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

eupper (especget-1.54) [xmmsas_20211130_0941-20.0.0]


By default the exposure time used for converting counts to count rate is read from the EXPOSURE keyword in the header of the source image. An exposure map may be introduced by the exposuremap parameter in which case the exposure time is taken as the value at the central pixel of the source region within the exposure map. A set of exposure maps containing the required RA/DEC position may be used.

XMM-Newton SOC -- 2021-11-30