diff options
Diffstat (limited to 'astro')
| -rwxr-xr-x | astro/spectrum/crosstalk_deprojection.py | 142 |
1 files changed, 85 insertions, 57 deletions
diff --git a/astro/spectrum/crosstalk_deprojection.py b/astro/spectrum/crosstalk_deprojection.py index 0c04d77..a7aa30a 100755 --- a/astro/spectrum/crosstalk_deprojection.py +++ b/astro/spectrum/crosstalk_deprojection.py @@ -4,7 +4,11 @@ # 2016-03-26 # # Change log: -# 2017-11-12: Cleanups +# 2017-11-12: +# * Various cleanups +# * Add 'info_emin' and 'info_emax' configuration options +# * Remove command line arguments +# * Add global configurations variable 'CONFIGS' # 2016-06-07: # * Explain the errors/uncertainties calculation approach # 2016-04-20: @@ -84,16 +88,23 @@ mode = both # supply a *groupped* spectrum (from which the "GROUPING" and "QUALITY" # are used to group all the following spectra) grouping = spec_grp.pi -# whether to subtract the background before crosstalk correction +# whether to subtract the background before crosstalk correction and +# deprojection. (default: True) subtract_bkg = True # whether to fix the negative channel values due to spectral subtractions +# (default: False) fix_negative = False -# Monte Carlo times for spectral error estimation +# Monte Carlo times for spectral error estimation (default: 5000) mc_times = 5000 -# show progress details and verbose information +# show progress details and verbose information (default: True) verbose = True -# overwrite existing files +# overwrite existing files (default: False) clobber = False +# energy band within which the spectral data changes (due to e.g., +# background subtraction, crosstalk correction) will be reported. +# default: 0.5 - 7.0 keV +info_emin = 0.5 +info_emax = 7.0 # NOTE: # ONLY specifiy ONE set of projected spectra (i.e., from the same detector @@ -143,7 +154,7 @@ from astropy.io import fits from configobj import ConfigObj -__version__ = "0.5.5" +__version__ = "0.5.6" __date__ = "2017-11-12" WARNING = """ @@ -154,6 +165,9 @@ especially the metal abundances and normalizations. ****************************************************************************** """ +# Global configurations +CONFIGS = {} + def group_data(data, grouping): """ @@ -479,8 +493,9 @@ class Spectrum: # {{{ spec_dtype = None spec_fits_format = None - def __init__(self, filename): + def __init__(self, filename, regid=None): self.filename = filename + self.regid = regid with fits.open(filename) as fitsobj: ext_spec = fitsobj["SPECTRUM"] self.header = ext_spec.header.copy(strip=True) @@ -511,6 +526,12 @@ class Spectrum: # {{{ self.ANCRFILE = self.header.get("ANCRFILE") self.BACKFILE = self.header.get("BACKFILE") + def __str__(self): + if self.regid: + return self.regid + else: + return self.filename + def get_data(self, group_squeeze=False, copy=True): """ Get the spectral data (i.e., self.spec_data). @@ -740,8 +761,9 @@ class SpectrumSet(Spectrum): # {{{ _spec_dtype = np.float64 _spec_fits_format = "D" - def __init__(self, filename, outfile=None, arf=None, rmf=None, bkg=None): - super().__init__(filename=filename) + def __init__(self, filename, regid=None, outfile=None, + arf=None, rmf=None, bkg=None): + super().__init__(filename=filename, regid=regid) self.outfile = outfile # convert spectrum data type if necessary if self.spec_data.dtype != self._spec_dtype: @@ -922,7 +944,12 @@ class SpectrumSet(Spectrum): # {{{ (self.filename, ratio, self.bkg.filename)) if verbose: print(operation, file=sys.stderr) + datasum1 = np.sum(self.spec_data) spec_data_subbkg = self.spec_data - ratio * self.bkg.get_data() + datasum2 = np.sum(spec_data_subbkg) + datacp = 100 * (datasum2-datasum1) / datasum1 + print("[%s] bkg subtraction: %g -> %g (%.2f%%)" % + (str(self), datasum1, datasum2, datacp)) if inplace: self.spec_data = spec_data_subbkg self.spec_bkg_subtracted = True @@ -1456,16 +1483,6 @@ def calc_median_errors(results): upperpcs = results[int(mc_times * 0.8415)] errors = np.sqrt(0.5 * ((medians-lowerpcs)**2 + (upperpcs-medians)**2)) return (medians, errors) - - -def set_argument(name, default, cmdargs, config): - value = default - if name in config.keys(): - value = config.as_bool(name) - value_cmd = vars(cmdargs)[name] - if value_cmd != default: - value = value_cmd # command arguments overwrite others - return value # helper functions }}} @@ -1780,57 +1797,68 @@ def main_crosstalk(config, subtract_bkg, fix_negative, mc_times, if __name__ == "__main__": - # arguments' default values - default_mode = "both" - default_mc_times = 5000 - # commandline arguments parser parser = argparse.ArgumentParser( description="Correct the crosstalk effects for XMM EPIC spectra", epilog="Version: %s (%s)" % (__version__, __date__)) parser.add_argument("config", help="config file in which describes " + "the crosstalk relations ('ConfigObj' syntax)") - parser.add_argument("-m", "--mode", dest="mode", default=default_mode, - help="operation mode (both | crosstalk | deprojection)") - parser.add_argument("-B", "--no-subtract-bkg", dest="subtract_bkg", - action="store_false", help="do NOT subtract background first") - parser.add_argument("-N", "--fix-negative", dest="fix_negative", - action="store_true", help="fix negative channel values") - parser.add_argument("-M", "--mc-times", dest="mc_times", - type=int, default=default_mc_times, - help="Monte Carlo times for error estimation") - parser.add_argument("-C", "--clobber", dest="clobber", - action="store_true", help="overwrite output file if exists") - parser.add_argument("-v", "--verbose", dest="verbose", - action="store_true", help="show verbose information") args = parser.parse_args() - # merge commandline arguments and config - config = ConfigObj(args.config) - subtract_bkg = set_argument("subtract_bkg", True, args, config) - fix_negative = set_argument("fix_negative", False, args, config) - verbose = set_argument("verbose", False, args, config) - clobber = set_argument("clobber", False, args, config) - # operation mode - mode = config.get("mode", default_mode) - if args.mode != default_mode: - mode = args.mode - # Monte Carlo times - mc_times = config.as_int("mc_times") - if args.mc_times != default_mc_times: - mc_times = args.mc_times + + configs = ConfigObj(args.config) + # Operation mode (default: both) + mode = configs.get("mode", "both") + CONFIGS.update(mode=mode) + # Monte Carlo times to estimate the errors (default: 5000 iterations) + mc_times = int(configs.get("mc_times", 5000)) + CONFIGS.update(mc_times=mc_times) + # Whether to subtract background first (default: True) + try: + subtract_bkg = configs.as_bool("subtract_bkg") + except KeyError: + subtract_bkg = True + CONFIGS.update(subtract_bkg=subtract_bkg) + # Whether to fix the negative values after correction (default: False) + try: + fix_negative = configs.as_bool("fix_negative") + except KeyError: + fix_negative = False + CONFIGS.update(fix_negative=fix_negative) + # Whether to show verbose information (default: True) + try: + verbose = configs.as_bool("verbose") + except KeyError: + verbose = True + CONFIGS.update(verbose=verbose) + # Whether to overwrite existing output files (default: False) + try: + clobber = configs.as_bool("clobber") + except KeyError: + clobber = True + CONFIGS.update(clobber=clobber) + # Energy band within which to report the spectral data changes + # (default: 0.5-7.0 keV) + try: + info_emin = configs.as_float("info_emin") + except KeyError: + info_emin = 0.5 + try: + info_emax = configs.as_float("info_emax") + except KeyError: + info_emax = 7.0 + CONFIGS.update(info_emin=info_emin, info_emax=info_emax) + + for k, v in CONFIGS: + print("* %s: %s" % (k, v)) if mode.lower() == "both": print("MODE: CROSSTALK + DEPROJECTION", file=sys.stderr) - main(config, subtract_bkg=subtract_bkg, fix_negative=fix_negative, - mc_times=mc_times, verbose=verbose, clobber=clobber) + main(configs, **CONFIGS) elif mode.lower() == "deprojection": print("MODE: DEPROJECTION", file=sys.stderr) - main_deprojection(config, mc_times=mc_times, - verbose=verbose, clobber=clobber) + main_deprojection(configs, **CONFIGS) elif mode.lower() == "crosstalk": print("MODE: CROSSTALK", file=sys.stderr) - main_crosstalk(config, subtract_bkg=subtract_bkg, - fix_negative=fix_negative, mc_times=mc_times, - verbose=verbose, clobber=clobber) + main_crosstalk(configs, **CONFIGS) else: raise ValueError("Invalid operation mode: %s" % mode) print(WARNING) |