Matteo Guainazzi ESAC-ESA M.Guainazzi, "Status of EPIC-pn timing mode calibration", EPIC-BOC, Madrid, 23/3/2010

Implemented rate-dependent CTI for both EPIC-pn Timing and Burst Mode Align to fix of encircled energy correction bug in arfgen with SASv9.0 Why should we care? Mode used relatively seldom ( ≅ 5% of all observations in the XSA). However, basic mode for the X-ray binaries community Three main problems reported to the HelpDesk: Poor residuals at the Silicon and Gold edges Emission line of unknown origin at ≅ 1 keV in obscured sources Controversy on the very existence of relativistically broadened iron lines in Galactic Black Hole and Neutron Star systems M.Guainazzi, "Status of EPIC-pn timing mode calibration", EPIC-BOC, Madrid, 23/3/2010

Γ pn -Γ RXTE BM: 0.24±0.07 TM: 0.19±0.03 TM: 0.15±0.03 Simultaneous RXTE/XMM- Newton observations of GX339-4

M.Guainazzi, "Status of EPIC-pn timing mode calibration", EPIC-BOC, Madrid, 23/3/2010

Use the whole sample of 245 exposures in pn Timing Mode in the XSA Retain only sources with a count rate ≤400 s -1 to avoid pile-up Accumulate RAWY-dependent event lists Fit the distributions for singles, doubles, triples and quadruple events in the keV band with a function: PF(E) = a 0 + a 1 log(PI) + a 2 log(PI) 2 M.Guainazzi, "Status of EPIC-pn timing mode calibration", EPIC-BOC, Madrid, 23/3/2010

… singles fraction… doubles fraction M.Guainazzi, "Status of EPIC-pn timing mode calibration", EPIC-BOC, Madrid, 23/3/2010

4-7 keV7-9 keV

M.Guainazzi, "Status of EPIC-pn timing mode calibration", EPIC-BOC, Madrid, 23/3/2010

The recalibration of the PF as a function of RAWY yields on the average an improvement of the agreement between true and CCF However, full improvement requires the implementation of a spectral dependency of the PF for high (RAWY≥190) source position Recommendations: Release the CCF Release Note Open an SCR on SAS to cope with the HR-dependency M.Guainazzi, "Status of EPIC-pn timing mode calibration", EPIC-BOC, Madrid, 23/3/2010