NenuCAL CD
nenucal is a calibration and data-management toolkit for NenuFAR radio
observations. It takes raw or pre-processed NenuFAR MeasurementSets and produces
calibrated visibilities ready for imaging or power-spectrum analysis. It was
developed for the Cosmic Dawn project but is not specific to it — it can be used
for any NenuFAR imaging observation.
At its core it provides three things, each installed as a command-line tool:
- a data management tool (
nenudata) to organise observations, spectral windows, and node layout, and to move data between processing stages; - a calibration pipeline (
calpipe), built on DP3 and driven by TOML configuration files; - a set of utilities for the supporting data products: gain solutions
(
soltool), sky models (modeltool), flagging (flagtool), MeasurementSets (mstool), and imaging (imgpipe).
Full documentation: https://nenucal-cd.readthedocs.io
Installation
$ pip install nenucal
Requires Python ≥ 3.10; the Python dependencies are installed automatically.
The source repository is named nenucal-cd, while the published Python
distribution and import package are both named nenucal.
Some functionality also relies on external tools that must be installed separately:
Usage
See the documentation for guides on the calibration pipeline, sky-model building, flagging, gain-solution handling, and data management.
nenucal is designed to be composed into full pipelines. For the Cosmic Dawn
project it was used to build two general, reusable pipelines:
- nenuprepipe — raw-data pre-processing into calibration-ready MeasurementSets;
- nenuflow — the end-to-end calibration pipeline.
Contact
Do not hesitate to file an issue or contact me if you encounter a problem with this package.
1 maintainer
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