These flags are set for "point" sources by omdetect when the photometry is performed. The flags are stored in an 8-bit integer variable and the settings are:
|0||Point source has one or more sources within a radius of 6-12 unbinned pixels||1|
|1||Point source has one or more sources within a radius of 3-6 unbinned pixels||2|
A source could have a confusion flag value of 3, indicating that both bits 0 and 1 are set.