XMM-Newton Science Analysis System


attcalc (attcalc-4.39) [xmmsas_20230412_1735-21.0.0]

Input Files

1. Input MOS or pn event list containing correct DETX and DETY coordinates (0.05 arcsecond resolution). Keywords DATAMODE and TCDLT are read, as are (depending on refpointlabel) RA_NOM and DEC_NOM or RA_OBJ and DEC_OBJ.
2. atthkgen output file (default name: atthk.dat), containing median and mean pointing direction over the observation (this is all that attcalc accesses from this file). It is not necessary for this file to exist, though, if so, no PNT attributes will be propagated to the events file. Keywords read are (depending on parameters attitudelabel and withmedianpnt) MAHFRA, MAHFDEC and MAHFPA or MOMRA, MOMDEC and MOMPA or AAHFRA, AAHFDEC and AAHFPA or AOMRA, AOMDEC and AOMPA.