Coverage for python/lsst/validate/drp/calcsrd/pf1.py : 45%

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# LSST Data Management System # Copyright 2016 AURA/LSST. # # This product includes software developed by the # LSST Project (http://www.lsst.org/). # # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the LSST License Statement and # the GNU General Public License along with this program. If not, # see <https://www.lsstcorp.org/LegalNotices/>.
"""Measurement of PF1: fraction of samples between median RMS (PA1) and PA2 specification.
Parameters ---------- metric : `lsst.verify.Metric` A PF1 `~lsst.verify.Metric` instance. pa1 : `lsst.verify.Measurement` A PA1 measurement instance. pa2_spec : `lsst.verify.Spec` An `lsst.verify.Spec` that holds the threshold at which to measure PF1
Returns ------- measurement : `lsst.verify.Measurement` Measurement of PF1 and associated metadata.
Notes ----- The LSST Science Requirements Document (LPM-17) is commonly referred to as the SRD. The SRD puts a limit that no more than PF1 % of difference will vary by more than PA2 millimag. The design, minimum, and stretch goals are PF1 = (10, 20, 5) % at PA2 = (15, 15, 10) millimag following LPM-17 as of 2011-07-06, available at http://ls.st/LPM-17. """
datums = {} datums['pa2_spec'] = Datum(quantity=pa2_spec.threshold, description="Threshold applied to PA2") # Use first random sample from original PA1 measurement magDiff = pa1.extras['magDiff'].quantity magDiffs = magDiff[0, :]
quantity = 100 * np.mean(np.abs(magDiffs) > pa2_spec.threshold) * u.Unit('percent') return Measurement(metric, quantity, extras=datums) |