When the pilot data was originally produced, selavy would produce positive flux values for both the positive and negative source catalogues. At some point that changed, and selavy now produces negative flux values for the negative source catalogues.
To ensure that the correct flux density values are supplied to users, vasttools.utils.read_selavy should force all values to be positive.
Ty to @Andywang201605 for pointing this out and @joshoewahp for helping debug it.
When the pilot data was originally produced, selavy would produce positive flux values for both the positive and negative source catalogues. At some point that changed, and selavy now produces negative flux values for the negative source catalogues.
To ensure that the correct flux density values are supplied to users,
vasttools.utils.read_selavyshould force all values to be positive.Ty to @Andywang201605 for pointing this out and @joshoewahp for helping debug it.