Пример #1
0
def makeLinearizerDecam(fromFile, force=False, verbose=False):
    """Convert the specified DECam linearity FITS table to standard LSST format

    Details:
    - Input format is one table per CCD, HDU is amplifier number,
        the table has 3 columns: ADU, ADU_LINEAR_A, ADU_LINEAR_B.
        The values of ADU contiguous (0, 1, 2...) but check and error out if not.
        The values of the latter two are replacements (0+delta0, 1+delta1, 2+delta2...)
        and this is converted to offsets for the LSST linearization tables (delta0, delta1, delta2...)
    - Output is a set of LinearizeLookupTable instances, one per CCD, saved as dataset type "linearizer"
    - The row indices for the linearization lookup table are (row index=amp name): 0=A, 1=B

    @param[in] fromFile  path to DECam linearity table (a FITS file with one HDU per amplifier)
    """
    print("Making DECam linearizers from %r" % (fromFile, ))
    butler = Butler(mapper=DecamMapper)
    linearizerDir = DecamMapper.getLinearizerDir()
    if os.path.exists(linearizerDir):
        if not force:
            print("Output directory %r exists; use --force to replace" %
                  (linearizerDir, ))
            sys.exit(1)
        print("Replacing data in linearizer directory %r" % (linearizerDir, ))
    else:
        print("Creating linearizer directory %r" % (linearizerDir, ))
        os.makedirs(linearizerDir)

    camera = DecamMapper().camera
    fromHDUs = fits.open(fromFile)[1:]  # HDU 0 has no data
    assert len(fromHDUs) == len(camera)
    for ccdind, (detector, hdu) in enumerate(zip(camera, fromHDUs)):
        ccdnum = ccdind + 1
        if verbose:
            print("ccdnum=%s; detector=%s" % (ccdnum, detector.getName()))
        fromData = hdu.data
        assert len(fromData.dtype) == 3
        lsstTable = np.zeros((2, len(fromData)), dtype=np.float32)
        uncorr = fromData["ADU"]
        if not np.allclose(uncorr, np.arange(len(fromData))):
            raise RuntimeError(
                "ADU data not a range of integers starting at 0")
        for i, ampName in enumerate("AB"):
            # convert DECam replacement table to LSST offset table
            if verbose:
                print("DECam table for %s=%s..." % (
                    ampName,
                    fromData["ADU_LINEAR_" + ampName][0:5],
                ))
            lsstTable[i, :] = fromData["ADU_LINEAR_" + ampName] - uncorr
            if verbose:
                print("LSST  table for %s=%s..." % (
                    ampName,
                    lsstTable[i, 0:5],
                ))
        linearizer = LinearizeLookupTable(table=lsstTable, detector=detector)
        butler.put(linearizer, "linearizer", dataId=dict(ccdnum=ccdnum))
    print("Wrote %s linearizers" % (ccdind + 1, ))
Пример #2
0
    def getSourcesAndCoeffsFile(self, filename='DECam_xtalk_20130606.txt'):
        """File containing DECam crosstalk coefficients.

        This text file is provided by NOAO in a particular format with
        information about the DECam crosstalk coefficients. It is available at
        http://www.ctio.noao.edu/noao/content/DECam-Calibration-Files

        Parameters
        ----------
        filename : `str`, optional
            File containing the decam crosstalk coefficients, from NOAO.

        Returns
        -------
        result : `str`
            Full path to filename.
        """
        mapper = DecamMapper()
        packageName = mapper.getPackageName()
        packageDir = getPackageDir(packageName)
        return os.path.join(packageDir, 'decam', filename)
Пример #3
0
def makeLinearizerDecam(fromFile, force=False, verbose=False):
    """Convert the specified DECam linearity FITS table to standard LSST format

    Details:
    - Input format is one table per CCD, HDU is amplifier number,
        the table has 3 columns: ADU, ADU_LINEAR_A, ADU_LINEAR_B.
        The values of ADU contiguous (0, 1, 2...) but check and error out if not.
        The values of the latter two are replacements (0+delta0, 1+delta1, 2+delta2...)
        and this is converted to offsets for the LSST linearization tables (delta0, delta1, delta2...)
    - Output is a set of LinearizeLookupTable instances, one per CCD, saved as dataset type "linearizer"
    - The row indices for the linearization lookup table are (row index=amp name): 0=A, 1=B

    @param[in] fromFile  path to DECam linearity table (a FITS file with one HDU per amplifier)
    """
    print("Making DECam linearizers from %r" % (fromFile,))
    butler = Butler(mapper=DecamMapper)
    linearizerDir = DecamMapper.getLinearizerDir()
    if os.path.exists(linearizerDir):
        if not force:
            print("Output directory %r exists; use --force to replace" % (linearizerDir,))
            sys.exit(1)
        print("Replacing data in linearizer directory %r" % (linearizerDir,))
    else:
        print("Creating linearizer directory %r" % (linearizerDir,))
        os.makedirs(linearizerDir)

    camera = DecamMapper().camera
    fromHDUs = fits.open(fromFile)[1:] # HDU 0 has no data
    assert len(fromHDUs) == len(camera)
    for ccdind, (detector, hdu) in enumerate(izip(camera, fromHDUs)):
        ccdnum = ccdind + 1
        if verbose:
            print("ccdnum=%s; detector=%s" % (ccdnum, detector.getName()))
        fromData = hdu.data
        assert len(fromData.dtype) == 3
        lsstTable = np.zeros((2, len(fromData)), dtype=np.float32)
        uncorr = fromData["ADU"]
        if not np.allclose(uncorr, np.arange(len(fromData))):
            raise RuntimeError("ADU data not a range of integers starting at 0")
        for i, ampName in enumerate("AB"):
            # convert DECam replacement table to LSST offset table
            if verbose:
                print("DECam table for %s=%s..." % (ampName, fromData["ADU_LINEAR_" + ampName][0:5],))
            lsstTable[i,:] = fromData["ADU_LINEAR_" + ampName] - uncorr
            if verbose:
                print("LSST  table for %s=%s..." % (ampName, lsstTable[i,0:5],))
        linearizer = LinearizeLookupTable(table=lsstTable, detector=detector)
        butler.put(linearizer, "linearizer", dataId=dict(ccdnum=ccdnum))
    print("Wrote %s linearizers" % (ccdind+1,))
Пример #4
0
def makeDetectorCrosstalk(dataDict, force=False):
    """Generate and write CrosstalkCalib from dictionary.

    Parameters
    ----------
    dataDict : `dict`
        Dictionary from ``readFile`` containing crosstalk definition.
    """
    dataDict['coeffs'] = dataDict['coeffs'].transpose()

    decamCT = ipIsr.crosstalk.CrosstalkCalib.fromDict(dataDict)
    # Supply a date prior to all data, to ensure universal use.
    decamCT.updateMetadata(setDate=False, CALIBDATE='1970-01-01T00:00:00')

    detName = dataDict['DETECTOR_NAME']
    outDir = os.path.join(DecamMapper.getCrosstalkDir(), detName.lower())
    if os.path.exists(outDir):
        if not force:
            print("Output directory %r exists; use --force to replace" %
                  (outDir, ))
            sys.exit(1)
    else:
        os.makedirs(outDir)
    decamCT.writeText(f"{outDir}/1970-01-01T00:00:00.yaml")
    camConfig.transformDict = tmc

    def makeDir(dirPath, doClobber=False):
        """Make a directory; if it exists then clobber or fail, depending on doClobber

        @param[in] dirPath: path of directory to create
        @param[in] doClobber: what to do if dirPath already exists:
            if True and dirPath is a dir, then delete it and recreate it, else raise an exception
        @throw RuntimeError if dirPath exists and doClobber False
        """
        if os.path.exists(dirPath):
            if doClobber and os.path.isdir(dirPath):
                print "Clobbering directory %r" % (dirPath,)
                shutil.rmtree(dirPath)
            else:
                raise RuntimeError("Directory %r exists" % (dirPath,))
        print "Creating directory %r" % (dirPath,)
        os.makedirs(dirPath)

    # write data products
    outDir = args.OutputDir
    makeDir(dirPath=outDir, doClobber=args.clobber)

    camConfigPath = os.path.join(outDir, "camera.py")
    camConfig.save(camConfigPath)

    for detectorName, ampTable in ampTableDict.iteritems():
        shortDetectorName = DecamMapper.getShortCcdName(detectorName)
        ampInfoPath = os.path.join(outDir, shortDetectorName + ".fits")
        ampTable.writeFits(ampInfoPath)
    camConfig.transformDict = tmc

    def makeDir(dirPath, doClobber=False):
        """Make a directory; if it exists then clobber or fail, depending on doClobber

        @param[in] dirPath: path of directory to create
        @param[in] doClobber: what to do if dirPath already exists:
            if True and dirPath is a dir, then delete it and recreate it, else raise an exception
        @throw RuntimeError if dirPath exists and doClobber False
        """
        if os.path.exists(dirPath):
            if doClobber and os.path.isdir(dirPath):
                print("Clobbering directory %r" % (dirPath,))
                shutil.rmtree(dirPath)
            else:
                raise RuntimeError("Directory %r exists" % (dirPath,))
        print("Creating directory %r" % (dirPath,))
        os.makedirs(dirPath)

    # write data products
    outDir = args.OutputDir
    makeDir(dirPath=outDir, doClobber=args.clobber)

    camConfigPath = os.path.join(outDir, "camera.py")
    camConfig.save(camConfigPath)

    for detectorName, ampTable in ampTableDict.items():
        shortDetectorName = DecamMapper.getShortCcdName(detectorName)
        ampInfoPath = os.path.join(outDir, shortDetectorName + ".fits")
        ampTable.writeFits(ampInfoPath)
Пример #7
0
def getButler(datadir):
    bf = dafPersist.ButlerFactory(
        mapper=DecamMapper(root=os.path.join(datadir, "DATA"),
                           calibRoot=os.path.join(datadir, "CALIB")))
    return bf.create()
Пример #8
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        description="Convert a DECam crosstalk file into LSST CrosstalkCalibs."
    )
    parser.add_argument(dest="crosstalkInfile", help="DECam crosstalk file.")
    parser.add_argument("-v",
                        "--verbose",
                        action="store_true",
                        help="Print data about each detector.")
    parser.add_argument("-f",
                        "--force",
                        action="store_true",
                        help="Overwrite existing CrosstalkCalibs.")
    cmd = parser.parse_args()

    outDict = readFile(crosstalkInfile=cmd.crosstalkInfile)

    crosstalkDir = DecamMapper.getCrosstalkDir()
    if os.path.exists(crosstalkDir):
        if not cmd.force:
            print("Output directory %r exists; use --force to replace" %
                  (crosstalkDir, ))
            sys.exit(1)
        print("Replacing data in crosstalk directory %r" % (crosstalkDir, ))
    else:
        print("Creating crosstalk directory %r" % (crosstalkDir, ))
        os.makedirs(crosstalkDir)
    for detName in outDict:
        if cmd.verbose:
            print(
                f"{detName}: has crosstalk? {outDict[detName]['hasCrosstalk']}"
            )
            print(f"COEFF:\n{outDict[detName]['coeffs']}")
Пример #9
0
 def setUp(self):
     self.bf = dafPersist.ButlerFactory(mapper=DecamMapper(root="."))
     self.butler = self.bf.create()