Description of datasets stored in HDF5 map format:

freq_centers           	 Frequency channel bin centers (64) for each sideband (4) in units GHz
freq_edges               Frequency channel bin edges (65) for each sideband (4) in units GHz
map                      Map dataset in units Kelvin. Dimensions; (sidebands, channels, Dec, RA)
mean_az                  Mean azimuth in degrees
mean_el                  Mean elevation in degrees
n_ra                     Number of bins in Right Ascension (RA) 
n_dec                    Number of bins in Declination (Dec)
nhit                     Hit map dataset. Dimensions; (sidebands, channels, Dec, RA)
nside                    HEALPIX Nside parameter corresponding to map resolution
patch_center             (RA, Dec) of field center in degrees
rms                      Noise map dataset in units Kelvin. Dimensions; (sidebands, channels, Dec, RA)
ra_centers               RA bin centers in degrees
ra_edges                 RA bin edges in degrees
dec_centers              Dec bin centers in degrees
dec_edges                Dec bin edges in degrees