comparison of rgs model for 1e0102.2-7219 to the hetg data bi ccd cti correction for acis

Chandra X-Ray Observatory CXC

Paul Plucinsky EPIC Cal October 20061

1.1. Comparison of RGS Model for Comparison of RGS Model for 1E0102.2-7219 to the HETG data1E0102.2-7219 to the HETG data

2.2. BI CCD CTI Correction for ACISBI CCD CTI Correction for ACIS

Paul Plucinsky, Dan Dewey,Paul Plucinsky, Dan Dewey,& Joseph DePasquale& Joseph DePasquale



Gratuitous Pretty Pictures of E0102 Gratuitous Pretty Pictures of E0102

S3 Summed Data ~100 ksS3 Summed Data ~100 ks RGS Spectrum (Pollock 2006)RGS Spectrum (Pollock 2006)

Objective:Objective: develop a spectral model which can be used by RGS, HETG, EPIC & ACIS, etc.



What’s New Since the Iceland 2006 Meeting?What’s New Since the Iceland 2006 Meeting?

• Pollock’s model based on the RGS data has been used by Dan Dewy of the HETG team to compare to the HETG data• Dan adopted the RGS spectral model, including the normalizations• Dan developed a spatial model for the structure of the remnant• He created simulated datasets to compare the against the MEG and HEG data from the Chandra HETG

The overall agreement is encouraging !!!

All of the following work has been done by Dan, many thanks !!!

• Good agreement on the bright lines, some disagreement on the weaker lines



Dewey Spatial and Spectral ModelDewey Spatial and Spectral Model



MEG minus 1st order

Simulation

Comparison

KS test

OVIII OVIINeIXNeXMgXI



MEG plus1st order

Simulation

Comparison

KS test

MgXI NeX NeIX OVIII OVII



HEG minus 1st order

Simulation

Comparison

KS test

MgXI NeX NeIX



HEG plus1st order

Simulation

Comparison

KS test

MgXI NeX NeIX



Where Do We Go From Here ?Where Do We Go From Here ?

• Dewey analysis needs to be updated with latest response files for HRMA/ACIS/HETG• Line-based analysis needs to be updated with the latest response files for HRMA/HETG/ACIS• RGS data need to be re-analyzed with new background model for RGS • RGS and HETG teams agree on a model well before the IACHEC meeting in California• ACIS, MOS, and pn use the new model to fit the CCD spectra



2. CTI Correction in CIAO for S3 and S12. CTI Correction in CIAO for S3 and S1

• Penn State CTI corrector available since 2001• CXC response products for S1 and S3 used a position-dependent gain correction which recovers the true values of the PHs but does not improve the spectral resolution• S3 and S1 data will now be CTI-corrected in the events files provided to GOs• All TEN CCDs will be CTI-corrected as of CIAO and CALDB release in December 2006• small, but significant improvement in spectral resolution and QE uniformity



BI CTI correction: PH vs. Row # BI CTI correction: PH vs. Row #

Current CALDB: no CTI correction Prototype CALDB: CTI correction



BI CTI correction: PH vs. Row # BI CTI correction: PH vs. Row #



S3 CTI correction: Mn-K at the Aimpoint S3 CTI correction: Mn-K at the Aimpoint

No CTI correction:

FWHM~162 eV

With CTI correction:

FWHM~151 eV



S3 CTI correction: Mn-K at the Top S3 CTI correction: Mn-K at the Top

No CTI correction:

FWHM~182 eV

With CTI correction:

FWHM~157 eV



Current CALDB

No CTI

correction:

E0102 on S3

Red Chi=

1.44



BI CTI

correction:

E0102 on S3

Red Chi=

1.10



BI CTI

correction:

E0102 on S1

Red Chi=

1.57

comparison of rgs model for 1e0102.2-7219 to the hetg data bi ccd cti correction for acis

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