CALAMITY -- A Radio Interferometer Calibration Tool that Requires No Redundancy and Minimal Prior Knowledge on Foregrounds and Beams
CALibration AMITY (CALAMITY) is a frequency regulated self-cal strategy that simultaneously fits for calibration solutions with foregrounds that are described by a well understood / behaved set of basis vectors. Examples of basis sets that do not incorporate inter-baseline correlations are DPSS vectors and DFT vectors.
CALAMITY: increasing the amity between fluctuations in the 21cm field and radio interferometry.
You can install calamity with pip by running pip install git+https://github.com/aewallwi/calamity.git in your terminal.
See this tutorial: https://github.com/aewallwi/calamity/blob/main/examples/Calamity_Tutorial.ipynb
A detailed description of this method can be found at https://ui.adsabs.harvard.edu/abs/2021arXiv211011994E/abstract.