xlens.process_pipe.measure_multiband

Classes

`MeasureMergedCoaddSourcesConnections`
`MeasureMergedCoaddSourcesConfig`	Configuration parameters for the MeasureMergedCoaddSourcesTask
`MeasureMergedCoaddSourcesTask`	Deblend sources from main catalog in each coadd seperately and measure.

Module Contents

class MeasureMergedCoaddSourcesConnections(*, config=None)[source]

Bases: lsst.pipe.base.PipelineTaskConnections

inputSchema[source]

outputSchema[source]

refCat[source]

exposure[source]

skyMap[source]

scarletCatalog[source]

scarletModels[source]

outputSources[source]

class MeasureMergedCoaddSourcesConfig[source]

Bases: lsst.pipe.base.PipelineTaskConfig

Configuration parameters for the MeasureMergedCoaddSourcesTask

doAddFootprints[source]

doConserveFlux[source]

doStripFootprints[source]

measurement[source]

setPrimaryFlags[source]

doMatchSources[source]

match[source]

doWriteMatchesDenormalized[source]

psfCache[source]

checkUnitsParseStrict[source]

catalogCalculation[source]

idGenerator[source]

setDefaults()[source]

validate()[source]

class MeasureMergedCoaddSourcesTask(schema=None, peakSchema=None, refObjLoader=None, initInputs=None, **kwargs)[source]

Bases: lsst.pipe.base.PipelineTask

Deblend sources from main catalog in each coadd seperately and measure.

Use peaks and footprints from a master catalog to perform deblending and measurement in each coadd.

Given a master input catalog of sources (peaks and footprints) or deblender outputs(including a HeavyFootprint in each band), measure each source on the coadd. Repeating this procedure with the same master catalog across multiple coadds will generate a consistent set of child sources.

The deblender retains all peaks and deblends any missing peaks (dropouts in that band) as PSFs. Source properties are measured and the @c is-primary flag (indicating sources with no children) is set. Visit flags are propagated to the coadd sources.

Optionally, we can match the coadd sources to an external reference catalog.

After MeasureMergedCoaddSourcesTask has been run on multiple coadds, we have a set of per-band catalogs. The next stage in the multi-band processing procedure will merge these measurements into a suitable catalog for driving forced photometry.

Parameters:

schema (``lsst.afw.table.Schema`, optional) – The schema of the merged detection catalog used as input to this one.
peakSchema (``lsst.afw.table.Schema`, optional) – The schema of the PeakRecords in the Footprints in the merged detection catalog.
refObjLoader (lsst.meas.algorithms.ReferenceObjectLoader, optional) – An instance of ReferenceObjectLoader that supplies an external reference catalog. May be None if the loader can be constructed from the butler argument or all steps requiring a reference catalog are disabled.
initInputs (dict, optional) – Dictionary that can contain a key inputSchema containing the input schema. If present will override the value of schema.
**kwargs – Additional keyword arguments.

_DefaultName = 'measureCoaddSources'[source]

ConfigClass[source]

schemaMapper[source]

schema[source]

algMetadata[source]

outputSchema[source]

runQuantum(butlerQC, inputRefs, outputRefs)[source]

run(exposure, sources, skyInfo, exposureId, ccdInputs=None, sourceTableHandleDict=None, finalizedSourceTableHandleDict=None, **kwargs)[source]

Run measurement algorithms on the input exposure, and optionally populate the resulting catalog with extra information.

Parameters:

exposure (lsst.afw.exposure.Exposure) – The input exposure on which measurements are to be performed.
sources (lsst.afw.table.SourceCatalog) – A catalog built from the results of merged detections, or deblender outputs.
skyInfo (lsst.pipe.base.Struct) – A struct containing information about the position of the input exposure within a SkyMap, the SkyMap, its Wcs, and its bounding box.
exposureId (int or bytes) – Packed unique number or bytes unique to the input exposure.
ccdInputs (lsst.afw.table.ExposureCatalog, optional) – Catalog containing information on the individual visits which went into making the coadd.
sourceTableHandleDict (dict [int,) – lsst.daf.butler.DeferredDatasetHandle], optional Dict for sourceTable_visit handles (key is visit) for propagating flags. These tables are derived from the CalibrateTask sources, and contain astrometry and photometry flags, and optionally PSF flags.
finalizedSourceTableHandleDict (dict [int,) – lsst.daf.butler.DeferredDatasetHandle], optional Dict for finalized_src_table handles (key is visit) for propagating flags. These tables are derived from FinalizeCalibrationTask and contain PSF flags from the finalized PSF estimation.

Returns:

results – Results of running measurement task. Will contain the catalog in the sources attribute. Optionally will have results of matching to a reference catalog in the matchResults attribute, and denormalized matches in the denormMatches attribute.

Return type:

lsst.pipe.base.Struct