xmm-newton epic current status - nasa · 2008. 5. 16. · 2 xmm-newton epic epic, both pn and mos...
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XMM-Newton EPICCurrent Status
2008 April – EPIC Cal/Ops meeting in Mallorca
2008 May – International Users Group – This presentation liberally
borrows from Matteo Guainazzi’s talk
http://xmm.esac.esa.int/external/xmm_user_support/usersgroup/20080506/index.shtml
XMM-Newton Calibration Page
http://xmm2.esac.esa.int/external/xmm_sw_cal/calib/index.shtml
EPIC Calibration Status Document
http://xmm2.esac.esa.int/docs/documents/CAL-TN-0018.pdf
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XMM-Newton EPIC
EPIC, both PN and MOS detectors are functioning very well
after eight and a half years
o All instruments essentially stable
o Loss of one MOS CCD due to a micrometeorite hit
This is not to say that more calibration isn’t necessary or that
there aren’t any issues that need to be addressed, however, there
have been major improvements and the status now is quite
good. No resting, however.
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XMM-Newton EPIC
Main Areas of Calibration/Software Improvements
MOS QE refinements
Pn CTI and gain correction refinements
Rate-dependent CTI correction for pn fast modes
Corrections for pn time jumps
Calculation of encircled energy correction with a 2-D
elliptical PSF
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XMM-Newton EPICCalibration Status
PSF: 2% on axis
Astrometry: Relative 1.5” rms, Absolute 2.0” rms
Relative Effective Area: +/- 5%
Absolute Effective Area: +/- 10%
Absolute Energy Scale: +/- 10 eV
Relative Timing: P/P < 10-8
Absolute Timing: <10-4 s
RGS Cross Cal: +/- 15%
Chandra Cross Cal: +/- 20%
Martin Stuhlinger’s USG Presentation
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XMM-Newton EPICFuture Work
EPIC
Off-axis 2-D psf characterization/calibration
Off-axis RGS obscuration correction
Improve gain/redistribution calibration
PN
PN rate dependent CTI correction – should work for burst and timing modes
Spatial exposure corrections
MOS
Improve the “patch” calibration