Contents of Metadata file

Below shows the contents of the metadata and brief description about them:

• interface: Giving the schema. Currently there is no schema for this (just a placeholder). It will be added to the Telescope Model.

• execution_block: Identifies the observation

• context: This contains free-form data provided by OET. The data is meant to be passed verbatim through from OET/TMC as part of AssignResources (SDP) or Configure (other sub-systems). Currently this is just a placeholder.

• config: This is the configuration used for executing the processing script

• files: This contains a list of data products (typically MS or HDF files) which have been generated.

  • crc: A cyclic redundancy check (CRC) generated from the contents of the file and used to detect errors in the data

  • description: Useful details about the file

  • path: Path where the data product file is located

  • size: Size of the file (in KB)

  • status: Indicate current file status

    • working: Processes still running, files might be missing or incomplete

    • done: Processes finished, files should be complete

    • failure: Not finished successfully, files might be incomplete or corrupt

• obscore: This contains attributes as specified by the IVOA recommendation for Observation Data Models. It defines core components that are necessary to perform data discovery when querying for astronomical observations. Details of the attributes can be found at IVOA ObsCore.

• sdm: Science Data Model

  • lsm: Array of Local Sky Model (LSM) entries, each containing:

    • columns: List of column names in the LSM data file

    • file_path: Path to the LSM data file

    • header: Catalogue and query parameter metadata, including commonly used fields such as:

      • CATALOGUE_METADATA_AUTHOR: Author of the catalogue

      • CATALOGUE_METADATA_CATALOGUE_NAME: Name of the sky model catalogue

      • CATALOGUE_METADATA_DESCRIPTION: Description of the catalogue

      • CATALOGUE_METADATA_VERSION: Version of the catalogue

      • CATALOGUE_METADATA_UPLOADED_AT: Timestamp when catalogue was uploaded

      • NUMBER_OF_COMPONENTS: Total number of sky components in the LSM

      • QUERY_RA_DEG: Right ascension used for the query (degrees)

      • QUERY_DEC_DEG: Declination used for the query (degrees)

      • QUERY_FOV_DEG: Field of view for the query (degrees)

      • QUERY_SUB_PATH: Sub-path for the query output

      • Additional parameters that were used to query the Global Sky Model database for this LSM.

More details can be found in ADR-55

Note - If the metadata filename needs to be updated, you can do that by publishing it on METADATA_FILENAME environment variable.