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edetect_chain (edetect_chain-2.13) [xmmsas_20050815_1803-6.5.0]

Use of edetect_chain Description Parameters Home Index

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Examples

1. Simultaneous detection run on the 5 standard energy bands of the MOS1 detector:

edetect_chain imagesets=''M1IMAGE_1000.FIT M1IMAGE_2000.FIT M1IMAGE_3000.FIT 
                          M1IMAGE_4000.FIT M1IMAGE_5000.FIT'' 
              eventsets=M1EVLI.FIT 
              attitudeset=atthk.dat 
              pimin=''200 500 2000 4500 7500''
              pimax=''500 2000 4500 7500 12000''
              ecf=''1.8035 1.9872 0.75557 0.26502 0.028794''

Note: Here we use energy conversion factors for the thin filter (see
http://xmmssc-www.le.ac.uk/pubdocs/SSC-LUX-TM-0059.ps.gz
for other ecf values). The default value of the ecf parameter is 1.0 (in units of $10^{11} counts\;cm^2\;erg^{-1}$), using the default value will lead to incorrect values in the FLUX columns of the eboxdetect and emldetect output source lists.

2. Simultaneous detection run on energy bands 2 and 3 and all EPIC detectors, use event set PNEVLI.FIT to calculate background due to out-of-time events:

edetect_chain imagesets=''M1IMAGE_2000.FIT M1IMAGE_3000.FIT 
                           M2IMAGE_2000.FIT M2IMAGE_3000.FIT
                           PNIMAGE_2000.FIT PNIMAGE_3000.FIT'' 
               eventsets=''M1EVLI.FIT M2EVLI.FIT PNEVLI.FIT'' 
               attitudeset=atthk.dat 
               pimin=''500 2000 500 2000 500 2000'' 
               pimax=''2000 4500 2000 4500 2000 4500''
               esp_withootset=yes
               esp_ooteventset=PNEVLI.FIT

Note: The calculation of the background due to out-of-time events is only used for EPIC PN data, the events set given in esp_ooteventset has to be an EPIC PN event list and should have the same TIME and FLAG selections as the EPIC PN input images.

3. Simultaneous detection run on PN images 2 and 3, using emldetect to determine the extent of the sources:

edetect_chain imagesets=''PNIMAGE_2000.FIT PNIMAGE_3000.FIT'' 
               eventsets=PNEVLI.FIT
               attitudeset=atthk.dat
               eml_fitextent=yes 
               pimin=''500 2000'' 
               pimax=''2000 4500'' 
               esp_nsplinenodes=12 
               eml_fitextent=yes 
               eml_ecut=0.93 
               usecalpsf=no

Note: The parameter eml_ecut determines the cutout radius of the sub-image used for the ML fit. eml_ecut is given as encircled energy fraction (EEF) of the EPIC PSF. For an on-axis source eml_ecut=0.93 corresponds to a cutout radius of $\sim$ 45 arcsec. The use of the analytical PSF (usecalpsf=''no'' will save computing time when performing extent fitting.


Use of edetect_chain Description Parameters Home Index

XMM-Newton SOC/SSC -- 2005-08-16