Chandra Announcement: CalDB version 4.11.5 released

[Tara Gokas]

CXC Announces the Release of Chandra CalDB version 4.11.5

This upgrade includes the following items:

• HRC-S QE file set version N0017 (4 files)
  
• One additional file for the new HV setting effective 2024-09-20T12:10
• HRC-S QE Uniformity data sets version N0020 (36 files) 
• Replaces the N0019 file set.
• Includes two additional new files effective 2024-08-26T00:00, 2024-09-25T12:10.
• PCAD ACA-primary DARK_CURR (dark current) file periodic additions #8.
• Does not affect CIAO users.

For details, please see the CalDB 4.11.5 Release Notes located at:
https://cxc.cfa.harvard.edu/caldb/downloads/Release_notes/CALDB_v4.11.5.html

NOTE: CalDB 4.11.5 is only compatible with CIAO 4.16.0 and later versions; CIAO 4.15.x and earlier versions will generate an error in and termination of acis_process_events due to the new CTI file formats.

See also "How CalDB 4.11.5 Affects Your Analysis" at:
https://cxc.cfa.harvard.edu/ciao/releasenotes/ciao_4.16_release.html#HowCALDB4.11.5AffectsYourAnalysis

To download the CalDB 4.11.5 upgrade see the CIAO download page below for instructions:

https://cxc.cfa.harvard.edu/ciao/download/index.html
wherein users may select either the Conda installation option or the ciao-install option.

Manual download and installation instructions are also available at: http://cxc.harvard.edu/caldb/downloads/

Users who do not wish to download the full CalDB, but would rather access it via the web for their specific observations only, may use the CIAO contributed script download_obsid_caldb. Note that the web-accessible CalDB may take a day or two to be upgraded to this latest CalDB release.

As always, please send questions and requests for enhancements to the CXC HelpDesk (http://cxc.harvard.edu/helpdesk/).