XMM-Newton Science Analysis System


ebadpixupdate (ebadpixupdate-1.11) [22.0.0-9173c7d25-20250127]

Algorithm

    Read the events list

    Define flags array, set to 0

    if fromccf then
       Loop on ccds
          Read the bad pixels for that CCD via the CAL
          call flagEvents
          call updateBadpix
       end Loop
    endif

    if fromfiles then
       Loop on bad pixels tables
          Read bad pixels
          call flagEvents
          call updateBadpix
       end Loop
    endif
    end

    subroutine flagEvents
       map = 0

       if overwrite and (forcereplace or events ON_BADPIX exist)
          unset ON_BADPIX, CLOSE_TO_DEADPIX and CLOSE_TO_BRIGHTPIX
       if replaceonboard and (forcereplace or flagged events exist)
          unset CLOSE_TO_ONBOARD_BADPIX

       Loop over bad pixels
          map(xb,yb) = map(xb,yb) OR ON_BADPIX
          Loop over pixels next to (xb,yb)
             if dead pixel then
                map(x,y) = map(x,y) OR CLOSE_TO_DEADPIX
             else
                map(x,y) = map(x,y) OR CLOSE_TO_BRIGHTPIX
             endif
          end Loop
       end Loop

       Loop over events for that CCD
          FLAG = FLAG OR map(RAWX,RAWY)
       end Loop
    end subroutine flagEvents

    subroutine updateBadpix
       if not (overwrite and replaceonboard) then
          call readBadpix on BADPIXnn table for current CCD/node in events file
          if overwrite and (forcereplace or events ON_BADPIX exist)
             remove rows where BADFLAG>1
          if replaceonboard and (forcereplace or flagged events exist)
             remove rows where BADFLAG=1
       endif
       add list of new bad pixels at the end of the list
       call mergeBad to remove redundancies
       call writeBadpix to BADPIXnn table
    end subroutine updateBadpix