XMM EPIC MOS Steve Sembay EPIC Calibration Meeting Ringberg 2-5/April/2002 Broad-Band MOS v PN Cross-Calibration Study •8 Observations of 4 BL Lacertae Objects •MOS - SAS 5.3 (development version) event files •Pattern 0-12 (all X-ray) selected events •MOS Q20 and Q21 response matrices •CCF and LUX PSF correction •PN - Jan02 MPE processed events files •Pattern 0-4 (singles + doubles) selected events •PN - Nov01 (FF) and Jan02 (SW) response matrices •CCF PSF correction •Pile-up events excluded by pattern ratio analysis

XMM EPIC MOS Steve Sembay EPIC Calibration Meeting Ringberg 2-5/April/2002 Observation Summary

XMM EPIC MOS Steve Sembay EPIC Calibration Meeting Ringberg 2-5/April/2002 Analysis Method: •Define non-piled-up annulus from MOS1 data (use same for MOS2, pn). •Generate appropriate arf correction files. •Extract source and background spectra (although background mostly negligible) in the keV band. •Fit phabs * bknp model to MOS2 data…fold model through MOS1, MOS2 and pn instrument response. •Fit phabs * bknp model to pn data…fold model through MOS1, MOS2 and pn instrument response. •Examine DATA/MODEL ratio plots for trends. •Examine best-fit model parameters to instruments fitted individually.

XMM EPIC MOS Steve Sembay EPIC Calibration Meeting Ringberg 2-5/April/ % -5% +20% -20% Ratio Plot: DATA/MODEL MOS1 MOS2 PN Smoothed: MOS1 MOS2 PN +20% +5% -5% -20%

XMM EPIC MOS Steve Sembay EPIC Calibration Meeting Ringberg 2-5/April/2002 Effect of Q20 to Q21 PKS SW Med/Med CCF-PSF Q20Q21

XMM EPIC MOS Steve Sembay EPIC Calibration Meeting Ringberg 2-5/April/2002 Calibration of MOS1 Thick Filter PKS SW Thick/Med

XMM EPIC MOS Steve Sembay EPIC Calibration Meeting Ringberg 2-5/April/2002 MS FF Thin/Thin/ThinMS FF Thin/Thin/Thin

XMM EPIC MOS Steve Sembay EPIC Calibration Meeting Ringberg 2-5/April/2002 Mrk SW Thin/Thin/Thin

XMM EPIC MOS Steve Sembay EPIC Calibration Meeting Ringberg 2-5/April/2002 PKS SW Thin/Med/Med

XMM EPIC MOS Steve Sembay EPIC Calibration Meeting Ringberg 2-5/April/2002 Mrk SW Med/Med/ThickMrk SW Med/Med/Thick

XMM EPIC MOS Steve Sembay EPIC Calibration Meeting Ringberg 2-5/April/ Thin 8-44 Med Thick Med Thin Med Med Thick Thin Trends due to PSF ? --- CCF-PSF Corrected

XMM EPIC MOS Steve Sembay EPIC Calibration Meeting Ringberg 2-5/April/ CCF PSF LUX PSF Comparison of CCF and LUX PSF correction

XMM EPIC MOS Steve Sembay EPIC Calibration Meeting Ringberg 2-5/April/2002 Q20 - Q21 increases relative difference between model fits to MOS1 and MOS2 data in the high energy band. Q21 residuals better than Q20 in 2-3 keV band. Both MOS and PN show consistent residual features at different energies indicating narrow band calibration problems. MOS1 Thick filter calibration is incorrect. Energy correction due to PSF creates an increasing discrepancy between MOS1 and MOS2 as extraction radius increases. There is a systematic broad band difference between MOS and PN which is independent of Mode/Filter/Extraction radius. Interim Conclusions What do the spectral parameters tell us ?

XMM EPIC MOS Steve Sembay EPIC Calibration Meeting Ringberg 2-5/April/2002 Spectral Fit Parameters: Mrk 421 N H = 1.6e20 z = PKS 2155 N H = 1.36e20 z = MS 0737 N H = 3.2e20 z = PN Thick 0.89 (0.15) 1.77 (0.04) 0.69 (0.01) 2.59 (0.01) 1.37/1191 MOS2 Med 1.33 (0.15) 2.37 (0.02) 1.82 (0.11) 2.55 (0.03) 1.39/404 PN Med < (0.05) 0.73 (0.02) 2.82 (0.02) 1.38/720 MOS2 Med 1.36 (0.25) 2.66 (0.04) 1.59 (0.20) 2.90 (0.05) 1.22/266 PN Thin 3.60 (0.07) 1.63 (0.20) 0.64 (0.05) 2.35 (0.03) 0.99/475 MOS2 Thin 4.92 (0.10) 2.21 (0.05) 1.72 (0.90) 2.25 (0.05) 1.08/165 N H Γ 1 E B Γ 2 χ 2 υ