XMM-Newton Science Analysis System


ommodmap (ommodmap-2.26) [22.0.0-9173c7d25-20250127]

Algorithm

subroutine ommodmap

   read in task parameters

   open OM OSW Image file

   determine file type from datamode in primary header

   read in the science window keywords from the primary header

   calculate the image binning

   extract window data from MODES binary table extension

   extract quality array

   extract OM OSW Image

   if modulo-8 noise is not lost in binning

      calculate good pixels to be used in producing the mod8 Tile Map using a 
      sigma clipping method

      calculate size of modulo-8 tile

      calculate size of sliding box

      loop over OM OSW Image in steps of modulo-8 tile

         loop over each pixel in modulo-8 tile

            use sliding box to calculate mean pixel values

         end loop

         use mean pixel values to calculate modulo-8 tile

         insert modulo-8 tile into modulo-8 map

      end loop

   end if

   correct OM OSW Image for modulo-8 noise

   create output OM OSW Image file

end subroutine ommodmap