lsst.obs.decam.decamCpIsr.DecamCpIsrTask Class Reference

Inheritance diagram for lsst.obs.decam.decamCpIsr.DecamCpIsrTask:

Public Member Functions
def	biasCorrection (self, exposure, biasExposure)
def	flatCorrection (self, exposure, flatExposure)

Static Public Attributes
	ConfigClass = DecamCpIsrConfig

Detailed Description

Perform ISR task using Community Pipeline Calibration Products MasterCal.

The CP MasterCal products have butler dataset types cpBias and cpFlat,
different from the LSST-generated calibration products (bias/flat).

Definition at line 65 of file decamCpIsr.py.

Member Function Documentation

biasCorrection()

def lsst.obs.decam.decamCpIsr.DecamCpIsrTask.biasCorrection	(		self,
			exposure,
			biasExposure
	)

Apply bias correction in place

DECam bias products have been trimmed and are smaller than
the raw exposure.  The size of edge trim is computed based
on the dimensions of the input data.  Only process the inner
part of the raw exposure, and mask the outer pixels as EDGE.

Parameters
----------
exposure : `lsst.afw.image.Exposure`
    Exposure to process.
biasExposure : `lsst.afw.image.Exposure`
    Bias exposure.

Definition at line 73 of file decamCpIsr.py.

    def biasCorrection(self, exposure, biasExposure):
        """Apply bias correction in place

        DECam bias products have been trimmed and are smaller than
        the raw exposure.  The size of edge trim is computed based
        on the dimensions of the input data.  Only process the inner
        part of the raw exposure, and mask the outer pixels as EDGE.

        Parameters
        ----------
        exposure : `lsst.afw.image.Exposure`
            Exposure to process.
        biasExposure : `lsst.afw.image.Exposure`
            Bias exposure.
        """
        nEdge = _computeEdgeSize(exposure, biasExposure)
        if nEdge > 0:
            rawMaskedImage = exposure.maskedImage[nEdge:-nEdge, nEdge:-nEdge, LOCAL]
        else:
            rawMaskedImage = exposure.getMaskedImage()
        biasCorrection(rawMaskedImage, biasExposure.getMaskedImage())
        # Mask the unprocessed edge pixels as EDGE
        SourceDetectionTask.setEdgeBits(
            exposure.getMaskedImage(),
            rawMaskedImage.getBBox(),
            exposure.getMaskedImage().getMask().getPlaneBitMask("EDGE")
        )

flatCorrection()

def lsst.obs.decam.decamCpIsr.DecamCpIsrTask.flatCorrection	(		self,
			exposure,
			flatExposure
	)

Apply flat correction in place.

DECam flat products have been trimmed and are smaller than
the raw exposure.  The size of edge trim is computed based
on the dimensions of the input data.  Only process the inner
part of the raw exposure, and mask the outer pixels as EDGE.

Parameters
----------
exposure : `lsst.afw.image.Exposure`
    Exposure to process.
flatExposure : `lsst.afw.image.Exposure`
    Flatfield exposure.

Definition at line 101 of file decamCpIsr.py.

    def flatCorrection(self, exposure, flatExposure):
        """Apply flat correction in place.

        DECam flat products have been trimmed and are smaller than
        the raw exposure.  The size of edge trim is computed based
        on the dimensions of the input data.  Only process the inner
        part of the raw exposure, and mask the outer pixels as EDGE.

        Parameters
        ----------
        exposure : `lsst.afw.image.Exposure`
            Exposure to process.
        flatExposure : `lsst.afw.image.Exposure`
            Flatfield exposure.
        """
        nEdge = _computeEdgeSize(exposure, flatExposure)
        if nEdge > 0:
            rawMaskedImage = exposure.maskedImage[nEdge:-nEdge, nEdge:-nEdge, LOCAL]
        else:
            rawMaskedImage = exposure.getMaskedImage()
        flatCorrection(
            rawMaskedImage,
            flatExposure.getMaskedImage(),
            self.config.flatScalingType,
            self.config.flatUserScale
        )
        # Mask the unprocessed edge pixels as EDGE
        SourceDetectionTask.setEdgeBits(
            exposure.getMaskedImage(),
            rawMaskedImage.getBBox(),
            exposure.getMaskedImage().getMask().getPlaneBitMask("EDGE")
        )

Member Data Documentation

ConfigClass

lsst.obs.decam.decamCpIsr.DecamCpIsrTask.ConfigClass = DecamCpIsrConfig

static

Definition at line 71 of file decamCpIsr.py.

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The documentation for this class was generated from the following file:

• /j/snowflake/release/lsstsw/stack/Linux64/obs_decam/18.1.0/python/lsst/obs/decam/decamCpIsr.py

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Generated on Thu Aug 8 2019 20:21:24 for LSSTApplications by   1.8.13