chandra calibration status recent releases current calibration projects cross-calibration between...
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![Page 1: Chandra Calibration Status Recent releases Current Calibration projects Cross-Calibration between Chandra and other X-ray telescopes Revisions](https://reader035.vdocuments.mx/reader035/viewer/2022062714/56649d415503460f94a1cb51/html5/thumbnails/1.jpg)
Chandra Calibration StatusChandra Calibration Status
Recent releases
Current Calibration projects
Cross-Calibration between Chandra and other X-ray telescopes
Revisions to the Chandra calibration web pages
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ACIS time-dependent gain corrections released in April, June and Oct.
HRC-I gain map for 2009 released in June.
HRC-I blank field background image released in June.
HRC-I background spectrum released in June
The ACIS-S4 blank field background files were reprocessed with the latest version of destreak and released in Oct.
The temperature-dependent cti-correction software was posted on the contributed software page in Oct.
Recent Calibration Products or Software Releases
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Status of ACIS CC Mode Calibration Status of ACIS CC Mode Calibration
MEG m=1
HEG m=1
MEG m=3
HEG 2 + MEG 4
Her X-1
Present Default – TE mode trap map CC-F mode trap map
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Status of ACIS CC Mode Calibration Status of ACIS CC Mode Calibration
Things to do:
1) Test CC-F mode trap map with HETG/ACIS-S CC-mode data
2) Generate a CC-F mode gain table
3) Generate a CC-F mode QE file for data taken prior to Dec, 2009 (i.e., data that did not include flight grade 66)
11.2 Crab Sco X-1
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HETG/ACIS-S CC-F Mode Observations of X-Ray Bright SourcesHETG/ACIS-S CC-F Mode Observations of X-Ray Bright Sources
HETG GTO target GX13+1
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Updates to the HRC-I Effective AreaUpdates to the HRC-I Effective AreaThe HRC-I QE has recently been updated to improve the cross-calibration between the HRC-I and other Chandra detectors using HZ43, PKS2155-304 and G21.5-09.
Target Obs. Rate Pred. N0007 %diff Pred. N0008 %diff
HZ43 3.88 3.88 3.46 8.7 3.91 0.9
PKS2155 1.54 1.64 6.5 1.53 0.6
G21.5-09 0.541 0.601 11 0.541 0.0
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PSF FeaturePSF Feature 7460
6119
Tau CMa
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PSF FeaturePSF Feature
ACIS-I
Ratio of counts between 0.5-1.0” in + and – Z direction (i.e., parallel to the SIM)
Tau CMa
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PSF FeaturePSF Feature
Tau CMa
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AR Lac Observation to Diagnose PSF AR Lac Observation to Diagnose PSF FeatureFeature
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Updates to the LETG/HRC-S First Order Effective AreaUpdates to the LETG/HRC-S First Order Effective Area
The next CALDB will contain updates to the LETG/ACIS-S source and background extraction regions and the fraction of events within the source extraction region.
Things to do:
1) Revise the HRC-S QE
2) Revise the LETG/HRC-S extraction region for self-consistent cross-calibration
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Update to the ACIS-I contamination Update to the ACIS-I contamination modelmodel
Version 9932 will be released as the default ACIS-I contamination model in Dec. 2010. No Changes will be made to the ACIS-S contamination model.
Comparison of two ACIS-I observations of AWM7 taken 10 years apart fit with the CALDB andV9932 versions of the ACIS-I contamination model.
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Update to the ACIS-I contamination Update to the ACIS-I contamination modelmodel
Cross-calibration of the ACIS-S and ACIS-I contamination models (as of Dec. 2010) using ACIS-I and ACIS-S observations of A1795 taken 4 years apart.
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Update to the ACIS-I contamination Update to the ACIS-I contamination modelmodel
Cross-calibration between the ACIS-S and ACIS-I contamination models using two observations of the Coma cluster taken 10 years apart.
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Continuing Studies of the ACIS-S Continuing Studies of the ACIS-S ContaminantContaminant
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Cluster Fluxes – XMM-Newton
Cross-Calibrating X-ray Detectors with Clusters of Galaxies: an IACHEC Cross-Calibrating X-ray Detectors with Clusters of Galaxies: an IACHEC Study (Nevalainen, David & Guainazzi) (astro-ph 1008.2102)Study (Nevalainen, David & Guainazzi) (astro-ph 1008.2102)
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Cluster Fluxes – PN/ACIS
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Summary of Cluster and Flux Cross-Calibration between XMM-Newton and Chandra
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Cross-Calibration of the X-Ray Instruments Cross-Calibration of the X-Ray Instruments Onboard the Chandra, INTEGRAL, RXTE, Suzaku, Onboard the Chandra, INTEGRAL, RXTE, Suzaku, Swift and XMM-Newton Observatories (Tsujimoto Swift and XMM-Newton Observatories (Tsujimoto et al. 2010) (astro-ph 1009.2812)et al. 2010) (astro-ph 1009.2812)
G21.5-09
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G21.5-09
Soft band = 2-8 keV
ACIS-S3
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G21.5-09XMM-Newton
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G21.5-09Cross-Calibration
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Chandra/Suzaku Cross-Calibration
PKS 2155-304
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Revisions to the Calibration Web Pages