Data Processing of the Stratospheric Terahertz Observatory-2 [CII] Survey

The second flight of the Stratospheric Terahertz Observatory (STO-2) was a balloon mission to survey parts of the Galactic Plane at [CII] transition at 1.9 THz. STO-2 surveyed approximately 2.5 deg2 of the Galactic Plane at a spatial resolution of 1'. The STO-2 data suffer significant system drifts that are only partially addressed by the observing cadence. A slightly altered calibration scheme is presented to address these drifts. We show how it was possible to extract calibrated data from STO-2 scans and, based on the work presented here, make recommendations for the future GUSTO mission.