This package demonstrates processing a single CCD with the Rubin Observatory LSST Science Pipelines. It contains input files and astrometric reference catalogs needed to process the data from a single HSC detector. Its main purpose is to check that the pipeline infrastructure is working correctly.

To run the example, from the pipelines_check root directory do:

$ source $LSST_HOME/loadLSST.sh
$ setup -r .
$ ./bin/run_demo.sh

The script creates a new Butler data repository in the DATA_REPO subdirectory containing the raw and calibration data found in the input_data directory. It then processes the data using the pipetask command to execut the ProcessCcd pipeline. The outputs from processing are written to the demo_collection collection. To rerun the processing you can either delete the DATA_REPO subdirectory and run the script again, or else you can copy and run the pipetask command and change the output collection.

If you prefer, you can run the demo script by typing scons.

The package comes with raw data from detector 10 of visit 903342. This is an r-band observation

Also included are the required bias/dark/flat calibration frames and a reference catalog. The master calibrations have been lossy-compressed to save space and so are not expected to be identical to those found in the testdata_ci_hsc data package.

There should not be any need to update the data files themselves. If the Butler registry schema changes it will be necessary to update the exported registry files to keep them compatible with the new Butler. This is done by first completing a new run of the ci_hsc_gen3 package. With that package setup, the single-ccd subset is exported by running the script bin/rebuild_demo.sh.

The dark/bias/flat calibration files are not the same as those found in testdata_ci_hsc. They have been lossy-compressed with fpack -g2 but retaining the .fits extension. They should not be overwritten by the uncompressed versions that will be exported by the rebuild_demo.sh script. Doing so would significantly increase the size of the Git repository.

This script will export data to a staging directory. If there has been no change to the testdata_ci_hsc data or to the file templates used for Butler ingest, there should be no need to move the data across from staging. All that is required is to copy the export.yaml file into the input_data directory.

If the files moved then the existing files in input_data should be moved to the required locations.

If the calibration files really have changed then it will be necessary to recompress them before moving them into the new location in input_data.