"""
desitarget.cmx.cmx_targetmask
=============================
This looks more like a script than an actual module.
"""
from desiutil.bitmask import BitMask
from desitarget.targetmask import load_mask_bits
_bitdefs = load_mask_bits("cmx")
try:
cmx_mask = BitMask('cmx_mask', _bitdefs)
cmx_obsmask = BitMask('cmx_obsmask', _bitdefs)
except TypeError:
cmx_mask = object()
cmx_obsmask = object()
print('Assigned targets: {}'.format(len(_assigned)))
## Retain only the science targets; Dropping standards etc.
_assigned = _assigned[_assigned['FA_TYPE'].quantity == 1]
print('Assigned science: {}'.format(len(_assigned)))
## Load one tile, currently.
Tile = 74057
sv_mtl = Table(fits.open(scratch + '/BGS/SV-ASSIGN/mtls/svmtl_{:06d}.fits'.format(Tile))[1].data)
## Limit to only BGS.
sv_mtl = sv_mtl[sv_mtl['SV1_BGS_TARGET'].quantity.value > 0]
print('Total targets in Tile {}: {}.'.format(Tile, len(sv_mtl)))
##
_bitdefs = load_mask_bits("sv1")
bgs_mask = BitMask('sv1_bgs_mask', _bitdefs)
types = bgs_mask.names()
bits = [bgs_mask.bitnum(x) for x in types]
## Those that were assigned in this tile.
assigned = join(_assigned, sv_mtl, keys=['BRICKID', 'BRICK_OBJID'], join_type='inner')
## SV Target class.
splits = {}
title = ''
##
for _type in ['BGS_FAINT', 'BGS_BRIGHT', 'BGS_FAINT_EXT', 'BGS_LOWQ', 'BGS_FIBMAG']:
sample = _type.split('_')