Документ взят из кэша поисковой машины. Адрес оригинального документа : http://xmm.vilspa.esa.es/sas/5.4.1/doc/inthist/node8.html
Дата изменения: Fri Jan 10 22:42:04 2003
Дата индексирования: Sat Dec 22 08:27:24 2007
Кодировка:
Поисковые слова: star

XMM-Newton Science Analysis System


inthist (inthist-2.13.2) [xmmsas_20030110_1802-5.4.1]

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Algorithm

inthist is a perl script 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