The eROSITA Early Data Release (EDR) consists mainly of calibrated event files for each camera and CAl-PV observation. The event file names give an idea of the content of the files. The names are of the form:
PQii_jjjjjj_klm_nnnnnn_Rooo.fits
Meaning | Options | Explanation | |
---|---|---|---|
P |
Observation mode | p | Pointing |
f | Field scan mode | ||
Q |
Ownership | m | MPE |
i | IKI | ||
c | Calibration | ||
o | Other | ||
ii |
eRASS number | 00 | For Cal-PV |
jjjjjj |
Sky map number | For Cal-PV: observation ID. | |
k |
Telescope ID | 1...7 | Individual cameras/telescopes |
0 | All cameras/telescopes | ||
8 | Cameras with on-chip filter | ||
9 | Cameras without on-chip filter | ||
l |
Filter wheel number | 0 | Closed |
1 | Open | ||
2 | Filter | ||
3 | Calibration source | ||
4 | Intermediate/undefined | ||
m |
Energy band | 0 | Full energy band. |
nnnnnn |
Product type [1] | EventList | Calibrated event list |
R |
Processing configuration | c | Cal-PV release |
ooo |
Processing configuration number | 001 | 001 for Early Data Release (EDR). |
[1] eSASS task srctool will automatically produce additional products for the different source data with the following names (a detailed description of srctool can be found here):
Example: fm00_500171_020_EventList_c001.fits
, which is an event list file from an observation performed in scan mode. The event list is the result of combining all cameras with filter in the whole energy band.