1. Marcus Kirsch, XMM-Newton European Space Astronomy Center Page 1 EPIC ESAC Correct treatment of fast mode ARFs Marcus G. F. Kirsch, G. Schoenherr, E. Kendziorra, M.J. Freyberg

2. Marcus Kirsch, XMM-Newton European Space Astronomy Center Page 2 EPIC ESACmenu recap fast mode operations Extraction region normalization treatment in fast modes arf generation window versus fast modes

3. Marcus Kirsch, XMM-Newton European Space Astronomy Center Page 3 EPIC ESAC Line 180- 199 Line 20 - 39 Line 0 - 19 CAMEX 1 st readout CAMEX 2 nd readout CAMEX 10 th readout CCD readout in Timing Mode Pseudo (macro) CCD: 64 x 200 macro pixel, contains information from 10 real CCD readouts

4. Marcus Kirsch, XMM-Newton European Space Astronomy Center Page 4 EPIC ESAC EPIC-pn Burst Mode Burst ModeBurst Mode fast transfer of pixels under PSF time resolution: 7 µs life time only 3 % Max. count rate (flux) point source [s -1 ] ([mCrab]) : 60000 (6300)Max. count rate (flux) point source [s -1 ] ([mCrab]) : 60000 (6300) Exposure in Burst Mode

5. Marcus Kirsch, XMM-Newton European Space Astronomy Center Page 5 EPIC ESAC Normalization pre 6.1 Arfgen assumed an extraction region with Y-extent: 200(Timing), 180 (Burst) ok wrong

6. Marcus Kirsch, XMM-Newton European Space Astronomy Center Page 6 EPIC ESAC Arfgen now scales with extraction region Y-extent: Y/200(Timing), Y/180 (Burst) Timing mode trivial Burst mode complicated, because part of PSF is leaking into fast shift recorded events during slow read out Normalization 6.1

7. Marcus Kirsch, XMM-Newton European Space Astronomy Center Page 7 EPIC ESAC Situation for Window modes  Arfgen takes into account: –PSF –Vignetting

8. Marcus Kirsch, XMM-Newton European Space Astronomy Center Page 8 EPIC ESAC Fast modes 6.1 Arfgen corrects for Y-extent of extraction region, but still not for PSF (and Vignetting  straight forward) PSF: –X-direction normal PSF distribution –Y-direction: –Direction towards CAMEX 99.99 % PSF –Direction opposite CAMEX 85 % PSF  2 dim PSF needs to be integrated not averaged  2 dim PSF needs to be integrated not averaged 120 arcsec