Eazy-pype requires a working installation of the EAzY template fitting photometric redshift code in addition to the Python package requirements outlined in requirements.txt. The code is based around a main routine, eazy-pype.py, which then calls functions from the other python modules or directly calls them.
After setting the relevant parameters in the params.py file (or similar), the code is run following:
python eazy-pype.py -p params.py
where params.py(or similar name) is the specific parameter file for a given field (see below). In principle, depending on the options selected the above command can consecutively run through all stages of the procedure. However, in practice this is typically run in stages with checks at critical stages. In the sections below we outline the typical procedure taken.
eazypath = '... path .../eazy-photoz/src/eazy'
working_folder = 'HELP/EGS'
photometry_catalog = 'master_catalogue_egs_20180501_processed.fits.mod'
photometry_format = 'fits'
filter_file = 'egs_filters.res'
translate_file = 'egs.translate'
zspec_col = 'z_spec'
mag_col = '_mag'
magerr_col = '_magerr'
flux_col = 'flux'
fluxerr_col = 'fluxerr'
do_zp = False
do_zp_tests = False
do_subcats = False
do_full = False
do_stellar = False
do_hb = True
do_merge = True
do_zp:do_zp_tests:do_subcats:do_full:do_stellar:do_hb:do_merge:
Ncrossval = 1
test_fraction = 0.2
process_outliers = True
correct_extinction = True
# Templates: Any combination of 'eazy', 'cosmos', 'atlas'
templates = ['eazy', 'atlas', 'cosmos']
fitting_mode = ['a', '1', '1']
defaults = ['defaults/zphot.eazy',
'defaults/zphot.atlas',
'defaults/zphot.cosmos']
stellar_params = 'defaults/zphot.pickles'
additional_errors = [0.0, 0.0, 0.0]
template_error_norm = [1., 1., 1.]
template_error_file = ''
lambda_fit_max = [5., 30., 30.]
include_prior = True
include_prior_gal = True
include_prior_agn = True
fbad_prior = 'mag' # One of: 'flat', 'vol' or 'mag'
prior_parameter_path = 'bootes_I_prior_coeff.npz'
prior_fname = 'r_any_mag'
prior_colname = 'r_any_mag'
alpha_colname = 'r_any_mag'
gpz = True
ir_gpz_path = None
xray_gpz_path = None
opt_gpz_path = None
gal_gpz_paths = ['/data2/ken/HELP/EGS/gpz/megacam_ugrizweight_save.pkl',
'/data2/ken/HELP/EGS/gpz/suprime_grizy_weight_save.pkl']
block_size = 1e4
ncpus = 4
If either process_outliers = True or correct_extinction = True, during the initial loading of the input catalog,
do_zp = True