Reduce an ACSIS science observation, without
baselining REDUCE_SCIENCE_CONTINUUM_SUMMIT
This recipe is suitable for ACSIS using either the RxA3i or HARP or DAS backends.
A spatial/spectral cube whose filename is of the form gaYYYYMMDD_N, where YYYYMMDD is the UT date, and N is the group number. This is the coadded group file.