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The AAT/PPI is currently tracking all 3 OUS levels in our metadata for reference. As of version 3.6, it also provides the ability to restore calibrated measurement sets for an MOUS, provided that the data was calibrated entirely by the CASA pipeline.
Representation in the AAT/PPI:
Due to both ALMA and the EVLA using the Science Data Model format, it was relatively easy to incorporate ALMA execution blocks into the AAT/PPI system. In order to handle the OUS information, however, new table was added:
In the alma_ouses table, the SOUS/GOUS/MOUS (with those being the types defined in alma_ous_types) structure is recorded, with the SOUS maintaining a connection to the project, and the sub-OUSes linking to their parent. In addition, the alma_ous_id column was added to the execution_blocks table, providing a link from that level to the larger structure.