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|ID ||Who ||Status ||Due ||Subject
|CAT001 ||ASC ||DONE ||971024 ||IRIG clock errors
||Determine periods of occurrence of IRIG clock errors and develop strategy for compensating for IRIG errors.
||DONE ||ASC has fixed problems in raw files and is now processing data.
|CAT002 ||ASC ||DONE ||970528 ||Lost day-103 data
||Determine whether day-103 data not recorded on optical disk is present on XRCF hard drives. If so, transfer to ASC archive for CAT access.
||DONE ||Day 103 was during an IC repress; thus, no critical data were lost.
|CAT003 ||MST ||DONE ||970604 ||BND data products
||List intended BND data products, for review by other CAT members.
||DONE ||Access MST/ Dick Edgar e-mail on PS calibration page. (See CAT015.)
|CAT004 ||PS ||DONE ||970528 ||E-mail distribution list
||Compile e-distribution list for CAT.
||DONE ||Send CAT e-mail to distribution list axaf_cat at alph.msfc.nasa.gov.
|CAT005 ||MST ||DONE ||970702 ||HRMA ray-trace model
||Develop plan for distributing or providing access for running SAO's HRMA ray trace.
||DONE ||MST will provide ray files for each different CMDB configuration. The standard product will be for 10^4 rays; however, for requested specific cases, the MST will run more rays.
|CAT006 ||PS ||DONE ||970701 ||XRCF distances
||Obtain relevant distances between sources, mirrors, and detectors.
||DONE ||Access table XRCF distances through PS calibration page.
|CAT007 ||PS ||DONE ||970714 ||HRMA IAPs
||Explain meaning and specify period for each IAP and instances of axial error during IAP setting.
||DONE ||Access table XRCF distances through PS calibration page.
|CAT008 ||MIT ||DONE ||970529 ||Cross calibration of BNDs with ACIS CCDs
||Define an experiment to calibrate BNDs against BESSY calibration-transfer CCD and electronics, in the ACIS-2C, at the XRCF.
||DONE ||Terminate effort because BNDs will be directly calibrated at BESSY.
|CAT009 ||LETG ||DONE ||970602 ||Raw LETG spectra
||Provide access to LETG raw spectra of XSS sources, to facilitate HRC and BND analyses by use of information on spectral content.
||DONE ||Access phase-2 LETG spectra at www.rosat.mpe-garching.mpg.de/axaf.
|CAT010 ||HETG ||DONE ||970602 ||Raw HETG spectra
||Provide access to HETG raw spectra of XSS sources, to facilitate HRC and BND analyses by use of information on spectral content.
||DONE ||Access phase-1 OTG-HSI spectra at the HETG xrcf website.
|CAT011 ||HRC ||DONE ||971015 ||HRC pore-angle dependence
||Provide information on dependence of HRC QE on pore angle.
||DONE ||Access table of HRC-I pore-angle dependence, from the HRC Calibration page.
|CAT012 ||HRC ||DONE ||970924 ||HRC flat fielding
||Provide results from HRC flat-fielding measurements
||DONE ||HRC has provided links to tables of flat-field results, under Calibration Data Products on the HRC Calibration page.
|CAT013 ||ASC ||DONE ||970716 ||Data products to ASC
||Determine which data products the ASC requires from the SI and BND teams.
||DONE ||Access list of ASC-required calibration data products at
the ASC and, for grating processing,
|CAT014 ||PS ||DONE ||970528 ||Calibration URLs
||Compile list of URLs for CAT.
||DONE ||URLs are now accessible via ASC or PS web sites.
|CAT015 ||ALL & ASC ||DONE ||970910 ||Adequacy of BND data products
||Review MST list of intended BND data products to evaluate adequacy.
||DONE ||All teams have had opportunity to comment on adequacy of MST's BND data products. Access MST description through PS calibration page.
|CAT016 ||MIT ||DONE ||971119 ||ACIS HST and telemetry rates
||Demonstrate that ACIS high-speed-tap and telemetry data are consistent.
||DONE ||All HST and telemetry data analyzed thus far give consistent results, provided the bias is treated properly.
|CAT017 ||MIT ||DONE ||970702 ||ACIS grade selection
||Recommend interim grade selection for processing ACIS calibration data.
||DONE ||Interim ACIS selection for calibration processing is ASCA grades 0, 2, 3, 4, & 6, to be updated by end of year.
|CAT018 ||PS ||DONE ||970710 ||Misidentified EIPS target
||ACIS and HETG data show that the putative Zr-L target may be Nb-L at 2.166 keV.
||DONE ||PS confirms that all putative Zr targets are indeed Nb and have been since pre-VETA.
|CAT019 ||ASC ||DONE ||980501 ||De-dithering problem
||De-dithered data produce blurred images.
||DONE ||Ball confirmed problem; however, no SI requires FAM de-dithering to meet calibration requirements. Access FAM transformation equations and other information from Ball on
PS Cal FAM information
page. HRC concludes that blur results from 5-to-10-micron ringing which settles in a couple seconds.
|CAT020 ||PS ||DONE ||970807 ||Visible flux from test light
||Visible flux from light used for ACIS light-leak check is unknown.
||DONE ||Visible flux at HRMA from test light is 5 10^-3 lux, 2 10^9 ph cm^-2 s^-1 (for 550 nm wavelength).
Light's battery is nearly dead, so flux may have been as much as 3 times greater (plugged-in value) during ACIS test.
|CAT021 ||PS ||DONE ||971015 ||EIPS spot pinhole images (see CAT045)
||X-ray surface-brightness distribution of EIPS targets is needed for ray traces.
||DONE ||HRI data using EIPS is available upon request to Galen.Zirnstein at msfc.nasa.gov
|CAT022 ||PS ||DONE ||970801 ||CMDB for flat-fielding measurements
||ACIS and HXDS teams need CMDB for flat-fielding phases (periods I and J).
||DONE ||Access as-requested I and J CMDBs (tab-delimited files) through PS calibration page.
|CAT023 ||PS ||DONE ||970903 ||LETG axial position
||Analysis of the LETG wavelength scale indicates that the LETG may be displaced axially (with respect to the focal plane) by 7 mm.
||DONE ||TRW XC04 6.2.4 reports that measured distance between CAP CL and LETG origin is 60.024 in (1524.6 mm).
|CAT024 ||PS ||DONE ||971015 ||IRAF I*2 limitation
||IRAF image pixels are specified in I*2 format, which precludes processing of HRC-S images. ASC is awaiting updated IRAF software.
||DONE ||New IRAF release removes limitation and ASC has begun processing LETG--HRC-S data.
|CAT025 ||ACIS ||DONE ||970910 ||ACIS true integration time
||When telemetry saturates, ACIS drops full frames from some CCDs. Consequently, the FITS data files do not currently give the true integration time.
||DONE ||ACIS has determined that existing software is adequate for XRCF calibration analysis.
|CAT026 ||MST ||DONE ||970910 ||HXDS aperture and efficiency ratios
||HXDS flat-field (series-J) measurements provide information on FPC and SSD aperture and efficiency ratios.
||DONE ||Access from MST simulations & analysis homepage, under HXDS Information.
|CAT027 ||MST ||DONE ||970911 ||Errors in sizes of HXDS apertures
||Errors in sizes of HXDS apertures are not known.
||DONE ||Access table of nominal apertures and estimated uncertainties from
MST simulations & analysis homepage,
under HXDS Information. Also see SAO/ Brad Wargelin's comments in 11 Sep 1997 e-mail.
|CAT028 ||PS ||DONE ||980108 ||SSD dead-time correction (see CAT054)
||Accurate SSD dead-time correction requires use of pulser. Pulser-based dead-time corrections made by MST and by PS do not agree.
||DONE ||PS and MST have obtained consistent pulser-based dead-time corrections for SSD measurements.
|CAT029 ||MST ||DONE ||971222 ||HXDS modeling workshop
||Analysis of FPC and SSD data should be performed consistently by all parties.
||DONE ||MST will hold a workshop on Feb 10, at SAO Phillips Auditorium, to discuss models and model parameters to be used in analyzing FPC and SSD data.
|CAT030 ||ASC ||DONE ||980212 ||Configuration control for models (see CAT058)
||Consistent analysis and performance prediction requires use of well-defined models, which are under configuration control.
||DONE ||ASC hosted Models Management meeting (Feb 12 at SAO) to address this issue. Planning and implementation will be tracked under CAT058.
|CAT031 ||PS ||DONE ||971125 ||Bearden's list of wavelengths
||All calibration analyses shall use the Bearden list of wavelengths for all lines and edges.
||DONE ||PS Calibration page now links to Bearden's list of wavelengths for K and L lines and to scanned Rev. Mod. Phys. tables for all lines.
|CAT032 ||MST ||DONE ||970910 ||HXDA positions during calibration
||Calculation of x-ray flux requires knowledge of HXDA position.
||DONE ||MST confirms that BND and HXDA positions were the same (+/- 0.25 in) during all calibration phases, including rehearsal and flat fielding.
|CAT033 ||HRC ||DONE ||970825 ||HRC aperture for effective area
||Quoted HRC effective area does not specify aperture.
||DONE ||Quoted HRC effective areas include all events within a radius of 1500 pixels (9.64 mm).
|CAT034 ||ACIS ||DONE ||980401 ||ACIS pile-up correction
||Analysis of ACIS data requires an approach for dealing with pile up of ACIS counts for a variety of situations.
||DONE ||MIT & PSU ACIS teams distributed description of 8-point approach.
|CAT035 ||ASC ||DONE ||970909 ||Pipeline products
||CAT members require access to calibration pipeline products generated by ASC.
||DONE ||Access information on reprocessed XRCF tests through these
tables. Original processing, stored by "day" through the path /data/prod1/pipe, is available through mirrored sites at ASC and OCC
(fleadh.harvard.edu, sisko.harvard.edu, ascsvr3.harvard.edu) or through the path /data/prod2/pipe.
Address questions about accessing these data to Bruce Wyshak.
|CAT036 ||ASC ||DONE ||970909 ||ASC point of contact for calibration data
||CAT members need a contact to facilitate access to calibration data and pipeline products.
||DONE ||Bruce Wyshak (617-496-7213, bwyshak at head-cfa.harvard.edu) is the ASC's point of contact for accessing XRCF data and pipeline products.
|CAT037 ||LETG ||DONE ||970910 ||LETG spectral resolution
||PS requests a quantitative comparison of measured to model spectral resolution.
||DONE ||LETG has provided a quantitative comparison of measured to model spectral resolution, in its preliminary report.
|CAT038 ||HETG ||DONE ||970923 ||rdb_read IDL procedure
||rdb_read IDL procedure is useful for those CAT members who use IDL.
||DONE ||Access rdb_read.pro, rdb_write.pro, and rdb_parm.pro from ~dd/idl/useful at MIT and SAO, or see MIT/ Dan Dewey's 23 Sep 1997 e-mail. Also see
MST's rdb page for more specifics on the rdb format.
|CAT039 ||HETG ||DONE ||980513 ||HETG period discrepancy
||The period inferred from XRCF measurements differs from the that determined in subsystem calibration by about 500 ppm.
||DONE ||HETG determined that cause is slightly incorrect Rowland spacing.
|CAT040 ||PS ||DONE ||970903 ||Filter transmission to Nb-L
||The putative EIPS Zr target was actually Nb, thus the specified filter transmission requires correction.
||DONE ||Filter-transmission tables give absorption depth in line, which value remains valid, but line energy changes from 2.04 keV (Zr-L) to 2.16 keV (Nb-L).
|CAT041 ||MST ||DONE ||971119 ||Effect of IRIG errors on BND analysis
||IRIG clock errors may affect analysis of BND data.
||DONE ||MST determined that IRIG clock errors have no efect on BND data.
|CAT042 ||PS ||DONE ||980114 ||HSI processing for LETG PIGS measurements
||LETG team is waiting for processed HSI data for LETG PIGS measurements.
||DONE ||ASC has processed LETG PIGS data; LETG team is obtaining needed data.
|CAT043 ||PS ||DONE ||971015 ||AXAF CAT mailing list
||Individual e-mail addresses in distribution list axaf_cat alph.msfc.nasa.gov are not public.
||DONE ||Access axaf_cat.lis via anonymous FTP from xanth.msfc.nasa.gov, cd pub/xray/cat_docs.
|CAT044 ||PS ||DONE ||971119 ||Location of HRMA node
||TRW states that HRMA node is 18.1 mm behind CAP datum A. How is the node determined and what is its energy dependence?
||DONE ||TRW reports that node is determined, by construction, from EKC data obtained with visible light.
|CAT045 ||PS ||DONE ||980309 ||Maps of EIPS spot (see CAT021)
||MST needs maps of EIPS spot, as input for ray-trace analysis.
||DONE ||Access EIPS spot maps through PS Calibration page.
|CAT046 ||PS ||DONE ||971210 ||Template for beam-uniformity data
||ASC needs template for data files from PS beam-uniformity analysis, in order to prepare analysis software.
||DONE ||PS provided template for data files, primarily RDB tables.
|CAT047 ||ASC ||DONE ||980114 ||Data not found at mirror site
||Some BND data files seem not to be available at mirror site.
||DONE ||ASC has located files and placed on mirror site.
|CAT048 ||MST ||DONE ||980304 ||JMKmod in XSPEC v10
||The MST implemented JMKmod in XSPEC v9, which doesn't automatically give correct C-statistic; however, v10, which is now available, does.
||DONE ||MST has implemented JMKmod in XSPEC v10, with ASC suggestions.
|CAT049 ||PS ||DONE ||980318 ||Jump across Mn-K edge
||MST fits to FPC spectra for Mn-K-filtered Fe-K requires a jump across the Mn-K edge which is inconsistent with Henke tables.
||DONE ||Assay report accompanying Mn-K filter shows 1.25% Pb impurity, which accounts for discrepancy discovered by MST.
|CAT050 ||MST ||DONE ||980429 ||LETG measurement of Al-Ka spectrum
||FPC spectra show mean energies in 2nd and 3rd order differ from 2 and 3 times Al-Ka energy.
||DONE ||Examined possible causes for "incorrect" energies in higher order, but did not solve mystery. Discontinue effort because goal of measurement doesn't require solution.
|CAT051 ||MST ||DONE ||980304 ||Channel offset between JMKmod and Hypermet
||The channel offsets for JMKmod differ by 1+mu or 1.5 from those in Hypermet.
||DONE ||Correct channel offset is 1+mu, 1 from convention for numbering lowest channel and mu from including primary electron with secondary electrons in the charge cloud.
|CAT052 ||MST ||DONE ||980610 ||SSD_X energy scale
||The accuracy of the BESSY crystal monochromator limits the energy-scale accuracy for SSD_X.
||DONE ||MST established method for determining the SSD_X energy scale, using ensemble fitting of fluorescence peaks and other spectral features.
|CAT054 ||PS ||DONE ||980401 ||SSD dead-time correction - 2 (see CAT028 & 064)
||The influence of pile-up with the pulser further complicates determining the proper dead-time correction for the SSDs.
||DONE ||Make dead-time correction for the SSDs by summing pulser and pulser+photon events. See also
HXDS Current Topics page. CAT064 treats related issue of SSD pile up, especially for continuum measurements.
|CAT055 ||PS ||DONE ||980513 ||Energy interpolation for monochromator maps
||Beam-uniformity measurements were not performed at all energies for which the monochromators were used during the AXAF calibration.
||DONE ||Completed HIREFS model for interpolating maps in energy; developed strategy for treating DCM data.
|CAT056 ||PS ||DONE ||980513 ||Spatial fitting to monochromator maps
||Beam-uniformity measurements did not always extend to position of the FPC_Hs.
||DONE ||Completed HIREFS model for extrapolating maps to FPC_H positions; developed strategy for treating DCM data.
|CAT058 ||ASC ||DONE ||980513 ||Models management plan (see CAT030)
||AXAF teams require access to one another's models in order to complete their respective calibrations.
||DONE ||ASC provided list of intended data products. ASC will populate data base of calibration products, accessible off ASC Cal web page, and then implement revision control and notification.
|CAT059 ||ASC ||DONE ||980401 ||ACIS model
||ASC requires a means for generating ACIS response matrices.
||DONE ||ACIS/MIT/ Mark Bautz presented a schedule for delivery to the ASC of capability for generating response matrices of ACIS CCDs.
|CAT060 ||ASC ||DONE ||980513 ||LETG efficiency models
||The multiplicity of models for the LETG efficiency may lead to confusion.
||DONE ||ASC will adopt MPE's model for the LETG efficiency.
|CAT061 ||ASC ||DONE ||980226 ||As-run CMDB
||An as-run CMDB would facilitate completion of the calibration analysis.
||DONE ||Provide access to an initial "as-run" CMDB and e-mail address for sending corrections; update and correct as errors are reported.
|CAT062 ||PS ||DONE ||980429 ||Project Science logs
||Project Science logs may facilitate completion of the calibration analysis.
||DONE ||Access Project Science calibration logs from PS Cal page.
|CAT063 ||PS ||DONE ||980318 ||Data Systems representative
||ASC/ Bruce Wyshak is leaving, so CAT now lacks Data Systems representation.
||DONE || ASC/ Peppi Fabbiano identified Dong-Woo Kim (dkim at cfa.harvard.edu, 617-496-7852) as contact for data processing.
|CAT064 ||PS ||DONE ||980429 ||SSD pile-up correction (see CAT054)
||Counting pile up in the SSD affects accuracy of the measurement, particularly for continuum measurements.
||DONE ||Determined that SSD pile-up is understood and can be adequately modeled where necessary.
|CAT065 ||MST ||DONE ||980610 ||Ray-trace simulations for PIGS
||Existing ray files treat PIGS as a point source, whereas it is significantly extended in the cross-dispersion direction.
||DONE ||Access ray files using characterized PIGS spot at http://hea-www.harvard.edu/MST/simul/simul-home.pl.
|CAT067 ||ASCDS ||DONE ||980513 ||Incomplete processing
||ASC/ Data Systems has not completed processing of XRCF data.
||DONE ||ASCDS provided a schedule (indicating percent completion) for processing of ASC data. Send specific requests to dkim at cfa.harvard.edu, with copies to cjones at cfa.harvard.edu, odell at cosmos.msfc.nasa.gov, and swartz at alph.msfc.nasa.gov.
|CAT068 ||MST ||DONE ||980617 ||HRMA effective area
||CAT members require a best value for the HRMA effective area, in order to complete "final" calibration reports.
||DONE ||MST/ Ping Zhou placed the tables, PS files, and their descriptions at
http://hea-www.harvard.edu/MST/mirror/www/xrcf/hrma_ea.html (XRCF) and
|CAT069 ||MST ||DONE ||980622 ||FPC absolute efficiencies
||CAT members require best values for HXDS absolute efficiencies, in order to complete "final" calibration reports.
||DONE ||MST/ Dick Edgar placed the currently best-available calibration at
http://hea-www.harvard.edu/MST/simul/xrcf/HXDS/ under "Quantum Efficiency".
|CAT070 ||MST ||DONE ||980623 ||HSI efficiency vs energy and pore angle
||CAT members require current model for dependence of the HSI efficiency upon energy and pore angle.
||DONE ||MST/ Ian Evans e-mailed to axaf_cat the currently best available HSI efficiency vs. energy and pore angle.