XMM-Newton SAS Home Page
XMM-Newton Science Analysis System

eregionanalyse (especget-1.54) [xmmsas_20230412_1735-21.0.0]


There are three possible ways of entering the background.

1. From a background region within the source image via the backexp parameter. In this case the task normalises for the different source and background region areas. NB: This normalisation does not take account of bad pixels, bad columns or chip gaps.

2. From a background image in which case the background is taken from the source region within the image specified in the bkgimageset parameter.

3. As a single value entered in counts per second via the bckval parameter.

XMM-Newton SOC -- 2023-04-16