Pipeline overview

Introduction

This brief overview of the AperCal pipeline is based on the AperCal specification document (APERCal.pdf) in combination with the pipeline itself. The goal is to give a generic (but somewhat specific) insight into the various modules within AperCal and what they are doing. More specific/detailed documentation to come elsewhere.

1. Prepare (prepare.py)

Goal: Download data from ALTA and sort into folders.

2. Preflag (preflag.py)

Goal: Apply known flags and conduct automatic flagging.

3. Crosscal (ccal.py)

Goal: Calibrate the data using calibrator observation.

4. Selfcal (scal.py)

Goal: Self-calibrate the visibilities.

5. Continuum (continuum.py)

Goal: Deconvolve and clean the data to produce continuum images.

6. Line (line_parallel.py)

Goal: Produce a continuum-subtracted line emission cube.

7. Polarisation (polarisation.py)

Goal: Generate Stokes Q,U,V continuum images.

8. Mosaic (mosaic.py)

Goal: Mosaic data from different beams into one large field.

9. Transfer (transfer.py)

Goal: Prepare and transfer final data products to ALTA.

10. Convert (convert.py)

Goal: Convert between CASA/Miriad/other formats.