XMM-Newton Science Analysis System


elcbuild (elcbuild-1.9.1) [xmmsas_20141104_1833-14.0.0]

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Algorithm

      Read the input parameters

      Raise an error if the number of input time series is less than 2

      From the RATE extension header of the first time series
           Get the number of rows of the RATE extension (nRates)
           Get some mandatory keywords (e.g. TSTART, TSTOP, TIMEDEL, TIMEZERO)

      Do for input time series 2 to NTimeSeries
         Check keyword values against those of the first input time series
         (nRates, TSTART, TSTOP, TIMEDEL, TIMEZERO) 
         If not the same then raise an error and exit
      End Do

      Create the output dataset

      Propagate the keywords from the first time series to the output
      time series for both the primary and RATE extension headers.
     
      Do for each input time series (dataset)
          
          Read the RATE extension from file i
          Read the values of E_MIN, E_MAX from the header 
          Store these values as E_MINi, E_MAXi in the header of the
                RATE extension of the output file
          Get columns RATE, ERROR, BACKV, BACKE, FRACEXP
          Store corresponding arrays in matrix(NtimeSeries,nRates)

      End Do

      Write matrix in the RATE extension of the output dataset
      
      Release output dataset