pat / pac

What pat does

pat matches an observed profile against a template profile and emits TOA-related text output.

Illustrative command:

pat -A PGS -s template.ar -f tempo2 observation.ar

Inside PSRUI, that corresponds to:

• template selection
• algorithm selection
• tempo2 or parkes output format
• raw pat output
• a visual residual preview

What pac does

pac handles polarization-calibration workflows.

PSRUI currently exposes only the "preview with existing assets" layer, not the full calibration-database builder workflow.

Typical PSRUI workflow

archive preview -> choose template / calibration asset -> run pat or pac preview -> inspect output

PSRUI today: pat is already exposed in the GUI. pac is currently limited to preview commands and logs rather than raw-calibrator database construction.

Common pitfalls

• poor template choice produces poor TOA results
• calibration search paths and concrete asset paths are easy to confuse
• emitting tempo2-format TOAs is not the same as completing a full tempo2 residual-analysis workflow

Further reading

• Pulsar Data Analysis with PSRCHIVE
• tempo2