Author: Michael Wise

###### MIT CXC Documents

CONTENTS:

ACIS

acis_build_chip_gti Spec
acis_build_mask Spec
acis_detect_hotpix Spec
acis_make_bkgd Spec
acisreadcorr Spec
ARD ICD
CC bias summary
Check VFAINT background
Computation of CTI adjustments
Computation of FLTGRADE, GRADE, and PHA
Computation of ONTIME, DTCOR, and EXPOSURE
Computation of QUERY_VAL
Computation of X, Y, and TIMEs of Arrival of CC-Mode Events
Level 0 ICD
Level 1 ICD
Notes about the ACIS instrument geometry data
Pipeline Processing Caveats
Pipeline Processing Tools
STATUS bits in bad pixel files
STATUS bits in event files
Time-Dependent Gain ARD
Time-Dependent Gain Spec
ACIS-S detector geometry

HETG and LETG

- LETG + ACIS-S Rotation Issue
- Finding Zeroth Order Position

PSF and LSF

- Data Randomization Required enhancement in header keywords
- LSFPARM for HETG+ACIS-S validated for unrandomized datasets
- LSFPARM for LETG+HRC-S validated for unrandomized datasets
- LSFPARM for LETG+ACIS-S validated for unrandomized datasets

ARD
ISIS
Exposure Map
Miscellaneous

- CIAO 3 architecture White Paper and SDS presentation.
- Introduction to S-Lang (CXC S-Lang Class, Jan 2003)
- S-Lang use in data analysis (CXC S-Lang class, Jan 2003).

###### Subject: ACIS

| 11/08/04 | acis_build_chip_gti Spec This document describes a specification for the ACIS tool acis_build_chip_gti. Download postscript (102 K) or LaTeX source (8 K) of DRAFT Rev. 1.1 (11/08/04)

| 08/11/04 | acis_build_mask Spec This document describes a specification for the ACIS tool acis_build_mask. Download postscript (104 K) or LaTeX source (20 K) of Rev. 3.10 (08/11/04) Download postscript (103 K) or LaTeX source (19 K) of Rev. 3.9 (04/26/04) Download postscript (66 K) or LaTeX source (19 K) of Rev. 3.8 (11/21/03) Download postscript (66 K) or LaTeX source (18 K) of Rev. 3.7 (10/22/03) Download postscript (62 K) or LaTeX source (16 K) of Rev. 3.6 (10/21/03) Download postscript (62 K) or LaTeX source (16 K) of Rev. 3.5 (10/20/03) Download postscript (60 K) or LaTeX source (14 K) of Rev. 3.3 (09/25/03) Download postscript (60 K) or LaTeX source (14 K) of Rev. 3.2 (12/04/02)

| 06/16/06 | acis_detect_hotpix Spec This document describes a specification for the ACIS tool acis_detect_hotpix. Download postscript (115 K) or LaTeX source (23 K) of Rev. 1.11 (06/16/06) Download postscript (107 K) or LaTeX source (23 K) of Rev. 1.10 (05/10/06) Download postscript (112 K) or LaTeX source (22 K) of Rev. 1.9 (10/15/04) Download postscript (112 K) or LaTeX source (22 K) of Rev. 1.8 (06/30/04) Download postscript (111 K) or LaTeX source (22 K) of Rev. 1.7 (06/14/04) Download postscript (73 K) or LaTeX source (22 K) of Rev. 1.6 (03/29/04) Download postscript (70 K) or LaTeX source (21 K) of Rev. 1.5 (02/11/04) Download postscript (70 K) or LaTeX source (21 K) of Rev. 1.4 (01/05/04) Download postscript (70 K) or LaTeX source (21 K) of Rev. 1.3 (03/17/03)

| 05/11/06 | acis_make_bkgd Spec This document describes a specification for the ACIS tool acis_make_bkgd. Download postscript (87 K) or LaTeX source (17 K) of Rev. 1.4 (05/11/06) Download postscript (87 K) or LaTeX source (13 K) of Rev. 1.3 (04/08/05) Download postscript (81 K) or LaTeX source (11 K) of Rev. 1.2 (04/01/05) Download postscript (80 K) or LaTeX source (9 K) of Rev. 1.1 (03/16/05) Download postscript (75 K) or LaTeX source (5 K) of Rev. 1.0 (02/18/05)

| 10/01/02 | acisreadcorr Spec This document describes a specification for the computation of TIME for the ACIS tool acisreadcorr. Download postscript (51 K) or LaTeX source (5 K) of Rev. 1.3b (10/01/02)

| 03/15/00 | ACIS Analysis Reference Data Interface Control Document This document describes the formats of the Analysis Reference Data files used by the ACIS tools. Download postscript (113 K) of Rev 2.1 (03/15/00) Download postscript (119 K) of Rev 2.0 (11/30/99) Download postscript (525 K) or LaTeX source of Rev 1.3 (03/12/99)

| 05/03/05 | Continuous-clocking mode bias summary This file includes information from each of the 831 continuous-clocking mode bias files obtained from the CXC archive on March 1, 2005. Download FITS (416 K) summary through March 1, 2005 (05/03/05)

| 04/24/06 | Check VFAINT background This document describes an algorithm that can be used to search for potential cosmic-ray background events in the data for TIMED VFAINT mode obsevations. Download postscript (153 K) or LateX source (5 K) of Rev. 1.1 (04/24/06) Download postscript (150 K) or LateX source (5 K) of Rev. 1.0 (04/24/06)

| 08/11/06 | Computation of CTI adjustments This document describes how to compute the CTI-adjusted values of PHAS, PHA, ENERGY, PI, FLTGRADE, and GRADE for ACIS event data. Download postscript (134 K) or LateX source (36 K) of Rev. 6.0 (08/11/06) Download postscript (130 K) or LateX source (35 K) of Rev. 5.8 (02/02/06) Download postscript (132 K) or LateX source (36 K) of Rev. 5.7 (01/27/06) Download postscript (132 K) or LateX source (36 K) of Rev. 5.6 (01/17/06) Download postscript (132 K) or LateX source (35 K) of Rev. 5.5 (01/13/06) Download postscript (131 K) or LateX source (34 K) of Rev. 5.4 (12/19/05) Download postscript (132 K) or LateX source (36 K) of Rev. 5.3 (12/16/05) Download postscript (129 K) or LateX source (31 K) of Rev. 5.2 (12/13/05) Download postscript (129 K) or LateX source (31 K) of Rev. 5.1 (12/07/05) Download postscript (127 K) or LateX source (29 K) of Rev. 5.0 (12/06/05) Download postscript (119 K) or LateX source (30 K) of Rev. 4.10 (10/28/05) Download postscript (83 K) or LateX source (30 K) of Rev. 4.9 (04/13/04) Download postscript (83 K) or LateX source (30 K) of Rev. 4.8 (05/02/03) Download postscript (71 K) or LateX source (26 K) of Rev. 4.7b (09/09/02)

| 05/16/03 | Computation of FLTGRADE, GRADE, and PHA This document describes how to compute FLTGRADE, GRADE, and PHA for ACIS event data. Download postscript (64 K) or LateX source (7 K) of Rev. 1.4 (05/16/03) Download postscript (64 K) or LateX source (7 K) of Rev. 1.3b (09/09/02) Download postscript (280 K) of Rev. 1.1 (04/02/99)

| 09/09/02 | Computation of ONTIME, DTCOR, and EXPOSURE This document describes how to compute TIMEDEL, FLSHTIME, ONTIME, DTCOR, and EXPOSURE for ACIS event data. Download postscript (66 K) or LaTeX source (11 K) of Rev. 1.2b (09/09/02)

| 09/09/02 | Computation of QUERY_VAL This document describes how to compute QUERY_VAL for ACIS housekeeping data. Download postscript (59 K) or LaTeX source (13 K) of Rev. 1.1 (09/09/02) Download postscript (59 K) or LaTeX source (13 K) of Rev. 1.0 (08/26/02)

| 04/04/06 | Computation of X, Y, and TIMEs of Arrival of CC-Mode Events This document describes how to compute the sky coordinates and times of arrival of photons at the detector for CC-mode event data. Download postscript (95 K) or LaTeX source (12 K) of Rev. 4.6 (04/04/06) Download postscript (99 K) or LaTeX source (12 K) of Rev. 4.5 (01/14/05) Download postscript (61 K) or LaTeX source (11 K) of Rev. 4.4 (04/25/03) Download postscript (60 K) or LaTeX source (12 K) of Rev. 4.3b (09/09/02) Download postscript (58 K) or LaTeX source (91 K) of Rev. 4.1 (12/18/01) Download postscript (1.7 M) file of Chandra Calibration Workshop presentation, November 2002 (11/07/02)

| 10/23/00 | ACIS Level 0 Interface Control Document This document describes the formats of the Level 0 data products. Download postscript (124 K) or Framemaker source of Rev 3.2 (10/23/00) Download postscript (123 K) or Framemaker source of Rev 3.1 (08/10/00) Download postscript (122 K) or Framemaker source of Rev 3.0 (08/18/99) Download postscript (115 K) of Rev 2.11 (06/08/99) Download postscript (107 K) or Framemaker source of Rev 2.10 (04/05/99) Download older revisions of the ICD

| 09/11/00 | ACIS Level 1 Interface Control Document This document describes the formats of the Level 1 data products. Download postscript (60 K) or Framemaker source of Rev 2.3 (12/03/01) Download postscript (60 K) or Framemaker source of Rev 2.2 (09/11/00) Download postscript (59 K) or Framemaker source of Rev 2.1 (08/10/00) Download postscript (57 K) of Rev 2.0 (11/05/99) Download postscript (56 K) or Framemaker source of Rev 1.10 (08/05/99) Download postscript (55 K) or Framemaker source of Rev 1.9 (04/07/99) Download older revisions of the ICD

| 06/08/05 | Notes about ACIS instrument geometry data This document describes some self-consistency tests of the LSI coordinates of the ACIS CCDs. Download postscript (142 K) or LaTeX source of Rev 1.0 (06/08/05)

| 07/10/02 | ACIS Pipeline Processing Caveats This document describes caveats about ACIS pipeline-produced event data. HTML (07/10/02)

| 02/28/00 | ACIS Pipeline Processing Tools This document describes the ACIS pipeline processing tools. Download postscript (90 K) of DRAFT of Rev 2.1 (02/28/00) Download postscript (89 K) of Rev 2.0 (11/01/99)

| 05/04/06 | STATUS bits in bad pixel files This document describes the conditions for which the STATUS bits in ACIS bad pixel files are set. Download postscript (67 K) or LaTeX source (10 K) of Rev 1.10 (05/04/06) Download postscript (67 K) or LaTeX source (10 K) of Rev 1.9 (08/29/05) Download postscript (67 K) or LaTeX source (9 K) of Rev 1.8 (08/23/05) Download postscript (65 K) or LaTeX source (7 K) of Rev 1.7 (05/20/05) Download postscript (69 K) or LaTeX source (7 K) of Rev 1.6 (12/15/04) Download postscript (69 K) or LaTeX source (7 K) of Rev 1.5 (10/27/04) Download postscript (70 K) or LaTeX source (7 K) of Rev 1.4 (10/15/04) Download postscript (69 K) or LaTeX source (7 K) of Rev 1.3 (06/30/04) Download postscript (69 K) or LaTeX source (6 K) of Rev 1.2 (06/28/04) Download postscript (50 K) or LaTeX source (6 K) of Rev 1.1 (09/25/02)

| 04/24/06 | STATUS bits in event files This document describes the conditions for which the STATUS bits in ACIS event data files are set. Download postscript (71 K) or LaTeX source (11 K) of Rev 2.1 (04/24/06) Download postscript (71 K) or LaTeX source (11 K) of Rev 2.0 (04/06/06) Download postscript (71 K) or LaTeX source (9 K) of Rev 1.9 (03/29/06) Download postscript (70 K) or LaTeX source (8 K) of Rev 1.8 (11/17/05) Download postscript (51 K) or LaTeX source (8 K) of Rev 1.7 (03/05/03) Download postscript (51 K) or LaTeX source (8 K) of Rev 1.6 (10/18/02)

| 04/06/03 | Time-Dependent Gain ARD This document describes the format of the ARD file used to compute the time-dependent gain adjustment. Download postscript (53 K) or LaTeX source (5 K) of Rev 1.0 (06/04/03)

| 06/02/06 | Time-Dependent Gain Spec This document specifies how to apply the time-dependent gain adjustment. Download postscript (91 K) or LaTeX source (16 K) of Rev 1.6 (06/02/06) Download postscript (95 K) or LaTeX source (16 K) of Rev 1.5 (04/20/04) Download postscript (60 K) or LaTeX source (15 K) of Rev 1.4 (09/24/03) Download postscript (61 K) or LaTeX source (15 K) of Rev 1.3 (09/16/03) Download postscript (60 K) or LaTeX source (15 K) of Rev 1.2 (06/09/03)

| 11/15/04 | New ACIS-S Geometry File This document specifies the update on ACIS-S CCD chip corner positions and MEG grating period. Download postscript (562 K) or LaTeX source (16 K) of Rev 1.0 (11/15/04)

###### Subject: HETG and LETG

| 11/02/04 | LETG+ACIS-S Spurious Rotation Issue This document describes the LETG+ACIS-S spurious rotation issue. Download postscript (331 K) or LaTeX source (12 K) of Ver. 1.0 (11/02/04)

| 2004.06.11 | Technical Note: LETG/ACIS-S rotation compensation Modification to extraction region to compensate for anomalous rotation residuals. Download Postscript

| 03/23/06 | Finding Zeroth Order Position This document describes a new algorithm of detecting zeroth order position. Download postscript (238 K) or LaTeX source (76 K) of Ver. 1.1 (03/23/06)

| 03/27/99 | Transmission Grating L1.5 to Archive Interface Control Document A detailed description of Grating L1.5 (event diffraction coordinates) data products. Download Postscript LaTeX source Change-Orders. Previous version: Download Postscript LaTeX source

| 05/28/99 | Transmission Grating Level 2 to Archive Interface Control Document A description of Grating Level 2 data products (binned spectrum). Download Postscript LaTeX source Change-Orders. Previous version: Download Postscript LaTeX source

| 06/04/99 | Grating Tool Specifications: Level 1.5 LETG/HESF Region Mask Definitions and Wavelength Determination Download Postscript (25 pages); Download LaTeX source.

| 04/22/99 | Grating Tool Specifications: Level 1.5: ACIS Continuous-Clocking Mode Processing Download Postscript (10 pages); Download LaTeX source.

###### Subject: PSF

| 12/28/01 | ICD for the GRATING LSF LIBRARY A detailed description of the LSF Library files. download postscript ..... (943 K) download Latex Source ..... (23 K)

| 10/07/98 | PSF TOOL ICD The PSF tool ICD. download postscript ..... (56 K) download Latex Source ..... (3 K)

| 02/24/00 | LSF LIBRARY and TOOLS TECHNICAL REFERENCE The LSF Library and Tools Technical Reference. download postscript ..... (588 K) HTML .....

| 12/28/01 | LSF GUIDE The LSF Guide. download postscript ..... (437 K) HTML .....

| 06/10/04 | Data Randomization / New Header Keywords This document describes how we propose to implement additional FITS keywords into Level 1 Event products and higher. Download postscript (53 K) or LaTeX source (6 K) of Rev 0.2 (03/01/04) Download postscript (53 K) or LaTeX source (6 K) of Rev 0.3 (03/03/04) Download postscript (53 K) or LaTeX source (6 K) of Rev 0.4 (03/15/04) Download postscript (53 K) or LaTeX source (6 K) of Rev 1.0 (06/10/04)

| 05/03/04 | LSFPARM for HETG+ACIS-S validated for unrandomized datasets This document describes the quality of new non-randomized LSFPARM products for HETG+ACIS-S configuration. Download postscript (376 K) or LaTeX source (39 K) of Ver. 1.0 (04/26/04) Download postscript (372 K) or LaTeX source (40 K) of Ver. 1.1 (05/03/04)

| 05/03/04 | LSFPARM for LETG+HRC-S validated for unrandomized datasets This document describes the quality of new non-randomized LSFPARM products for LETG+HRC-S configuration. Download postscript (287 K) or LaTeX source (9 K) of Ver. 1.0 (05/03/04)

| 07/20/04 | LSFPARM for LETG+ACIS-S validated for unrandomized datasets This document describes the quality of new non-randomized LSFPARM products for LETG+ACIS-S configuration. Download postscript (181 K) or LaTeX source (26 K) of Ver. 1.0 (07/20/04)

###### Subject: Analysis Reference Data

| 3/26/99 | Exposure Maps and Gratings Data Level 1.5 and 2.0 Analysis Reference Data ICD Interface Control Document describing the reference data read by exposure map and gratings pipelines and tools. ACIS Spatial Contamination pages (2004.10.13 UPDATE) Download postscript (about 80 pages) or LaTeX source or LaTeX template for new files. Change-Orders.

| 04/21/98 | Spectroscopy Database: Analysis Reference Data ICD The format of the Spectroscopy Database files to be used in L2 spectral analysis is described here. Download postscript .... (511K) Download LaTeX source .... (40K ARD_template)

###### Subject: ISIS

| 1/8/99 | ISIS: Interactive Spectral Interpretation System Describes the functions we wish to include in the analysis system for high resolution X-ray spectra (currently under development). Download Postscript ..... (392 K)

###### Subject: Exposure Map

| 2/09/99 | Exposure Map Data Products ICD Download postscript or LaTeX source
|  | 2/08/99 | Aspect Histogram Processing and Data Products ICD Download postscript or LaTeX source (About 14 pages/1 MB de-compressed) |  | 09/11/2000 | Introduction to Exposure Maps Download postscript (12 pages, about 1 Mb uncompressed)

###### Subject: Miscellaneous

An Introduction to S-Lang

Talk by John E. Davis, from CXC S-Lang class (January, 2003)
(pdf)

Advanced S-Lang Applications

Talk by John C. Houck, from CXC S-Lang class (January, 2003)
(pdf) (ps)

Examples of S-Lang in Data Analysis

Notes by David Huenemoerder from CXC S-Lang classes (January, 2003)
(ps) (pdf)
The Slides (a less detailed version of the Notes):
(ps) (pdf)

| 12/13/2001 | CIAO 3 Interactive Analysis Planning Architecture design for interactive analysis and rapid prototyping. Download Postscript ..... Download Part 2 (summary for discussion, some Slang examples) .....

| 04/02/97 | AXAF Transmission Grating Diffraction Coordinates Describes the transformation from reported event positions to dispersion coordinates. Download Postscript ..... (101 K)

[ MIT/ASC Home page | Staff | Calibration | Analysis | Spectroscopy ]
[ Science Gallery | Software | Documentation | Links | Local Access ]

Last Updated: August 11, 2006 by GEA