Example

The example below was produced using a gaussian point response, for two sources of strengths 20 and 40 counts, centred at (-10,-10) and (15,20) respectively.

ICL> EVSIM
  EVSIM Version 1.2-0
  OUT - Name of output event dataset > EV
  FIELDSIZE - Width of field in arcminutes /60/ >
  PIXSIZE - Pixel size in arcminutes /0.5/ >
  BACK - Number of background counts > 100
  SOURCEC - Number of counts per source > 20 40
  SOURCEP - Source positions /0,0/ > -10,-10,15,20
  There will be 94 background counts
  Source no. 1 has 19 counts
  Source no. 2 has 36 counts
  The PSF system can provide :
 
    ANAL              EXOLE             PWFC              WFC
 
  PSF - Choose PSF for simulated sources /'ANALYTIC'/ >
  No axis data present - using pixels
  PSF definitions available
 
  GAUSSIAN  - Gaussian response   TRIANGLE     - Triangular response
  TOPHAT    - Tophat function     FLAT_TRI     - Triangle with flat top
 
  MASK - Name of profile to use (select from above) /'GAUSSIAN'/ >
  Dataset pixels are 0.5 arcmin square
  AUX - Gaussian FWHM in dataset pixels > 5

ICL> EVBIN
  EVBIN Version 1.2-0
  INP - Enter name of input dataset /@EV/ >
  The available lists are:
   1  X_CORR
   2  Y_CORR
 
  Select the lists to be binned, by entering the index numbers.
  E.g. 1 2 3
  LISTS - Index numbers > 1 2
 
   X_CORR axis:
  The X_CORR data range is -30.25 to 30.25
  The intrinsic width is 0.5.
  BINSIZE1 - Enter binsize /0.5/ >
  This will give 121 X_CORR bins
   Y_CORR axis:
  The Y_CORR data range is -30.25 to 30.25
  The intrinsic width is 0.5.
  BINSIZE2 - Enter binsize /0.5/ >
  This will give 121 Y_CORR bins
  OUT - Enter name of the output dataset > IM
  A total of 149 events were binned