erosita-forum

Hi Jeremy, Thank you for your reply. It is very helpful. There is still one question. When I extract the spectra from a large area, the photon counts given by *srctool* do not match the value I directly count from the event file. The total number of photon counts in the spectrum file is about 6,000 ...

Hello everyone, I am extracting the spectra of some diffuse emission from a large area (e.g. 4 deg×2deg) and I am a bit confused about some parameters automatically derived by the *srctool* method. 1)I find that the photon counts given by the *srctool* are less than the value which I directly count....

Hello everyone ,

I was looking at how to barycenter eROSITA Data Release 1 for timing analysis.
However, it appears that there is no orbit file accessible for the eSASS4DR1 operational period (after December 2019).

Will this be released at a later time?

Tong