Difference between revisions of "EOVSA Data products"

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(Level 2 - Images and spectrogram data in standard FITS format)
(Level 2 - Images and spectrogram data in standard FITS format)
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==Level 2 - Images and spectrogram data in standard FITS format ==
 
==Level 2 - Images and spectrogram data in standard FITS format ==
'''Get level 2 data'''
+
===Getting level 2 data===
  
 
EOVSA Level 2 data products can be retrieved from the "synoptic data" page:
 
EOVSA Level 2 data products can be retrieved from the "synoptic data" page:
 
[http://www.ovsa.njit.edu/fits/synoptic]
 
[http://www.ovsa.njit.edu/fits/synoptic]
  
===[http://www.ovsa.njit.edu/fits/synoptic# All-day TP spectrum]===
+
====[http://www.ovsa.njit.edu/fits/synoptic# 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.
 
Daily total power full-Sun-integrated spectrogram calibrated in solar flux units are provided at 451 frequencies and 1 s time resolution.
  
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[[File:TPSP.jpeg|center|500px]]
 
[[File:TPSP.jpeg|center|500px]]
  
===[http://www.ovsa.njit.edu/fits/synoptic# All-day XP spectrum]===
+
====[http://www.ovsa.njit.edu/fits/synoptic# 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.
 
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.
  
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[[File:XPSP.jpeg|500px| center]]
 
[[File:XPSP.jpeg|500px| center]]
  
===[http://www.ovsa.njit.edu/fits/synoptic# Synoptic 6-band Images]===
+
====[http://www.ovsa.njit.edu/fits/synoptic# 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. [[File:synoptic_image.jpg| center |400px]]
 
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. [[File:synoptic_image.jpg| center |400px]]
  
===10-min 6-band Images===
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====10-min 6-band Images====
===Event images===
+
====Event images====
 +
 
 +
===Reading level 2 data===

Revision as of 18:13, 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

Getting level 2 data

EOVSA Level 2 data products can be retrieved from the "synoptic data" page: [1]

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

Reading level 2 data