XMM-Newton Science Analysis System


eslewchain (eslewchain-1.20.1) [xmmsas_20230412_1735-21.0.0]

Algorithm

   Find an event file in the current directory

   Find the time of the start and end of the slew = tbegin and tend
   Set tdelta = 45 seconds

   for i = 0 to Number_subimages

     tstart = tbegin + i * tdelta 
     tstop = tstart + tdelta

     extract an eventfile, largetimefile, from (tstart-tdelta) to (tstop+tdelta)

     Attitude correct largetimefile

     extract an eventfile, timfiltfile, from largetimefile with t between tstart     and tstop

     Find the X,Y range present in timfiltfile = x1, x2, y1, y2

     extract an eventfile, filtfile, from largetimefile in this X,Y range

     Attitude correct filtfile

     Find the X, Y ranges of events in filtfile

     extract images, for each E band, from filtfile with these X,Y boundaries

     create exposure maps for these images (bands 6,7,8)

   end loop