Design

The following diagram summarises the main steps performed by the CLI tool:

Input Products

The CLI tool takes the following mandatory positional arguments:

• fits_image: A FITS image file output by WSClean.

• oskar_lsm: An OSKAR-compatible fixed-format ASCII LSM file that serves as the reference sky model for source matching.

Output Products

ska-sdp-continuum-imaging-qa produces the following output files:

• *_matched_catalogue.csv The catalogue of sources matched between the input image and the reference sky model.

• *_flux_density_ratios.npy The flux density ratios of the matched sources.

• *_positional_offsets.npy The positional offsets of the matched sources.

• *_qametrics.txt A text file containing the computed QA metrics.

• *_qa_summary.png A summary plot of the QA metrics.