status of epic-pn timing mode calibration
DESCRIPTION
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? - PowerPoint PPT PresentationTRANSCRIPT
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 edgesEmission line of unknown origin at 1 keV in obscured ≅
sourcesControversy 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
M.Guainazzi, "Status of EPIC-pn timing mode calibration", EPIC-BOC, Madrid, 23/3/2010
M.Guainazzi, "Status of EPIC-pn timing mode calibration", EPIC-BOC, Madrid, 23/3/2010
M.Guainazzi, "Status of EPIC-pn timing mode calibration", EPIC-BOC, Madrid, 23/3/2010
Γpn-ΓRXTE
BM: 0.24±0.07
TM: 0.19±0.03TM: 0.15±0.03
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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 listsFit 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
M.Guainazzi, "Status of EPIC-pn timing mode calibration", EPIC-BOC, Madrid, 23/3/2010
M.Guainazzi, "Status of EPIC-pn timing mode calibration", EPIC-BOC, Madrid, 23/3/2010
M.Guainazzi, "Status of EPIC-pn timing mode calibration", EPIC-BOC, Madrid, 23/3/2010
M.Guainazzi, "Status of EPIC-pn timing mode calibration", EPIC-BOC, Madrid, 23/3/2010
M.Guainazzi, "Status of EPIC-pn timing mode calibration", EPIC-BOC, Madrid, 23/3/2010
… doubles fraction
M.Guainazzi, "Status of EPIC-pn timing mode calibration", EPIC-BOC, Madrid, 23/3/2010
M.Guainazzi, "Status of EPIC-pn timing mode calibration", EPIC-BOC, Madrid, 23/3/2010
M.Guainazzi, "Status of EPIC-pn timing mode calibration", EPIC-BOC, Madrid, 23/3/2010
M.Guainazzi, "Status of EPIC-pn timing mode calibration", EPIC-BOC, Madrid, 23/3/2010
7-9 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 NoteOpen 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