EOVSA Data Products: Difference between revisions
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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 | 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. | ||
[[File:pipeline_flowchart.jpg|center|600px]] | [[File:pipeline_flowchart.jpg|center|600px]] | ||
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Images and spectrogram data in standard FITS format | Images and spectrogram data in standard FITS format | ||
===All-day TP spectrum=== | ===All-day TP spectrum=== | ||
The all-day TP spectrum provides a daily dynamic spectrum of the sun-integrated flux in the broad frequency range 1-18 GHz at up to 451 science frequency channels with a cadence of 1 s. | The all-day TP spectrum provides a daily dynamic spectrum of the sun-integrated flux in the broad frequency range 1-18 GHz at up to 451 science frequency channels with a cadence of 1 s. | ||
[[File:TPSP.jpeg|center|600px]] | [[File:TPSP.jpeg|center|600px]] | ||
=All-day XP spectrum= | ===All-day XP spectrum=== | ||
The all-day XP spectrum provides a daily dynamic spectrum of mean flux from baselines with "intermediate" lengths in the broad frequency range 1-18 GHz at up to 451 science frequency channels with a cadence of 1 s. | The all-day XP spectrum provides a daily dynamic spectrum of mean flux from baselines with "intermediate" lengths in the broad frequency range 1-18 GHz at up to 451 science frequency channels with a cadence of 1 s. | ||
[[File:XPSP.jpeg|600px| center]] | [[File:XPSP.jpeg|600px| center]] | ||
=Synoptic 6-band Images= | ===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 will be 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 will be provided once per day, calibrated in brightness temperature. [[File:synoptic_image.jpg| center |400px]] | ||
===10-min 6-band Images=== | |||
===Event 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 will be provided once per day, calibrated in brightness temperature. Total power full-Sun-integrated spectrograms calibrated in solar flux units will be provided at 451 frequencies and 1 s time resolution. Similar cross-power spectrograms will also be provided, which have much better sensitivity to weak bursts. EOVSA will also provide quick look images and spatially-resolved microwave spectra of any bursts that are identified in the cross-power spectra. Such spatially-resolved spectra can be analyzed to provide quantitative diagnostics of the magnetic field, plasma, and particle energy parameters in the burst source. | |||
Revision as of 14:54, 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.
Data Definition
Level 0
Raw visibility data from the instrument
Level 1
Calibrated visibility data, which 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
All-day TP spectrum
The all-day TP spectrum provides a daily dynamic spectrum of the sun-integrated flux in the broad frequency range 1-18 GHz at up to 451 science frequency channels with a cadence of 1 s.
All-day XP spectrum
The all-day XP spectrum provides a daily dynamic spectrum of mean flux from baselines with "intermediate" lengths in the broad frequency range 1-18 GHz at up to 451 science frequency channels with a cadence of 1 s.
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 will be provided once per day, calibrated in brightness temperature.
10-min 6-band Images
Event 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 will be provided once per day, calibrated in brightness temperature. Total power full-Sun-integrated spectrograms calibrated in solar flux units will be provided at 451 frequencies and 1 s time resolution. Similar cross-power spectrograms will also be provided, which have much better sensitivity to weak bursts. EOVSA will also provide quick look images and spatially-resolved microwave spectra of any bursts that are identified in the cross-power spectra. Such spatially-resolved spectra can be analyzed to provide quantitative diagnostics of the magnetic field, plasma, and particle energy parameters in the burst source.