There are two coordination systems in MintPy: radar coordinate and geo coordinate. Geo coordinate is defined in WGS84 coordination for horizontal direction, and determined by the following ROI_PAC attributes in latitude and longitude. The following shows examples from KujuAlosAT422F650/mintpy/geo/geo_velocity.h5:

X_FIRST    131.02409876
Y_FIRST    33.63756779
X_STEP     0.00033333
Y_STEP     -0.00033333
X_UNIT     degrees
Y_UNIT     degrees

X/Y_FIRST are the longitude/latitude value of the first (upper left corner) pixel’s upper left corner, as shown below: