ComputeExposureSummaryStatsTask¶

Python API summary¶

from lsst.pipe.tasks.computeExposureSummaryStats import ComputeExposureSummaryStatsTask

classComputeExposureSummaryStatsTask(**kwargs): Task to compute exposure summary statistics...

attributeconfig: Access configuration fields and retargetable subtasks.

methodrun(exposure, sources, background): Measure exposure statistics from the exposure, sources, and background...

Retargetable subtasks¶

starSelector¶

Default: lsst.meas.algorithms.sourceSelector.ScienceSourceSelectorTask
Field type: ConfigurableField

Selection of sources to compute PSF star statistics.

Configuration fields¶

badMaskPlanes¶

Default: ('NO_DATA', 'SUSPECT')
Field type: str ListField

Mask planes that, if set, the associated pixel should not be included sky noise calculation.

clipIter¶

Default: 2
Field type: int Field

Number of iterations of outlier rejection for sky noise.

fiducialPsfSigma¶

Default: {'u': 1.0, 'g': 1.0, 'r': 1.0, 'i': 1.0, 'z': 1.0, 'y': 1.0}
Field type: DictField
Key type: str
Value type: float

Fiducial PSF sigma (pixels) assumed when calculating effective exposure time. Keyed by band.

fiducialSkyBackground¶

Default: {'u': 1.0, 'g': 1.0, 'r': 1.0, 'i': 1.0, 'z': 1.0, 'y': 1.0}
Field type: DictField
Key type: str
Value type: float

Fiducial sky background level (ADU/s) assumed when calculating effective exposure time. Keyed by band.

fiducialZeroPoint¶

Default: {'u': 25.0, 'g': 25.0, 'r': 25.0, 'i': 25.0, 'z': 25.0, 'y': 25.0}
Field type: DictField
Key type: str
Value type: float

Fiducial zero point assumed when calculating effective exposure time. Keyed by band.

magLimSnr¶

Default: 5.0
Field type: float Field

Signal-to-noise ratio for computing the magnitude limit depth.

maxEffectiveTransparency¶

Default: inf
Field type: float Field

Maximum value allowed for effective transparency scale factor (often inf or 1.0).

minPsfApRadiusPix¶

Default: 2.0
Field type: float Field

Minimum radius in pixels of the aperture within which to measure the flux of the PSF model for the psfApFluxDelta metric calculation (the radius is computed as max(minPsfApRadius, 3*psfSigma)).

psfApCorrFieldName¶

Default: 'base_PsfFlux_instFlux'
Field type: str Field

Name of the flux column associated with the aperture correction of the PSF model to use for the psfApCorrSigmaScaledDelta metric calculation.

psfBadMaskPlanes¶

Default: ('BAD', 'CR', 'EDGE', 'INTRP', 'NO_DATA', 'SAT', 'SUSPECT')
Field type: str ListField

Mask planes that, if set, the associated pixel should not be included in the PSF model robutsness metric calculations (namely, maxDistToNearestPsf and psfTraceRadiusDelta).

psfGridSampling¶

Default: 96
Field type: int Field

Sampling rate in pixels in each dimension for PSF model robustness metric caclulations grid (the tradeoff is between adequate sampling versus speed).

psfSampling¶

Default: 8
Field type: int Field

Sampling rate in pixels in each dimension for the maxDistToNearestPsf metric caclulation grid (the tradeoff is between adequate sampling versus speed).

psfShape¶

Default: 'slot_PsfShape'
Field type: str Field

Base name of columns to use for the PSF shape in the PSF statistics computation.

sigmaClip¶

Default: 3.0
Field type: float Field

Sigma for outlier rejection for sky noise.

starSelection¶

Default: 'calib_psf_used'
Field type: str Field

Field to select full list of sources used for PSF modeling.

starShape¶

Default: 'slot_Shape'
Field type: str Field

Base name of columns to use for the source shape in the PSF statistics computation.

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