erosita-forum

With the task apetool, one could create a flux limit map corresponding to a likelihood threshold (e.g., probability < 4e-6) with a given background map. Note that the apetool result is given in terms of minimum photon counts required by the threshold. It can be converted to flux adopting an ECF. The...

Yes, the first step is to correct the attitude table. Please see an example below: ftcopy "300007/fm00_300007_120_EventList_001_c001.fits[2][col TIME,RA=RA-0.001389444,DEC=DEC+0.001171111,ROLL]" cor_fm00_300007_120_EventList_001_c001.fits clobber=yes evatt EVENTFILE=cor_fm00_300007_120_Eve...

Such events do not exist in the calibrated event files. The corresponding exposure time sections are excluded from the good time intervals. So no additional treatment about them is needed. If you plot the image and the exposure map, you can see in such regions the image is relatively darker and the ...