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CalDB 4.8.4.2 Release Notes

NOTICE: CalDB 4.8.4.2 has not been released to the public.

SDP Installation Date: 2019-10-02T14:00:00 (UTC)

I. INTRODUCTION

CalDB 4.8.4.2 is an upgrade to the Chandra CalDB, which includes the following items:

HRC-S GAPLOOKUP Version N0006

For the CIAO 4.12 / CalDB 4.8.4.2 release notes see How CalDB 4.8.4.2 Affects Your Analysis.

II. SUMMARY OF CHANGES

A. HRC-S GAPLOOKUP Version N0006

Location:	$CALDB/data/chandra/hrc/gaplookup/
Filename:	hrcsD1999-07-22gaplookupN0006.fits

As per the CalDB 4.8.3 release notes, a fix has been released in the HRC-S GAPLOOKUP table (version N0005) as of 23 May 2019 to correct a small error in the U-direction positions of the HRC-S plate edges. These plate edge position corrections were implemented as keywords (HRC_OFF_X and HRC_OFF_Y) in the corresponding GAPLOOKUP BINTABLE headers (U-direction only).

After the release of CalDB 4.8.3 , it was pointed out internally that the two new keyword names HRC_OFF_X and HRC_OFF_Y are actually nine characters long instead of the FITS interoperability requirement of 4 to 8 characters. We have since agreed that these keyword names should be corrected in both cases. The modified keyword names are HRC_OFFX and HRC_OFFY, and have been implemented in the HRC-S GAPLOOKUP file version N0006. The old keywords have been removed.

The keyword name changes require that the software (specifically hrc_process_events) be modified as well. For Standard Data Processing, this change was included in DS10.8.1, released on 02 October 2019. Hence CalDB 4.8.4.2 was installed simultaneiously in processing with the DS 10.8.1 installation. For CIAO, the modification to hrc_process_events is to be released with CIAO 4.12 on 17 December 2019. A simultaneous CalDB upgrade including the updated GAPLOOKUP file above will be required.

For technical details, see the CalDB 4.8.3 release notes under Technical Details Section C, "HRC-S GAPLOOKUP Table Keword Additions".

PIPELINES/TOOLS AFFECTED:

HRC Level 1 processing tool hrc_process_events

CIAO script chandra_repro uses hrc_process_events to reprocess HRC-S observation data. Only HRC-S data are affected by this change.

THREADS AFFECTED:

Reprocessing Data to Create a New Level=2 Event File for HRC-S data sets only.

Analysis Notes

Matching CIAO and CALDB Versions

CALDB 4.11.5 should not be used unless you are running CIAO 4.16 or later versions!

Are your versions mismatched? Time to upgrade CIAO and CALDB!

News

21 Aug 2024 [New]

CalDB 4.11.5 has been released to the public. Included in this release are HRC-S QE version N0017, and QEU version N0020 file sets as well as two new ACA-P DARK_CURR files (periodic updates #8), which do not affect CIAO. See the CalDB 4.11.5 Release Notes for details.

21 Aug 2024

CalDB 4.11.3 has been released to the public. Included in this release is an updated HRC-S QEU time-dependent file set version 19 (34 new files), as well as four new ACA-P DARK_CURR files (periodic updates #7), which do not affect CIAO. See the CalDB 4.11.3 Release Notes for details.

06 Jun 2024

CalDB 4.11.2 has been released to the public. Included in this release is an updated HRC-I QE time-dependent file set version 15 (38 new files). See the CalDB 4.11.2 Release Notes for details.

18 Apr 2024

CalDB 4.11.1 has been released to the public. Included in this release are the new ACIS "warm-temperature" CTI corrections vN0012, and an updated HRC-S QEU N0018 file set (33 new files). Also included are set #6 of the PCAD ACA-primary DARK_CURR (dark current) image files. See the CalDB 4.11.1 Release Notes for details.

12 Dec 2023

CalDB 4.11.0 has been released to the public. Included in this release are the new ACIS "warm-temperature" CTI corrections vN0011, and an updated HRC-I QE N0014 file set (37 new files). Also included are set #5 of the PCAD ACA-primary DARK_CURR (dark current) image files and the Cycle 26 PIMMS Effective Area configuration files, neither of which affect CIAO users. See the CalDB 4.11.0 Release Notes for details.

14 Dec 2023

CfP Cycle 26 Release Cycle 26 PIMMS Effective areas information, ACIS and GRATING sample (G)RMFs and (G)ARFs for proposal planning by non-CIAO users.

14 Sep 2023

CalDB 4.10.7 has been released to the public. Included in this release are the latest HRC-S QE Uniformity data sets (version N0017) including one addtional data set effective for OBS_IDs taken after the HRC-S restart. Also included are more PCAD ACA-primary DARK_CURR (dark current) image files, which do not affect CIAO users. See the CalDB 4.10.7 Release Notes for details.

22 Mar 2023

CalDB 4.10.4 has been released to the public. Included in this release are the latest ACIS T_GAIN (time-dependent gain) updates, which will be updated annually rather than semiannually going forward. Also included with this release are PCAD ACA-primary DARK_CURR (dark current) image files, which do not affect CIAO users. See the CalDB 4.10.4 Release Notes for details.

15 Dec 2022

15 Nov 2022

CalDB 4.10.2 has been released to the public. Included in this release is the latest ACIS OBF Contamination (CONTAM) model (v N0015) upgrade, which adjusts for recent (2020-2022) increases in the contamination rate relative to the older model (v N0014). See the CalDB 4.10.2 Release Notes for details.

16 Jun 2022

CalDB 4.9.8 has been released to the public. Included in this release are PCAD ALIGN file updates (18 new files, six-month intervals, extending from 2013-2021); HRC-I/Grating angle corrections in the PIXLIB GEOM file vN0007; HRC-S QE Uniformity upgrade version N0016 with and additional new file for new observations. See the CalDB 4.9.8 Release Notes for details.

24 Mar 2022

CalDB 4.9.7 has been released to the public. Included in this release are ACIS T_GAIN upgrades for Epochs 85+86 (effective 2021-05-02, finalized) and epochs 87+88 (effecive 2021-11-01, provisional), and expanded FP_TEMP boundary conditions for certain ACIS CalDB files applicable to current and future datasets, to accommodate warmer ACIS calibration observations to be taken in the near future. See the CalDB 4.9.7 Release Notes for details.

24 Sep 2021

CalDB 4.9.6 has been released to the public. Included in this release are ACIS T_GAIN upgrades for Epochs 83+84 (effective 2020-11-01, finalized) and epochs 85+86 (effecive 2021-05-02, provisional), HRC-S T_GMAPs v4, QE v16, and QEU v15, as well as HRC-I QE v13. See the CalDB 4.9.6 Release Notes for details.

29 Apr 2021

CalDB 4.9.5 has been released to the public. Included in this release are ACIS T_GAIN upgrades for Epochs 81+82 (effective 2020-05-02, finalized) and epochs 83+84 (effecive 2020-11-01, provisional), as well as a new ACIS-S3 CTI correction file for observations taken since 2020-01-01. HRC-I/LETG +/- 1st order LSF parameter files have also been added. See the CalDB 4.9.5 Release Notes for details.

16 Dec 2020

CalDB 4.9.4 has been released to the public. Included in this release are the ACIS CONTAM N0014 upgrade, an HRC-S QEU N0014 upgrade with 29 new files for the library, and a delayed upgrade to the HRC-S PI Region background filter file N0002. See the CalDB 4.9.4 Release Notes for details.