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The HEASARC Calibration Database

Caldb manager: Dr. M. F. Corcoran

The HEASARC's calibration database (CALDB) system stores and indexes datasets associated with the calibration of high energy astronomical instrumentation. The system can be accessed by users and software alike to determine which calibration datasets are available, and which should be used for data reduction and analysis. (Read more...)

User Information

Supported Missions: Missions and Instruments which use the HEASARC CALDB
Find out who's using the CALDB
Remote Access to the HEASARC CALDB
The easiest way to access calibration data from the HEASARC
CALDB Documentation Library
CALDB file format definitions, user guides and more. For quick reference, a table listing the CALDB Header Keywords, with brief definitions, is available.
Cross-Calibration Information
This page contains documents regarding efforts at cross-calibration of X-ray and Gamma-ray instruments.
CALDB Software
Find out what HEASOFT software interacts with the CALDB.
Installing, Managing or Creating your own CALDB
Download the HEASARC CALDB and update it, or make your own CALDB
CALDB Personnel
Who's who at the CALDB (and who was who)
Need Help?
Take a look at the HEASARC Frequently Asked Questions, or use the Feedback page to ask a question.
CALDB Mirror
A mirror of the HEASARC CALDB is available at ftp://cda.cfa.harvard.edu/pub/arcftp/heasarc/caldb/
Latest News

  • NuSTAR Caldb Update (29 Apr 2025)
    The NuSTAR FPM caldb was updated to version 20250428. This release includes a new clock correction file, v204 using a new temperature model. Please see the release notes for more details.
  • NuSTAR Caldb Update (16 Apr 2025)
    The NuSTAR FPM caldb was updated to version 20250415. This release includes a new clock correction file, v203 using a new temperature model. Please see the release notes for more details.
  • NuSTAR Caldb Update (07 Apr 2025)
    The NuSTAR FPM caldb was updated to version 20250331. This release includes a new clock correction file, v202 using a new temperature model. Please see the release notes for more details.
  • BurstCube Calibration Database Released (27 Mar 2025)
    The first BurstCube Calibration Database (version 20250226) has been released at the HEASARC. As part of this release, the CALDB caldb.config file has also been updated to include the BurstCube release, and the caldb setup tar file has been updated with the new caldb.config file.

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    Page author: Michael F. Corcoran
    Last updated: Monday, 21-Apr-2025 17:48:35 EDT.