| ID | Who | Status | Due | Subject |
Description |
Status | Resolution |
| 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,
MIT. |
| 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
http://hea-www.harvard.edu/MST/mirror/www/orbit/hrma_ea.html (on-orbit). |
| 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. |
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