_amp.png Amp] || Ant 8 was down.
|-
| 2017/11/02 || 14:50:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171102_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171102_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/03 || 14:52:20 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171103_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171103_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/04 || 14:53:51 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171104_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171104_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/05 || 14:54:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171105_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171105_refcal_amp.png Amp] || Ant 3 was down. No calibration for: Ant 3
|-
| 2017/11/07 || 00:39:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171107_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171107_refcal_amp.png Amp] ||
|-
| 2017/11/07 || 14:56:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171107_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171107_refcal_amp.png Amp] || No calibration for: Ant 3
|-

Reference Gain Calibration

2017-11-07T04:04:52Z

Nkuroda: /* List of Analyzed Reference Calibrations */

Reference complex gain calibration refers to determining the "system" amplitude and phase with high precision as a function of IF band (i.e. integrated over each 500 MHz IF band). A typical reference calibration would cover 34 bands, 2 polarizations, and 13 antennas. The routines (on pipeline machine) to retrieve and analyze the data are in the module refcal_anal.py. Start from a time range during which the reference calibration observation occurred (check the [http://ovsa.njit.edu/phasecal/ phasecal results] to see which 1-hr scan had stable phases)

<pre>
import refcal_anal as ra
from util import Time
#example time range of the refcal scan that took place BEFORE the observation
trange=Time(['2017-04-08T14:00','2017-04-08T15:00'])
</pre>



Now read the data from that timerange
<pre>
out=ra.rd_refcal(trange)
</pre>
Note that there are optional arguments that can be given, such as projid='PHASECAL' (the default) and srcid='1229+060', but these are generally not needed.

To correct for differential feed rotation (for refcal data after 05:00 UT on 2017-Jul-01), you can use:
<pre>
out_corr = ra.unrot_refcal(out)
</pre>

Take a look at the phases (averaged over each band):
<pre>
ra.graph(out_corr)
</pre>
By default it displays only bands 5, 11, 17, 23 and polarization XX. To change the bands and polarization to display, use the "bandplt" and 'pol' parameters (better to check more bands).
<pre>
ra.graph(out_corr, bandplt=[5,13,19,25], pol=1)
</pre>



Observations within this time range will be used for averaging to get the reference phases/amplitudes. Data will be flagged if the SNR is less than minsnr, which can be supplied. The default minsnr is set to 1.0. We can further determine a finer selection of time range within this scan that has clean and stable phases if needed, by setting the new timerange in "trange" below.

<pre>
refcal=ra.refcal_anal(out_corr,timerange=trange,scanidx=[0])
</pre>

It will generate four plots. First and second are phases and amplitudes of the data similar as those produced by ra.graph(), but with the selected time range for averaging highlighted (one can use "bandplt" and "pol" to choose bands and polarization to display as well). The 3rd plot is the averaged phase vs. frequency and the 4th is the averaged amplitude vs. frequency. Those data will be our "analyzed" reference calibration data saved in the returned dictionary (named "refcal" here). The dictionary contains the actual complex values (refcal['refcal']), a flag array with the same shape (refcal['flag']), and some timestamps, e.g., refcal['t_mid'] is the middle of the time range used for averaging. Both refcal['refcal'] and refcal['flag'] have a shape of (15, 2, 34) -- which corresponds to # of antennas, # of polarizations, and # of bands.

If you determine some antenna, band, polarization need to be flagged/unflagged, they have to be manually changed in the returned refcal['flag'] array. In this example, Antenna 12 was not tracking, and the algorithm did not pick up all of them, so we have to do this manually -- setting refcal['flag'][11, :, :]=1

<pre>
refcal['flag'][11]=1
</pre>

If satisfied with the results (by looking at the plots), we can go ahead and send them to the SQL database
<pre>
import cal_header as ch
ch.refcal2sql(refcal)
</pre>

To retrieve the refcal data back from SQL database based on, e.g., a solar data one wish to calibrate. We can provide a time:
<pre>
t=Time('2017-04-07T19:40')
refcal=ra.sql2refcal(t)
</pre>
The resulted refcal have three keys: 'amp' (15 x 2 x 34 array), 'pha' (15 x 2 x 34 array), and 'timestamp' (in jd). The refcal data found will be the closest one PRIOR to the supplied observation time.

== Updating the Reference Calibrations Table ==
The table below lists the known good reference calibrations. To facilitate adding entries to this table, do the following, where the time is after the desired refcal, but before any later refcal:
<pre>
t=Time('2017-06-23T19:40') # retrieves the refcal at 13:07 UT on that day
refcal=ra.sql2refcal(t)
ra.graph_results(refcal, savefigs=True)
</pre>
This will create summary plots of the amplitude and phase, will write the two corresponding *.png files into the /common/webplots/refcal folder, and will print as a text string the lines needed to add an entry. Just cut from the terminal and paste into the wiki editor at the appropriate place to preserve time order.

== List of Analyzed Reference Calibrations ==

{| class="wikitable" style="text-align: center; width: 800px; height: 200px;"
|-
| Date || Timestamp || Source || Obs Trange || Scan Idx || Avg Trange || Bands || Phase Plot || Amp Plot || Comments
|-
| 2017/04/02 || 06:36:50 || 3c273 || 04:20~11:00 || All || 05:47~07:26 || 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 || [[:File:20170402_refcal_pha.png|Phase]] || [[:File:20170402_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 11:38:17.
|-
| 2017/04/04 || 09:32:50 || 3c273 || 04:43~10:57 || All || 08:46~10:19 || 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 || [[:File:20170404_refcal_pha.png|Phase]] || [[:File:20170404_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 16:43:51.
|-
| 2017/04/05 ||06:44:10 || 3c273 || 04:17~10:30 || All || 04:27~09:34 || 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 || [[:File:20170405_refcal_pha.png|Phase]] || [[:File:20170405_refcal_amp.png|Amp]] || Ant 12 was not tracking.
|-
| 2017/04/06 || 09:54:50|| 3c273 || 04:14~10:49 || All || 05:39~08:11 || 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 || [[:File:20170406_refcal_pha.png|Phase]] || [[:File:20170406_refcal_amp.png|Amp]] || Ant 12 was not tracking.
|-
| 2017/04/07 || 08:30:51|| 3c273 || 04:00~10:30 || 1, 3, 5, 7, 9, 11, 13, 15, 17 || 07:53~09:10 || 5~34 || [[:File:20170407_refcal_pha.png|Phase]] || [[:File:20170407_refcal_amp.png|Amp]] || Ant 12 was not tracking.
|-
| 2017/04/08 || 06:14:51 || 3c273 || 05:00~10:30 || 1, 3, 5, 7, 9, 11, 13 || 05:00~07:00 || 5~34 || [[:File:20170408_refcal_pha.png|Phase]] || [[:File:20170408_refcal_amp.png|Amp]] || Ant 12 was not tracking. Ant 13 not working. Delay center change at 2017-04-08T03:12:26. Another refcal record is added at 2017-04-09T06:14:45.
|-
| 2017/04/10 || 06:57:10 || 3c273 || 04:30~10:30 || 2, 6, 8 || || 5~34 || [[:File:20170410_refcal_pha.png|Phase]] || [[:File:20170410_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 2017-04-08 13:20:39.
|-
| 2017/04/13 || 13:48:39 || 2136+006 || || 0 || || 5~23 || [http://ovsa.njit.edu/refcal/20170413_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170413_refcal_amp.png Amp] ||
|-
| 2017/04/16 || 06:36:48 || 3c273 || 03:00~11:00 || || 05:55~07:20 || 5~34 || [[:File:20170416_refcal_pha.png|Phase]] || [[:File:20170416_refcal_amp.png|Amp]] || Ant 12 was not tracking.
|-
| 2017/04/17 || 06:41:51 || 3c273 || 03:29~10:07 || All || 05:55~07:29 || 5~34 || [[:File:20170417_refcal_pha.png|Phase]] || [[:File:20170417_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 19:12:58.
|-
| 2017/04/26 || 08:06:52 || 3c273 || 02:50~09:28 || All || 07:21~08:57 || 5~34 || [[:File:20170426_refcal_pha.png|Phase]] || [[:File:20170426_refcal_amp.png|Amp]] || Ant 12 was not tracking. Delay center change at 04:37:28 and 11:51:26.
|-
| 2017/06/11 || 12:56:22 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170611_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170611_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/14 || 02:33:19 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170614_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170614_refcal_amp.png Amp] || No calibration for: Ant 8 Ant 12
|-
| 2017/06/14 || 13:01:19 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170614_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170614_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/15 || 13:05:48 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170615_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170615_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/16 || 13:05:48 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170616_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170616_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/20 || 13:06:26 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170620_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170620_refcal_amp.png Amp] || No calibration for: Ant 1 Ant 12
|-
| 2017/06/21 || 13:06:38 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170621_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170621_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/22 || 13:06:53 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170622_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170622_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/23 || 13:07:09 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170623_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170623_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/24 || 02:25:49 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170624_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170624_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/24 || 13:07:25 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170624_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170624_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/25 || 13:07:43 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170625_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170625_refcal_amp.png Amp] || No calibration for: Ant 10 Ant 12
|-
| 2017/06/26 || 13:15:47 || || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170626_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170626_refcal_amp.png Amp] || No calibration for: Ant 10 Ant 12
|-
| 2017/06/27 || 13:02:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170627_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170627_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/06/30 || 02:47:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170630_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170630_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/07/01 || 02:44:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170701_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170701_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/07/02 || 03:01:20 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170702_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170702_refcal_amp.png Amp] ||
|-
| 2017/07/03 || 02:47:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170703_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170703_refcal_amp.png Amp] || No calibration for: Ant 10
|-
| 2017/07/04 || 02:47:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170704_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170704_refcal_amp.png Amp] ||
|-
| 2017/07/05 || 02:55:19 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170705_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170705_refcal_amp.png Amp] ||
|-
| 2017/07/06 || 02:47:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170706_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170706_refcal_amp.png Amp] ||
|-
| 2017/07/07 || 13:12:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170707_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170707_refcal_amp.png Amp] ||
|-
| 2017/07/09 || 02:35:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170709_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170709_refcal_amp.png Amp] ||
|-
| 2017/07/09 || 13:16:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170709_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170709_refcal_amp.png Amp] ||
|-
| 2017/07/10 || 13:14:17 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170710_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170710_refcal_amp.png Amp] ||
|-
| 2017/07/11 || 13:14:18 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170711_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170711_refcal_amp.png Amp] ||
|-
| 2017/07/12 || 13:14:24 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170712_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170712_refcal_amp.png Amp] ||
|-
| 2017/07/13 || 13:14:59 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170713_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170713_refcal_amp.png Amp] ||
|-
| 2017/07/14 || 13:15:35 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170714_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170714_refcal_amp.png Amp] ||
|-
| 2017/07/16 || 02:48:33 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170716_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170716_refcal_amp.png Amp] ||
|-
| 2017/07/16 || 13:16:48 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170716_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170716_refcal_amp.png Amp] ||
|-
| 2017/07/17 || 13:14:54 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170717_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170717_refcal_amp.png Amp] ||
|-
| 2017/07/18 || 13:15:31 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170718_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170718_refcal_amp.png Amp] ||
|-
| 2017/07/19 || 13:16:16 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170719_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170719_refcal_amp.png Amp] ||
|-
| 2017/07/20 || 13:16:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170720_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170720_refcal_amp.png Amp] || No calibration for: Ant 10
|-
| 2017/07/21 || 13:20:57 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170721_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170721_refcal_amp.png Amp] ||
|-
| 2017/07/22 || 13:21:36 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170722_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170722_refcal_amp.png Amp] ||
|-
| 2017/07/23 || 13:34:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170723_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170723_refcal_amp.png Amp] ||
|-
| 2017/07/24 || 13:22:58 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170724_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170724_refcal_amp.png Amp] ||
|-
| 2017/07/25 || 13:23:38 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170725_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170725_refcal_amp.png Amp] ||
|-
| 2017/07/26 || 18:00:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170726_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170726_refcal_amp.png Amp] ||
|-
| 2017/07/28 || 02:42:36 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170728_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170728_refcal_amp.png Amp] ||
|-
| 2017/07/29 || 13:37:40 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170729_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170729_refcal_amp.png Amp] ||
|-
| 2017/07/31 || 13:27:05 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170731_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170731_refcal_amp.png Amp] ||
|-
| 2017/08/01 || 13:28:30 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170801_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170801_refcal_amp.png Amp] ||
|-
| 2017/08/02 || 13:29:13 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170802_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170802_refcal_amp.png Amp] ||
|-
| 2017/08/03 || 13:29:59 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170803_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170803_refcal_amp.png Amp] ||
|-
| 2017/08/05 || 02:35:58 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170805_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170805_refcal_amp.png Amp] ||
|-
| 2017/08/05 || 13:31:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170805_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170805_refcal_amp.png Amp] ||
|-
| 2017/08/06 || 13:32:06 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170806_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170806_refcal_amp.png Amp] ||
|-
| 2017/08/07 || 13:32:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170807_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170807_refcal_amp.png Amp] ||
|-
| 2017/08/08 || 13:33:33 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170808_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170808_refcal_amp.png Amp] ||
|-
| 2017/08/11 || 12:47:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170811_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170811_refcal_amp.png Amp] ||
|-
| 2017/08/12 || 12:43:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170812_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170812_refcal_amp.png Amp] || No calibration for: Ant 9
|-
| 2017/08/13 || 12:39:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170813_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170813_refcal_amp.png Amp] ||
|-
| 2017/08/14 || 12:34:19 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170814_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170814_refcal_amp.png Amp] ||
|-
| 2017/08/15 || 12:31:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170815_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170815_refcal_amp.png Amp] ||
|-
| 2017/08/16 || 12:27:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170816_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170816_refcal_amp.png Amp] ||
|-
| 2017/08/17 || 12:23:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170817_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170817_refcal_amp.png Amp] ||
|-
| 2017/08/18 || 12:19:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170818_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170818_refcal_amp.png Amp] ||
|-
| 2017/08/19 || 12:15:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170819_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170819_refcal_amp.png Amp] ||
|-
| 2017/08/21 || 12:07:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170821_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170821_refcal_amp.png Amp] ||
|-
| 2017/08/22 || 12:03:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170822_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170822_refcal_amp.png Amp] ||
|-
| 2017/08/23 || 12:14:51 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170823_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170823_refcal_amp.png Amp] ||
|-
| 2017/08/24 || 11:55:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170824_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170824_refcal_amp.png Amp] ||
|-
| 2017/08/25 || 14:01:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170825_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170825_refcal_amp.png Amp] ||
|-
| 2017/08/26 || 13:57:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170826_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170826_refcal_amp.png Amp] ||
|-
| 2017/08/28 || 01:03:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170828_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170828_refcal_amp.png Amp] ||
|-
| 2017/08/29 || 00:59:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170829_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170829_refcal_amp.png Amp] ||
|-
| 2017/08/29 || 13:49:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170829_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170829_refcal_amp.png Amp] ||
|-
| 2017/08/30 || 13:49:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170830_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170830_refcal_amp.png Amp] ||
|-
| 2017/08/31 || 13:50:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170831_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170831_refcal_amp.png Amp] ||
|-
| 2017/09/01 || 13:51:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170901_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170901_refcal_amp.png Amp] ||
|-
| 2017/09/02 || 13:52:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170902_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170902_refcal_amp.png Amp] ||
|-
| 2017/09/03 || 13:53:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170903_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170903_refcal_amp.png Amp] ||
|-
| 2017/09/04 || 13:54:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170904_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170904_refcal_amp.png Amp] ||
|-
| 2017/09/05 || 13:54:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170905_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170905_refcal_amp.png Amp] ||
|-
| 2017/09/06 || 13:55:58 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170906_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170906_refcal_amp.png Amp] ||
|-
| 2017/09/07 || 13:56:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170907_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170907_refcal_amp.png Amp] ||
|-
| 2017/09/08 || 13:56:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170908_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170908_refcal_amp.png Amp] ||
|-
| 2017/09/10 || 00:01:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170910_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170910_refcal_amp.png Amp] ||
|-
| 2017/09/10 || 13:57:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170910_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170910_refcal_amp.png Amp] ||
|-
| 2017/09/11 || 13:58:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170911_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170911_refcal_amp.png Amp] ||
|-
| 2017/09/12 || 14:00:11 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170912_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170912_refcal_amp.png Amp] ||
|-
| 2017/09/14 || 04:15:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170914_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170914_refcal_amp.png Amp] ||Refcal at around 14 UT is also good.
|-
| 2017/09/14 || 14:01:48 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170914_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170914_refcal_amp.png Amp] ||
|-
| 2017/09/15 || 14:39:27 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170915_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170915_refcal_amp.png Amp] ||
|-
| 2017/09/16 || 13:46:56 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170916_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170916_refcal_amp.png Amp] ||
|-
| 2017/09/17 || 13:47:46 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170917_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170917_refcal_amp.png Amp] ||
|-
| 2017/09/18 || 14:05:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170918_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170918_refcal_amp.png Amp] ||
|-
| 2017/09/19 || 14:06:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170919_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170919_refcal_amp.png Amp] ||
|-
| 2017/09/22 || 14:08:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170922_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170922_refcal_amp.png Amp] ||
|-
| 2017/09/23 || 14:09:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170923_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170923_refcal_amp.png Amp] ||
|-
| 2017/09/24 || 14:10:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170924_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170924_refcal_amp.png Amp] ||
|-
| 2017/09/25 || 14:17:33 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170925_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170925_refcal_amp.png Amp] ||
|-
| 2017/09/26 || 14:10:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170926_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170926_refcal_amp.png Amp] ||
|-
| 2017/09/27 || 14:06:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170927_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170927_refcal_amp.png Amp] ||
|-
| 2017/09/28 || 14:02:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170928_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170928_refcal_amp.png Amp] ||
|-
| 2017/09/29 || 14:01:20 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170929_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170929_refcal_amp.png Amp] ||
|-
| 2017/09/30 || 13:54:50 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20170930_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20170930_refcal_amp.png Amp] ||
|-
| 2017/10/01 || 13:50:49 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171001_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171001_refcal_amp.png Amp] ||
|-
| 2017/10/02 || 13:47:28 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171002_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171002_refcal_amp.png Amp] ||
|-
| 2017/10/03 || 13:43:25 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171003_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171003_refcal_amp.png Amp] ||
|-
| 2017/10/04 || 13:40:52 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171004_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171004_refcal_amp.png Amp] || No calibration for: Ant 10
|-
| 2017/10/06 || 02:42:39 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171006_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171006_refcal_amp.png Amp] ||
|-
| 2017/10/06 || 13:32:53 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171006_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171006_refcal_amp.png Amp] ||
|-
| 2017/10/07 || 13:30:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171007_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171007_refcal_amp.png Amp] ||
|-
| 2017/10/08 || 13:26:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171008_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171008_refcal_amp.png Amp] ||
|-
| 2017/10/10 || 02:31:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171010_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171010_refcal_amp.png Amp] ||
|-
| 2017/10/11 || 02:23:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171011_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171011_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/12 || 02:19:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171012_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171012_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/13 || 02:15:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171013_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171013_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/13 || 12:54:23 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171013_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171013_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/14 || 12:50:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171014_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171014_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/16 || 02:07:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171016_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171016_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/18 || 01:59:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171018_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171018_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/19 || 12:30:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171019_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171019_refcal_amp.png Amp] || No calibration for: Ant 12
|-
| 2017/10/20 || 12:22:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171021_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171021_refcal_amp.png Amp] ||
|-
| 2017/10/21 || 12:22:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171021_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171021_refcal_amp.png Amp] ||
|-
| 2017/10/22 || 12:18:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171022_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171022_refcal_amp.png Amp] ||
|-
| 2017/10/24 || 12:10:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171024_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171024_refcal_amp.png Amp] || Few frequencies have unusually high amplitudes.
|-
| 2017/10/24 || 01:35:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171024_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171024_refcal_amp.png Amp] ||
|-
| 2017/10/25 || 01:31:50 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171025_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171025_refcal_amp.png Amp] ||
|-
| 2017/10/26 || 12:02:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171026_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171026_refcal_amp.png Amp] ||
|-
| 2017/10/27 || 11:58:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171027_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171027_refcal_amp.png Amp] ||
|-
| 2017/10/28 || 11:54:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171028_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171028_refcal_amp.png Amp] ||
|-
| 2017/10/29 || 11:50:22 || 0319+415 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171029_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171029_refcal_amp.png Amp] || Ant 8 was down.
|-
| 2017/11/02 || 14:50:49 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171102_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171102_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/03 || 14:52:20 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171103_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171103_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/04 || 14:53:51 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171104_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171104_refcal_amp.png Amp] || No calibration for: Ant 3
|-
| 2017/11/05 || 14:54:50 || 1229+020 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171105_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171105_refcal_amp.png Amp] || Ant 3 was down. No calibration for: Ant 3
|-
| 2017/11/07 || 00:39:49 || 2253+161 || || 0 || || 5~34 || [http://ovsa.njit.edu/refcal/20171107_refcal_pha.png Phase] || [http://ovsa.njit.edu/refcal/20171107_refcal_amp.png Amp] ||
|-

Reference Gain Calibration

2017-10-01T14:48:57Z

Nkuroda: /* List of Analyzed Reference Calibrations */

Reference Gain Calibration

2017-09-30T23:02:50Z

Nkuroda: /* List of Analyzed Reference Calibrations */

Reference Gain Calibration

2017-09-30T06:26:54Z

Nkuroda: /* List of Analyzed Reference Calibrations */

Reference Gain Calibration

2017-09-29T19:22:22Z

Nkuroda: /* List of Analyzed Reference Calibrations */

Reference Gain Calibration

2017-09-28T14:56:44Z

Nkuroda: /* List of Analyzed Reference Calibrations */

Reference Gain Calibration

2017-09-27T15:53:39Z

Nkuroda: /* List of Analyzed Reference Calibrations */