Fast interferometric data from the Very Large Array for Fast Radio Burst FRB 190520

Data products to support reproduction of the interferometric localization of Fast Radio Burst 190520.

The principle data products are tar files of fast-sampled interferometric data from the Very Large Array (download separately to avoid dataverse file size limit). Each observation segment includes a few seconds of visibilities centered on a radio burst from FRB 190520. Data is in science data model (SDM) format, which consists of a directory with metadata in XML files and binary data in the ASDMBinary subdirectory. Binary data were recorded with an integration time of 10 ms and dual-circular polarizations. Each file is identified by a unique name of the observation, plus the observation start time in MJD. Each visibility data set is associated with one of the calibration files with the same MJD (telcal format; ending in ".GN") that can be parsed to apply gain calibration.

The Python package rtpipe (https://github.com/realfastvla/rfpipe) can perform all calibration and analysis of these data. This library is supported by sdmpy (https://github.com/demorest/sdmpy), a Python library to read SDM files. See also http://realfast.io for information on the project behind the data acquisition system and analysis software.