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# 

# Developed for the LSST Data Management System. 

# This product includes software developed by the LSST Project 

# (http://www.lsst.org). 

# See the COPYRIGHT file at the top-level directory of this distribution 

# for details of code ownership. 

# 

# 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 GNU General Public License 

# along with this program. If not, see <http://www.gnu.org/licenses/>. 

# 

 

"""Classes for taking science pipeline outputs and creating data products for 

use in ap_association and the prompt-products database (PPDB). 

""" 

 

__all__ = ["MapApDataConfig", "MapApDataTask", 

"MapDiaSourceConfig", "MapDiaSourceTask"] 

 

import lsst.afw.table as afwTable 

from lsst.daf.base import DateTime 

import lsst.pipe.base as pipeBase 

import lsst.pex.config as pexConfig 

from lsst.pex.exceptions import RuntimeError 

import lsst.afw.image as afwImage 

from .afwUtils import make_minimal_dia_source_schema 

 

 

class MapApDataConfig(pexConfig.Config): 

"""Configuration for the generic MapApDataTask class. 

""" 

copyColumns = pexConfig.DictField( 

keytype=str, 

itemtype=str, 

doc="Mapping of input SciencePipelines columns to output DPDD " 

"columns.", 

default={"id": "id", 

"parent": "parent", 

"coord_ra": "coord_ra", 

"coord_dec": "coord_dec"} 

) 

 

 

class MapApDataTask(pipeBase.Task): 

"""Generic mapper class for copying values from a science pipelines catalog 

into a product for use in ap_association or the PPDB. 

""" 

ConfigClass = MapApDataConfig 

_DefaultName = "mapApDataTask" 

 

def __init__(self, inputSchema, outputSchema, **kwargs): 

pipeBase.Task.__init__(self, **kwargs) 

self.inputSchema = inputSchema 

self.outputSchema = outputSchema 

 

self.mapper = afwTable.SchemaMapper(inputSchema, outputSchema) 

 

for inputName, outputName in self.config.copyColumns.items(): 

self.mapper.addMapping( 

self.inputSchema.find(inputName).key, 

outputName, 

True) 

 

def run(self, inputCatalog, exposure=None): 

"""Copy data from the inputCatalog into an output catalog with 

requested columns. 

 

Parameters 

---------- 

inputCatalog: `lsst.afw.table.SourceCatalog` 

Input catalog with data to be copied into new output catalog. 

 

Returns 

------- 

outputCatalog: `lsst.afw.table.SourceCatalog` 

Output catalog with data copied from input and new column names. 

""" 

outputCatalog = afwTable.SourceCatalog(self.outputSchema) 

outputCatalog.extend(inputCatalog, self.mapper) 

 

if not outputCatalog.isContiguous(): 

raise RuntimeError("Output catalogs must be contiguous.") 

 

return outputCatalog 

 

 

class MapDiaSourceConfig(pexConfig.Config): 

"""Config for the DiaSourceMapperTask 

""" 

copyColumns = pexConfig.DictField( 

keytype=str, 

itemtype=str, 

doc="Mapping of input SciencePipelines columns to output DPDD " 

"columns.", 

default={"id": "id", 

"parent": "parent", 

"coord_ra": "coord_ra", 

"coord_dec": "coord_dec", 

"slot_ApFlux_instFlux": "apFlux", 

"slot_ApFlux_instFluxErr": "apFluxErr", 

"slot_PsfFlux_instFlux": "psFlux", 

"slot_PsfFlux_instFluxErr": "psFluxErr"} 

) 

calibrateColumns = pexConfig.ListField( 

dtype=str, 

doc="Flux columns in the input catalog to calibrate.", 

default=["slot_ApFlux", "slot_PsfFlux", "slot_dipMeanFlux", 

"slot_dipFluxDiff", "slot_totFlux"] 

) 

 

 

class MapDiaSourceTask(MapApDataTask): 

"""Task specific for copying columns from science pipelines catalogs, 

calibrating them, for use in ap_association and the PPDB. 

 

This task also copies information from the exposure such as the ExpsoureId 

and the exposure date as specified in the DPDD. 

""" 

 

ConfigClass = MapDiaSourceConfig 

_DefaultName = "mapDiaSourceTask" 

 

def __init__(self, inputSchema, **kwargs): 

MapApDataTask.__init__(self, 

inputSchema=inputSchema, 

outputSchema=make_minimal_dia_source_schema(), 

**kwargs) 

 

def run(self, inputCatalog, exposure): 

"""Copy data from the inputCatalog into an output catalog with 

requested columns. 

 

Parameters 

---------- 

inputCatalog: `lsst.afw.table.SourceCatalog` 

Input catalog with data to be copied into new output catalog. 

exposure: `lsst.afw.image.Exposure` 

Exposure with containing the calib object relevant to this catalog. 

Returns 

------- 

outputCatalog: `lsst.afw.table.SourceCatalog` 

Output catalog with data copied from input and new column names. 

""" 

visit_info = exposure.getInfo().getVisitInfo() 

ccdVisitId = visit_info.getExposureId() 

midPointTaiMJD = visit_info.getDate().get(system=DateTime.MJD) 

 

flux0, flux0Err = exposure.getCalib().getFluxMag0() 

photoCalib = afwImage.PhotoCalib(1 / flux0, flux0Err / flux0 ** 2) 

 

outputCatalog = afwTable.SourceCatalog(self.outputSchema) 

outputCatalog.reserve(len(inputCatalog)) 

 

for inputRecord in inputCatalog: 

outputRecord = outputCatalog.addNew() 

outputRecord.assign(inputRecord, self.mapper) 

self.calibrateFluxes(inputRecord, outputRecord, photoCalib) 

 

outputRecord.set("ccdVisitId", ccdVisitId) 

outputRecord.set("midPointTai", midPointTaiMJD) 

 

if not outputCatalog.isContiguous(): 

raise RuntimeError("Output catalogs must be contiguous.") 

 

return outputCatalog 

 

def calibrateFluxes(self, inputRecord, outputRecord, photoCalib): 

"""Copy flux values into an output record and calibrate them. 

 

Parameters 

---------- 

inputRecord: `lsst.afw.table.SourceRecord` 

Record to copy flux values from. 

outputRecord: `lsst.afw.table.SourceRecord` 

Record to copy and calibrate values into. 

photoCalib: `lsst.afw.image.PhotoCalib` 

Calibration object from the difference exposure. 

""" 

for col_name in self.config.calibrateColumns: 

meas = photoCalib.instFluxToMaggies(inputRecord, col_name) 

outputRecord.set(self.config.copyColumns[col_name + "_instFlux"], 

meas.value) 

outputRecord.set( 

self.config.copyColumns[col_name + "_instFluxErr"], 

meas.err)