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NCSA CARMA Data Archive

CARMA Data Reduction Pipeline

The CARMA Data Reduction Pipeline is intended to give CARMA users a "first look" at their data. The fundamental Pipeline products are calibrated u-v datasets and maps generated from those datasets. The Pipeline products are not intended for publication. Instead, the products provide users a way to quickly assess data quality and to determine whether critical problems occurred during the observations. The Pipeline's reduction procedure should be used as a guide for producing analysis-quality images.

The pipeline is currently running in two modes. The first is processing all CARMA data as they arrive in the archive. Typically the pipeline products will be available within a few hours of the data arriving in the archive. Delays can be caused by a backlog in the queue, multipoint mosaics, and datasets with many spectral line windows. The second mode has the pipeline running through all archived data, working back in time, array configuration by array configuration.

Currently the pipeline supports the following observing modes (in any combination):

  • Single pointing observations
  • Multi-point mosaics
  • Continuum observations
  • Spectral line observations
  • Hybrid mode observations (rarely used)
  • SZ observations
  • Observations at 1mm, 3mm, and 1cm
The following modes are under development:
  • PACS observations (will be ready before next PACS season starts)
  • Dual polarization observations (near future)
  • CARMA23 observations (near future)
  • Full stokes observations (awaiting development of reduction algorithms)
  • Maximum sensitivity observations

Current Status

There are two web pages set up to give the current status of the pipeline. The first page is associated with the first mode above and lists all tracks that have been processed in the past two days, the currently processing track, and the queue of tracks to be processed. The second page gives an overview of all data that have been run through the pipeline, project by project.

Forum

A forum for questions and discussion of the CARMA data reduction pipeline has been created here. Registration is not required but is recommended.

Documentation

A more complete documentation of the pipeline can be found here, in both pdf and web format.
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The CARMA Data Archive is\n a project of Radio Astronomy Imaging Team
at the National Center for Supercomputing Applications on the campus of the University of Illinois at Urbana-Champaign
Contact the Pipeline Administrator:pipeline@astro.illinois.edu