XMM-Newton Science Analysis System


inthist (inthist-2.23.2) [xmmsas_20230412_1735-21.0.0]

Algorithm

inthist is a perl task which does the following:

1. Read input parameters and check for errors

2. Run the FTOOLS task farith to flat field the input images

3. Run the F90 module intmakehist:

   module intmakehist
   
        Read input flatfielded images and parameters
   
        Open output Post Script file
   
        Foreach (input image){
   
            Rebin to specified binsize
   
            Estimate histogram mean and variance using sigma clipping
   
            Compute optimal histogram binsize and display range based on
            mean and variance 
   
            Build and plot intensity histogram
        }
    
        Close Post Script file
      
   end module intmakehist