XMM-Newton Science Analysis System


ebadpixupdate (ebadpixupdate-1.11) [xmmsas_20230412_1735-21.0.0]

How to provide the bad pixels

Two sources of bad pixels are considered here:

1. the CCF; because the pipeline processing takes place within days of the observation, the CCF at the time of processing is necessarily always late (i.e. it was built on the basis of previous observations). A few months later, the user may note that the applicable bad pixels file (listed in the calibration index file generated by cifbuild) has changed.
2. bad pixels files; those may be obtained from the merged events list by running emeventsproj and embadpixfind for MOS, or badpixfind for PN, with user-defined settings and energy or time selection. They may also be written manually (respecting the same format described in badpix). Another possibility is to take the BADPIXnn tables from another events list.