Data Access
The RHESSI X-ray-based flare list is obtained by comparing the observing summary count rate in the 6 to 12 keV energy band to a threshold. The count rate threshold is determined from the background level; which is obtained using a 60 second running average. For an interval to be considered as a flare candidate, the count rate must be greater than 3*sigma above the background level. Variations in the count rate due to changes in attenuator state or decimation state are taken into account by use of the "corrected" count rate method, which empirically determines the corrections.
The flare list is created during quicklook processing. The full list includes some events which are not necessarily of solar origin.
The complete description can be found at https://hesperia.gsfc.nasa.gov/rhessi3/docs/qlook/hsi_flare_list.html.
Version:2.7.0
The RHESSI X-ray-based flare list is obtained by comparing the observing summary count rate in the 6 to 12 keV energy band to a threshold. The count rate threshold is determined from the background level; which is obtained using a 60 second running average. For an interval to be considered as a flare candidate, the count rate must be greater than 3*sigma above the background level. Variations in the count rate due to changes in attenuator state or decimation state are taken into account by use of the "corrected" count rate method, which empirically determines the corrections.
The flare list is created during quicklook processing. The full list includes some events which are not necessarily of solar origin.
The complete description can be found at https://hesperia.gsfc.nasa.gov/rhessi3/docs/qlook/hsi_flare_list.html.
| Role | Person | StartDate | StopDate | Note | |
|---|---|---|---|---|---|
| 1. | DataProducer | spase://SMWG/Person/A.Kimberley.Tolbert | |||
| 2. | MetadataContact | spase://SMWG/Person/Olga.Y.Uritskaya | |||
| 3. | GeneralContact | spase://SMWG/Person/Gordon.D.Holman |
Peak Rate: peak counts/second in energy range 6-12 keV, averaged over active collimators, including background.
Total Counts: counts in energy range 6-12 keV integrated over duration of flare summed over all subcollimators, including background.
Energy: the highest energy band in which the flare was observed.
Radial Distance: distance from Sun center.
Quality Codes: Qn, where n is the total number of data gap, SAA, particle, eclipse or decimation flags set for event. n ranges from 0 to 11. Use care when analyzing the data when the quality is not zero.
Flare Flag Codes:
a0 - In attenuator state 0 (None) sometime during flare
a1 - In attenuator state 1 (Thin) sometime during flare
a2 - In attenuator state 2 (Thick) sometime during flare
a3 - In attenuator state 3 (Both) sometime during flare
An - Attenuator state (0=None, 1=Thin, 2=Thick, 3=Both) at peak of flare
DF - Front segment counts were decimated sometime during flare
DR - Rear segment counts were decimated sometime during flare
ED - Spacecraft eclipse (night) sometime during flare
EE - Flare ended in spacecraft eclipse (night)
ES - Flare started in spacecraft eclipse (night)
FE - Flare ongoing at end of file
FR - In Fast Rate Mode
FS - Flare ongoing at start of file
GD - Data gap during flare
GE - Flare ended in data gap
GS - Flare started in data gap
MR - Spacecraft in high-latitude zone during flare
NS - Non-solar event
PE - Particle event: Particles are present
PS - Possible Solar Flare; in front detectors, but no position
Pn - Position Quality: P0 = Position is NOT valid, P1 = Position is valid
Qn - Data Quality: Q0 = Highest Quality, Q11 = Lowest Quality
SD - Spacecraft was in SAA sometime during flare
SE - Flare ended when spacecraft was in SAA
SS - Flare started when spacecraft was in SAA
Events which have no position and show up mostly in the front detectors, but were not able to be imaged are flagged as "PS".
Events which do not have valid position are only confirmed to be non-solar if the NS flag is set.