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ChaSeR
ChaSeR, the CDA Search and
Retrieval tool is implemented as
a platform-independent Java application. Download and installation is
made easy and the application will notify users when updates are
available. The only caveat concerns older window managers such as
twm and tvtwm which are not fully X11-compliant and not
supported anymore.
ChaSeR allows users to browse the observation catalog with a
variety of search criteria, to display preview images, and to stage for
download any combination of public data products. In addition, it
allows authorized download of proprietary data products. In due
course it will replace the current procedure for proprietary data
distribution via the ftp site.
WebChaSeR
is a web-based version that allows similar searching
capabilties and in addition access to a various pieces of information,
such as images and bibliographic links. Data retrieval, however, is
restricted to primary and/or secondary data products.
Chandra Data Archive Status
Download statistics may be accessed here.
Proprietary data are distributed through WebChaSeR and on physical media.
Data products generated by Automated Processing first have to go
through Verification and Validation.
Principal Investigators will then be notified of the availability of
their data; at the same time a copy is made on
physical medium that is mailed to the PI.
Products generated by Custom Processing also go through V&V but are
only distributed through the ftp site.
In both cases the tar file contains a
Standard Data Distribution.
The non-proprietary data products in the Archive are open for public perusal.
In addition to calibration observations, certain non-CAL observations
are publicly available, either
because the PI waived proprietary rights or because the proprietary
period has expired. A listing may be found
here. The data may be obtained through
WebChaSeR.
The Chandra Caldb
is available for download from the CDA ftp site
(release notes).
CXCDS Automated Processing Status
The following webpages may be browsed for status information:
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For checking on the status of individual or classes of observation,
go to the CXCDS
Status Tool. This provides the most complete information.
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For checking on processing and data issues, see the
Issue Tables.
Other locations that contain some status information, though possibly
less up-to-date:
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ChaSeR
- Once an observation is scheduled, its status changes to
Scheduled.
- Once the V&V has approved distribution and products have been
ingested into the archive, its
status will change to Observed or Partially Observed.
- The status changes to Archived when the data are
publicly released.
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Data Caveats
See the Caveats page.
This page is maintained by the Chandra Data Archive Operations
group
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