Документ взят из кэша поисковой машины. Адрес оригинального документа : http://xmm.vilspa.esa.es/sas/8.0.0/doc/inthist/node8.html
Дата изменения: Wed Jul 2 05:37:38 2008
Дата индексирования: Fri Sep 5 18:40:30 2008
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XMM-Newton Science Analysis System


inthist (inthist-2.17.2) [xmmsas_20080701_1801-8.0.0]

Meta Index / Home Page

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