Rapthor: LOFAR DDE Pipeline

Rapthor is an experimental pipeline for correcting direction-dependent effects in LOFAR data. It uses DPPP and WSClean to derive and apply the corrections in facets or as smooth 2-D screens. It uses CWL for the pipeline language and Toil to run the pipelines.

Documentation

Extensive documentation can be found on Read the Docs.

Installation

To install rapthor, follow the instructions below.

Dependencies

Rapthor requires the following packages (beyond those installed automatically with rapthor):

• WSClean (version 2.9 or later; building with IDG and EveryBeam is required)
• DP3 (version v4.1 or later; building with Dysco and EveryBeam is required)
• LSMTool (version 1.4.2 or later)
• LoSoTo (version 2.0 or later)
• PyBDSF (version 1.9.2 or later)

Downloading and Installing

Get the latest developer version by cloning the git repository:

git clone https://git.astron.nl/RD/rapthor.git

Then install with:

cd rapthor
pip install .

Or, alternatively, in one go:

pip install git+https://git.astron.nl/RD/rapthor.git

Usage

The rapthor executable can be used from the command line with a parset that defines the parameters of the run. E.g.:

$ rapthor rapthor.parset

The parset defines the input and working directories, various options, etc. For details, please see the example parset in the examples directory.