XMM-Newton Science Analysis System


omdrifthist (omdrifthist-1.44) [xmmsas_20230412_1735-21.0.0]

Description

This task provides graphical and statistical information on the OM tracking history. This information will enable the observer to assess the effects of the DPU `shift and add' procedure on the OM PSF. The input file is the pipeline(omprep)-prepared OM tracking history auxiliary file from a single exposure, which contains an $(x,y)$ pointing position (as measured from the tracking stars) for each tracking frame. The resulting plot, which is PPS product OM postscript tracking history plot, contains statistics on the tracking history, a spot diagrams of the incremental drift-size, and two histograms showing the distribution of spacecraft pointing in $x$ and $y$.