CfhtIsrTaskConfig¶

class lsst.obs.cfht.cfhtIsrTask.CfhtIsrTaskConfig¶

Bases: lsst.ip.isr.isrTask.IsrTaskConfig

Attributes Summary

`assembleCcd`	CCD assembly task (`ConfigurableInstance`, default `<class 'lsst.ip.isr.assembleCcdTask.AssembleCcdConfig'>`)
`biasDataProductName`	Name of the bias data product (`str`, default `'bias'`)
`brighterFatterApplyGain`	Should the gain be applied when applying the brighter fatter correction? (`bool`, default `True`)
`brighterFatterKernelFile`	Kernel file used for the brighter fatter correction (`str`, default `''`)
`brighterFatterMaxIter`	Maximum number of iterations for the brighter fatter correction (`int`, default `10`)
`brighterFatterThreshold`	Threshold used to stop iterating the brighter fatter correction.
`crosstalk`	Intra-CCD crosstalk correction (`ConfigurableInstance`, default `<class 'lsst.ip.isr.crosstalk.CrosstalkConfig'>`)
`darkDataProductName`	Name of the dark data product (`str`, default `'dark'`)
`datasetType`	Dataset type for input data; users will typically leave this alone, but camera-specific ISR tasks will override it (`str`, default `'raw'`)
`doAddDistortionModel`	Apply a distortion model based on camera geometry to the WCS? (`bool`, default `True`)
`doAssembleCcd`	Assemble amp-level exposures into a ccd-level exposure? (`bool`, default `True`)
`doAssembleIsrExposures`	Assemble amp-level calibration exposures into ccd-level exposure? (`bool`, default `False`)
`doAttachTransmissionCurve`	Construct and attach a wavelength-dependent throughput curve for this CCD image? (`bool`, default `False`)
`doBias`	Apply bias frame correction? (`bool`, default `True`)
`doBrighterFatter`	Apply the brighter fatter correction (`bool`, default `False`)
`doCrosstalk`	Apply intra-CCD crosstalk correction? (`bool`, default `False`)
`doDark`	Apply dark frame correction? (`bool`, default `True`)
`doDefect`	Apply correction for CCD defects, e.g.
`doEmpiricalReadNoise`	Calculate empirical read noise instead of value from AmpInfo data? (`bool`, default `False`)
`doFlat`	Apply flat field correction? (`bool`, default `True`)
`doFringe`	Apply fringe correction? (`bool`, default `True`)
`doLinearize`	Correct for nonlinearity of the detector’s response? (`bool`, default `True`)
`doNanInterpAfterFlat`	If True, ensure we interpolate NaNs after flat-fielding, even if we also have to interpolate them before flat-fielding.
`doSaturationInterpolation`	Perform interpolation over pixels masked as saturated? (`bool`, default `True`)
`doUseAtmosphereTransmission`	Load and use transmission_atmosphere (if doAttachTransmissionCurve is True)? (`bool`, default `True`)
`doUseFilterTransmission`	Load and use transmission_filter (if doAttachTransmissionCurve is True)? (`bool`, default `True`)
`doUseOpticsTransmission`	Load and use transmission_optics (if doAttachTransmissionCurve is True)? (`bool`, default `True`)
`doUseSensorTransmission`	Load and use transmission_sensor (if doAttachTransmissionCurve is True)? (`bool`, default `True`)
`doWrite`	Persist postISRCCD? (`bool`, default `True`)
`expectWcs`	Expect input science images to have a WCS (set False for e.g.
`fallbackFilterName`	Fallback default filter name for calibrations (`str`, default `None`)
`flatDataProductName`	Name of the flat data product (`str`, default `'flat'`)
`flatScalingType`	The method for scaling the flat on the fly.
`flatUserScale`	If flatScalingType is ‘USER’ then scale flat by this amount; ignored otherwise (`float`, default `1.0`)
`fluxMag0T1`	The approximate flux of a zero-magnitude object in a one-second exposure (`float`, default `10000000000.0`)
`fringe`	Fringe subtraction task (`ConfigurableInstance`, default `<class 'lsst.ip.isr.fringe.FringeConfig'>`)
`fringeAfterFlat`	Do fringe subtraction after flat-fielding? (`bool`, default `True`)
`fwhm`	FWHM of PSF (arcsec) (`float`, default `1.0`)
`gain`	The gain to use if no Detector is present in the Exposure (ignored if NaN) (`float`, default `nan`)
`growSaturationFootprintSize`	Number of pixels by which to grow the saturation footprints (`int`, default `1`)
`keysToRemoveFromAssembledCcd`	fields to remove from the metadata of the assembled ccd.
`overscanFitType`	The method for fitting the overscan bias level.
`overscanNumLeadingColumnsToSkip`	Number of columns to skip in overscan, i.e.
`overscanNumTrailingColumnsToSkip`	Number of columns to skip in overscan, i.e.
`overscanOrder`	Order of polynomial or to fit if overscan fit type is a polynomial, or number of spline knots if overscan fit type is a spline.
`overscanRej`	Rejection threshold (sigma) for collapsing overscan before fit (`float`, default `3.0`)
`readNoise`	The read noise to use if no Detector is present in the Exposure (`float`, default `0.0`)
`safe`	Safety margin for CFHT sensors gain determination (`float`, default `0.95`)
`saturatedMaskName`	Name of mask plane to use in saturation detection and interpolation (`str`, default `'SAT'`)
`saturation`	The saturation level to use if no Detector is present in the Exposure (ignored if NaN) (`float`, default `nan`)
`suspectMaskName`	Name of mask plane to use for suspect pixels (`str`, default `'SUSPECT'`)

Methods Summary

setDefaults() Derived config classes that must compute defaults rather than using the Field defaults should do so here.

Attributes Documentation

assembleCcd¶: CCD assembly task (ConfigurableInstance, default <class 'lsst.ip.isr.assembleCcdTask.AssembleCcdConfig'>)

biasDataProductName¶: Name of the bias data product (str, default 'bias')

brighterFatterApplyGain¶: Should the gain be applied when applying the brighter fatter correction? (bool, default True)

brighterFatterKernelFile¶: Kernel file used for the brighter fatter correction (str, default '')

brighterFatterMaxIter¶: Maximum number of iterations for the brighter fatter correction (int, default 10)

brighterFatterThreshold¶: Threshold used to stop iterating the brighter fatter correction. It is the absolute value of the difference between the current corrected image and the one from the previous iteration summed over all the pixels. (float, default 1000)

crosstalk¶: Intra-CCD crosstalk correction (ConfigurableInstance, default <class 'lsst.ip.isr.crosstalk.CrosstalkConfig'>)

darkDataProductName¶: Name of the dark data product (str, default 'dark')

datasetType¶: Dataset type for input data; users will typically leave this alone, but camera-specific ISR tasks will override it (str, default 'raw')

doAddDistortionModel¶: Apply a distortion model based on camera geometry to the WCS? (bool, default True)

doAssembleCcd¶: Assemble amp-level exposures into a ccd-level exposure? (bool, default True)

doAssembleIsrExposures¶: Assemble amp-level calibration exposures into ccd-level exposure? (bool, default False)

doAttachTransmissionCurve¶: Construct and attach a wavelength-dependent throughput curve for this CCD image? (bool, default False)

doBias¶: Apply bias frame correction? (bool, default True)

doBrighterFatter¶: Apply the brighter fatter correction (bool, default False)

doCrosstalk¶: Apply intra-CCD crosstalk correction? (bool, default False)

doDark¶: Apply dark frame correction? (bool, default True)

doDefect¶: Apply correction for CCD defects, e.g. hot pixels? (bool, default True)

doEmpiricalReadNoise¶: Calculate empirical read noise instead of value from AmpInfo data? (bool, default False)

doFlat¶: Apply flat field correction? (bool, default True)

doFringe¶: Apply fringe correction? (bool, default True)

doLinearize¶: Correct for nonlinearity of the detector’s response? (bool, default True)

doNanInterpAfterFlat¶: If True, ensure we interpolate NaNs after flat-fielding, even if we also have to interpolate them before flat-fielding. (bool, default False)

doSaturationInterpolation¶: Perform interpolation over pixels masked as saturated? (bool, default True)

doUseAtmosphereTransmission¶: Load and use transmission_atmosphere (if doAttachTransmissionCurve is True)? (bool, default True)

doUseFilterTransmission¶: Load and use transmission_filter (if doAttachTransmissionCurve is True)? (bool, default True)

doUseOpticsTransmission¶: Load and use transmission_optics (if doAttachTransmissionCurve is True)? (bool, default True)

doUseSensorTransmission¶: Load and use transmission_sensor (if doAttachTransmissionCurve is True)? (bool, default True)

doWrite¶: Persist postISRCCD? (bool, default True)

expectWcs¶: Expect input science images to have a WCS (set False for e.g. spectrographs) (bool, default True)

fallbackFilterName¶: Fallback default filter name for calibrations (str, default None)

flatDataProductName¶: Name of the flat data product (str, default 'flat')

flatScalingType¶

The method for scaling the flat on the fly. (str, default 'USER')

Allowed values:

'USER': Scale by flatUserScale
'MEAN': Scale by the inverse of the mean
'MEDIAN': Scale by the inverse of the median
'None': Field is optional

flatUserScale¶: If flatScalingType is ‘USER’ then scale flat by this amount; ignored otherwise (float, default 1.0)

fluxMag0T1¶: The approximate flux of a zero-magnitude object in a one-second exposure (float, default 10000000000.0)

fringe¶: Fringe subtraction task (ConfigurableInstance, default <class 'lsst.ip.isr.fringe.FringeConfig'>)

fringeAfterFlat¶: Do fringe subtraction after flat-fielding? (bool, default True)

fwhm¶: FWHM of PSF (arcsec) (float, default 1.0)

gain¶: The gain to use if no Detector is present in the Exposure (ignored if NaN) (float, default nan)

growSaturationFootprintSize¶: Number of pixels by which to grow the saturation footprints (int, default 1)

keysToRemoveFromAssembledCcd¶: fields to remove from the metadata of the assembled ccd. (List, default [])

overscanFitType¶

The method for fitting the overscan bias level. (str, default 'MEDIAN')

Allowed values:

'POLY': Fit ordinary polynomial to the longest axis of the overscan region
'CHEB': Fit Chebyshev polynomial to the longest axis of the overscan region
'LEG': Fit Legendre polynomial to the longest axis of the overscan region
'NATURAL_SPLINE': Fit natural spline to the longest axis of the overscan region
'CUBIC_SPLINE': Fit cubic spline to the longest axis of the overscan region
'AKIMA_SPLINE': Fit Akima spline to the longest axis of the overscan region
'MEAN': Correct using the mean of the overscan region
'MEDIAN': Correct using the median of the overscan region
'None': Field is optional

overscanNumLeadingColumnsToSkip¶: Number of columns to skip in overscan, i.e. those closest to amplifier (int, default 0)

overscanNumTrailingColumnsToSkip¶: Number of columns to skip in overscan, i.e. those farthest from amplifier (int, default 0)

overscanOrder¶: Order of polynomial or to fit if overscan fit type is a polynomial, or number of spline knots if overscan fit type is a spline. (int, default 1)

overscanRej¶: Rejection threshold (sigma) for collapsing overscan before fit (float, default 3.0)

readNoise¶: The read noise to use if no Detector is present in the Exposure (float, default 0.0)

safe¶: Safety margin for CFHT sensors gain determination (float, default 0.95)

saturatedMaskName¶: Name of mask plane to use in saturation detection and interpolation (str, default 'SAT')

saturation¶: The saturation level to use if no Detector is present in the Exposure (ignored if NaN) (float, default nan)

suspectMaskName¶: Name of mask plane to use for suspect pixels (str, default 'SUSPECT')

Methods Documentation

setDefaults()¶: Derived config classes that must compute defaults rather than using the Field defaults should do so here. To correctly use inherited defaults, implementations of setDefaults() must call their base class’ setDefaults()

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CfhtIsrTaskConfig¶