|
par1 | frame time (in seconds) |
par2 | maximum number of photons to pile up |
par3 | grade correction for single photon detection |
par4 | grade morphing parameter (good grade fraction is assumed proportional to par4 where p is the number of piled photons) |
par5 | PSF fraction. Only this fraction will be treated for pile-up. Note that this is not the fraction of the PSF included in the extraction region but is the fraction of counts in the region which are from the point source whose pile-up is being modeled. For this model to work well the extraction region should be large enough to contain essentially all the PSF. |
par6 | Number of regions. The counts to be piled-up will be distributed among par6 regions, which will be piled-up independently. |
par7 | Value of FRACEXPO keyword in ARF. |
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Last modified: Friday, 23-Aug-2024 13:20:40 EDT
HEASARC Staff Scientist Position - Applications are now being accepted for a Staff Scientist with significant experience and interest in the technical aspects of astrophysics research, to work in the High Energy Astrophysics Science Archive Research Center (HEASARC) at NASA Goddard Space Flight Center (GSFC) in Greenbelt, MD. Refer to the AAS Job register for full details.