datadescriptionTab.html

DATA_DESCRIPTION Spectro-polarization description.


Name	Format	Units	Measure	Comments

Columns

Data
SPECTRAL_WINDOW_ID	Int			Spectral window identifier
POLARIZATION_ID	Int			Polarization identifier
ATMPHASE_CODE	Int			Code for atm phase correction

Flags
FLAG_ROW	Bool			The row flag

Notes: This table sets a referential constraint in the AEDF. It is indexed directly by DATA_DESCRIPTION_ID in the collection DATA_DESCRIPTION_ARRAY in the CONFIG_DESCRIPTION table.

SPECTRAL_WINDOW_ID: Spectral window identifier (>0): direct index into the DATA_DESCRIPTION sub-table.
POLARIZATION_ID: Polarization identifier (>0): direct index into the POLARIZATION sub-table.
ATMPHASE_CODE: Atmospheric phase correction code: 0 for un-corrected, 1 for corrected, 2 for both un-corrected and corrected. This gives the size of the “APC” axis in the data cell; it is given by N_apc=1 for ATMPHASE_CODE<2 else N_apc=2. DATA_DESCRIPTION_ID is indexed in the DATA_DESCRIPTION_ARRAY collection of the CONFIG_DESCRIPTION table.
FLAG_ROW: True if the row does not contain valid data; does not imply flagging in the MAIN table.