| Parameters | Command-line | Input image | Source | Catalogue |
| OBS_ID | obsidstr |
header |
— | Column |
| SRC_NUM (single) | srcnum | — | (Column) | Column |
| SRC_NUM (multiple) | — | — | Column | Column |
): The command-line argument, if specified, has a priority over the header attribute.
The external catalogue is used to specify the source name and some IDs of each source. The matching between the sources in the source list or user-specified source and the one in the external catalogue is based on OBS_ID and SRC_NUM (see Table 2, where the information is derived from).
