Difference between revisions of "EOVSA Data products"

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(Getting level 2 data)
(Getting level 2 data)
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* Click "synoptic fits" button next to the calendar tool.
 
* Click "synoptic fits" button next to the calendar tool.
  
 +
List of Level 2 data products
 
{| class="wikitable"
 
{| class="wikitable"
|+Food complements
 
 
|-
 
|-
|Orange
+
! scope="col"| Quantity
|Apple
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! scope="col"| Price
 
|-
 
|-
|Bread
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| 0.3 kg
|Pie
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| $0.65
 
|-
 
|-
|Butter
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| 0.125 kg
|Ice cream
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| $1.25
 
|}
 
|}
  
 
===Reading level 2 data===
 
===Reading level 2 data===

Revision as of 18:38, 23 March 2020

Welcome to the EOVSA data products documentation. EOVSA observes the full disk of the Sun at all times when the Sun is >10 degrees above the local horizon, which is season dependent and ranges from 7-12 hours duration centered on 20 UT. During January, coverage will be 16-24 UT daily, 7 days/week. EOVSA will provide microwave spectra and imaging at up to 451 frequencies between 1 and 18 GHz. We deliver the radio interferometry data in level 0-2.

Pipeline flowchart.jpg

Data Definition

Level 0 - Raw visibility data from the instrument

Level 1 - Calibrated visibility data

Level 1 data have all of the required content to produce Level 2 data products.

CASA 1-min averaged ms

CASA Event ms

Level 2 - Images and spectrogram data in standard FITS format

Data series

All-day TP spectrum

Daily total power full-Sun-integrated spectrogram calibrated in solar flux units are provided at 451 frequencies and 1 s time resolution.

from suncasa.eovsa import eovsa_dspec as ds
## define the dynamic spectrum file.
tpfits = 'EOVSA_TPall_20191225.fts'
## display the dynamic spectrum. 
ds.dspec(tpfits)
TPSP.jpeg

All-day XP spectrum

Daily cross power spectrogram (mean flux from baselines with "intermediate" lengths) calibrated in solar flux units are provided at 451 frequencies and 1 s time resolution. XP spectrogram has much better sensitivity to weak bursts.

from suncasa.eovsa import eovsa_dspec as ds
## define the dynamic spectrum file.
tpfits = 'EOVSA_XPall_20191225.fts'
## display the dynamic spectrum. 
ds.dspec(tpfits)
XPSP.jpeg

Synoptic 6-band Images

Full disk images at 6 selected frequency bands centered at 1.4, 3.0, 4.5, 6.8, 10.2, and 13.9 GHz are provided once per day, calibrated in brightness temperature.
Synoptic image.jpg

10-min 6-band Images

Event images

Getting level 2 data

EOVSA Level 2 data products can be retrieved from the "synoptic data" page:

http://www.ovsa.njit.edu/fits/synoptic

Example - get the synoptic data on December 25, 2019

  • go to EOVSA browser page.
  • Browse to December 25, 2019.
  • Click "synoptic fits" button next to the calendar tool.

List of Level 2 data products

Quantity Price
0.3 kg $0.65
0.125 kg $1.25

Reading level 2 data