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The EPIC-PN response matrix - update
Frank Haberl EPIC Cal meeting, VILSPA, 23.-24. March 2004
Known problems in PN6.6 / SAS6.0
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1) Redistribution at 400 eV
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2) Flat shelf
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3) Si and Au edges
Residuals in spectraused for gain fits at Au edge:
PKS 2155Mkn 4213C273MCG-6-30-15
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3) Gain at Au edge
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3) Si and Au edges - improvements
MCG-6-30-15240 ksec merged from 3 revolutions1.4 Million Counts1.1-4 keVbinned to at least 500 cts
dips at 1.80, 2.00 keVbump at 2.40 keV
2/dof = 1045/578 = 1.81
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3) Quantum efficiency around Si-K edge
EPIC-pn
EPIC-MOS singles
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3) EPIC-pn doubles
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3) EPIC-pn singles
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3) Trough in QE around 1800 eV ?
Approximation by Gaussian absorption line
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3) Gauss approximation
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3) Au edge in mirror effective area
Adjustment to mirroreffective areasfrom MOS Crab spectra15 eV shift + increases
Proposed fine adjustmentfrom pn spectrum ofMCG-6-30-15
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3) Test with adjusted mirror areas
2/dof improvement from 1045/578=1.81to 632/577=1.10