Calculation of a total Count Rate

 

The calculation of the total count rate in a detector can be done similar to that of an integrated energy flux by using the folding option. In this case the integration boundaries are fixed by the energy acceptance of the chosen detector, whose properties option must be given by the appropriate calibration files.

Midas 001> $edt count_rate.par
 cal
 fold
 cor_file   exsas_cal:effarea_pspcb
 res_file   exsas_cal:drmpspc
 model      powl(1,2)
 par 1      1.0
 par 2      -1.5

Midas 002> model/spectrum count_rate

 Got spectral parameters from      count_rate.par.
 Got corrected effective area from exsas_cal:effarea_pspcb.
 Got detector response matrix from exsas_cal:drmpspc.

 DATA SET    1

 MODEL   1  POWL(1,2)
 PARAMETER   1 1.0
 PARAMETER   2 -1.5
 energy range from .71345E-01 keV to   3.01     keV
 count rate  =  5.009E+02 counts/s

  The next example shows only another variation to get the same result. The calibration files are given directly as parameters of the command line.

Midas 001> $edt count_rate.par
 cal
 fold
 model      powl(1,2)
 par 1      1.0
 par 2      -1.5

Midas 003> model/spec count_rate ? ? exsas_cal:effarea_pspcb exsas_cal:drmpspc
 Got spectral parameters from      count_rate.par.
 Got corrected effective area from exsas_cal:effarea_pspcb.
 Got detector response matrix from exsas_cal:drmpspc.

 DATA SET    1

 MODEL   1  POWL(1,2)
 PARAMETER   1 1.0
 PARAMETER   2 -1.5
 energy range from .71345E-01 keV to   3.01     keV
 count rate  =  5.009E+02 counts/s