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Status of EPIC-pn Timing Mode calibration

Status of EPIC-pn Timing Mode calibration. Matteo Guainazzi ESAC-ESA. News in 2009. 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?

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Status of EPIC-pn Timing Mode calibration

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

  2. M.Guainazzi, "Status of EPIC-pn timing mode calibration", EPIC-BOC, Madrid, 23/3/2010 News in 2009 • 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

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

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

  5. M.Guainazzi, "Status of EPIC-pn timing mode calibration", EPIC-BOC, Madrid, 23/3/2010 Timing versus Burst Γpn-ΓRXTE BM: 0.24±0.07 TM: 0.19±0.03 TM: 0.15±0.03 Simultaneous RXTE/XMM- Newton observations of GX339-4

  6. M.Guainazzi, "Status of EPIC-pn timing mode calibration", EPIC-BOC, Madrid, 23/3/2010 Pattern fraction as a function of source position

  7. M.Guainazzi, "Status of EPIC-pn timing mode calibration", EPIC-BOC, Madrid, 23/3/2010 RAWY-dependent recalibration of PF • 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 0.7-10 keV band with a function: PF(E) = a0 + a1 log(PI) + a2 log(PI)2

  8. M.Guainazzi, "Status of EPIC-pn timing mode calibration", EPIC-BOC, Madrid, 23/3/2010 RAWY≥191

  9. M.Guainazzi, "Status of EPIC-pn timing mode calibration", EPIC-BOC, Madrid, 23/3/2010 RAWY=190

  10. M.Guainazzi, "Status of EPIC-pn timing mode calibration", EPIC-BOC, Madrid, 23/3/2010 RAWY=189

  11. M.Guainazzi, "Status of EPIC-pn timing mode calibration", EPIC-BOC, Madrid, 23/3/2010 RAWY=188

  12. M.Guainazzi, "Status of EPIC-pn timing mode calibration", EPIC-BOC, Madrid, 23/3/2010 1-10 keV observed vs. predicted … … singles fraction … doubles fraction

  13. M.Guainazzi, "Status of EPIC-pn timing mode calibration", EPIC-BOC, Madrid, 23/3/2010 HR dependency: singles-to-doubles

  14. M.Guainazzi, "Status of EPIC-pn timing mode calibration", EPIC-BOC, Madrid, 23/3/2010 HR dependency: triples-to-singles

  15. M.Guainazzi, "Status of EPIC-pn timing mode calibration", EPIC-BOC, Madrid, 23/3/2010 Energy-dependence PF ratio 4-7 keV 7-9 keV

  16. M.Guainazzi, "Status of EPIC-pn timing mode calibration", EPIC-BOC, Madrid, 23/3/2010 HR dependency: unrecogn’d-to-doubles

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

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