def calc_bb_unbinned(gta, energies, times, conv, prob, tmin=0., tmax=1e20):
"""
Calculate unbinned bayesian blocks from a
FT1 file with src probabilities
Parameters
----------
gta: `~fermipy.GTAnalysis` object
The fermipy analysis object
energies: `~numpy.ndarray`
array with photon energies
times: `~numpy.ndarray`
array with photon arrival times
conv: `~numpy.ndarray`
array with photon conversion types
prob: `~numpy.ndarray`
array with photon src probabilities
{options}
tmin: float
mininum time for events in MET
tmax: float
maxinum time for events in MET
Returns
-------
tuple with bins, times, exposure , src probability, and energies
"""
from fermiAnalysis import adaptivebinning as ab
# cut on times
m = (times >= tmin) & (times < tmax)
energies = energies[m]
times = times[m]
conv = conv[m]
prob = prob[m]
# calculate exposure in bins of energy
EMeVbins = gta.energies
EMeVbins = np.array([1e2, 1e3])
EMeVbins = np.logspace(np.log10(energies.min()), np.log10(energies.max()),
4)
EMeV = np.sqrt(EMeVbins[1:] * EMeVbins[:-1])
EMeV = [500.]
exp = np.zeros_like(prob)
for ie, e in enumerate(EMeV):
me = (energies >= EMeVbins[ie]) & (energies < EMeVbins[ie + 1])
texp, f, b = ab.comp_exposure_phi(gta, energy=e)
mt = (texp >= times.min() - 60.) & (texp < times.max() + 60.)
splinef = interp1d(texp[mt], f[mt], kind='nearest')
splineb = interp1d(texp[mt], b[mt], kind='nearest')
mef = me & conv.astype(np.bool) & \
(times >= texp[mt].min()) & \
(times <= texp[mt].max())
meb = me & (~conv.astype(np.bool)) & \
(times >= texp[mt].min()) & \
(times <= texp[mt].max())
exp[meb] = splineb(times[meb]) / b.max()
exp[mef] = splinef(times[mef]) / f.max()
if np.sum(exp > 0.):
logging.info("Calculating unbinned BBs")
bins = bayesian_blocks(times[exp > 0.], exp=(exp / prob)[exp > 0.])
else:
logging.error(
"Exp > 0. everywhere, selecting one bin over entire time range")
bins = np.array([times.min(), times.max()])
return bins, times, exp, prob, energies
def main():
usage = "usage: %(prog)s -c config.yaml"
description = "Run the lc analysis"
parser = argparse.ArgumentParser(usage=usage, description=description)
parser.add_argument('-c', '--conf', required=True)
parser.add_argument('-i',
required=False,
default=0,
help='Set local or scratch calculation',
type=int)
parser.add_argument('--state',
help='analysis state',
choices=['avgspec', 'setup'],
default='avgspec')
parser.add_argument('--forcepl',
default=0,
help='Force the target source to have power-law shape',
type=int)
parser.add_argument('--createsed',
default=0,
help='Create SED from best fit model',
type=int)
parser.add_argument(
'--adaptive',
default=0,
help='Use adaptive binning for minute scale light curves',
type=int)
parser.add_argument('--srcprob', default = 0,
help='Calculate the source probability for the photons,' \
' only works when no sub orbit time scales are used',
type=int)
parser.add_argument(
'--mincounts',
default=2,
help='Minimum number of counts within LC bin to run analysis',
type=int)
parser.add_argument('--simulate', default = None,
help='None or full path to yaml file which contains src name' \
'and spec to be simulated',
)
parser.add_argument(
'--make_plots',
default=0,
type=int,
help='Create sed plot',
)
parser.add_argument(
'--randomize',
default=1,
help=
'If you simulate, use Poisson realization. If false, use Asimov data set',
type=int)
args = parser.parse_args()
utils.init_logging('DEBUG')
config = yaml.load(open(args.conf))
tmpdir, job_id = lsf.init_lsf()
if not job_id:
job_id = args.i
logging.info('tmpdir: {0:s}, job_id: {1:n}'.format(tmpdir, job_id))
os.chdir(tmpdir) # go to tmp directory
logging.info('Entering directory {0:s}'.format(tmpdir))
logging.info('PWD is {0:s}'.format(os.environ["PWD"]))
# copy the ft1,ft2 and ltcube files
#for k in ['evfile','scfile','ltcube']:
# don't stage them, done automatically by fermipy if needed
# config[k] = utils.copy2scratch(config[k], tmpdir)
# set the scratch directories
logging.debug(config['data'])
config['fileio']['scratchdir'] = tmpdir
# set the log file
logdir = copy.deepcopy(config['fileio']['logfile'])
config['fileio']['logfile'] = path.join(tmpdir, 'fermipy.log')
# debugging: all files will be saved (default is False)
#config['fileio']['savefits'] = True
# if simulating an orbit, save fits files
if args.simulate is not None:
config['fileio']['savefits'] = True
# copy all fits files already present in outdir
# run the analysis
lc_config = copy.deepcopy(config['lightcurve'])
fit_config = copy.deepcopy(config['fit_pars'])
# remove parameters from config file not accepted by fermipy
for k in ['configname', 'tmp', 'log', 'fit_pars']:
config.pop(k, None)
if 'adaptive' in config['lightcurve'].keys():
config['lightcurve'].pop('adaptive', None)
# set the correct time bin
config['selection']['tmin'], config['selection']['tmax'], nj = set_lc_bin(
config['selection']['tmin'],
config['selection']['tmax'],
config['lightcurve']['binsz'],
job_id - 1 if job_id > 0 else 0,
ft1=config['data']['evfile'])
logging.debug('setting light curve bin' + \
'{0:n}, between {1[tmin]:.0f} and {1[tmax]:.0f}'.format(job_id, config['selection']))
if args.adaptive:
config['fileio']['outdir'] = utils.mkdir(
path.join(config['fileio']['outdir'],
'adaptive{0:.0f}/'.format(lc_config['adaptive'])))
if args.state == 'setup':
config['fileio']['outdir'] = utils.mkdir(
path.join(config['fileio']['outdir'],
'setup{0:05n}/'.format(job_id if job_id > 0 else 1)))
else:
config['fileio']['outdir'] = utils.mkdir(
path.join(config['fileio']['outdir'],
'{0:05n}/'.format(job_id if job_id > 0 else 1)))
logging.info('Starting with fermipy analysis')
logging.info('using fermipy version {0:s}'.format(fermipy.__version__))
logging.info('located at {0:s}'.format(fermipy.__file__))
if config['data']['ltcube'] == '':
config['data'].pop('ltcube', None)
compute_sub_gti_lc = False
if type(config['lightcurve']['binsz']) == str:
if len(config['lightcurve']['binsz'].strip('gti')):
compute_sub_gti_lc = True
if config['lightcurve']['binsz'].find('min') > 0:
config['lightcurve']['binsz'] = float(
config['lightcurve']['binsz'].strip('gti').strip(
'min')) * 60.
logging.info("set time bin length to {0:.2f}s".format(
config['lightcurve']['binsz']))
else:
config['lightcurve']['binsz'] = 3. * 3600.
try:
gta = GTAnalysis(config, logging={'verbosity': 3})
except Exception as e:
logging.error("{0}".format(e))
config['selection']['target'] = None
gta = GTAnalysis(config, logging={'verbosity': 3})
sep = gta.roi.sources[0]['offset']
logging.warning(
"Source closets to ROI center is {0:.3f} degree away".format(sep))
if sep < 0.1:
config['selection']['target'] = gta.roi.sources[0]['name']
gta.config['selection']['target'] = config['selection']['target']
logging.info("Set target to {0:s}".format(
config['selection']['target']))
# stage the full time array analysis results to the tmp dir
# do not copy png images
files = [
fn for fn in glob(fit_config['avgspec'])
if fn.find('.xml') > 0 or fn.find('.npy') > 0
]
files += [config['data']['evfile']]
utils.copy2scratch(files, gta.workdir)
# we're using actual data
if args.simulate is None:
# check before the analysis start if there are any events in the master file
# in the specified time range
logging.info('Checking for events in initial ft1 file')
t = Table.read(path.join(gta.workdir,
path.basename(config['data']['evfile'])),
hdu='EVENTS')
logging.info("times in base ft1: {0} {1} {2}".format(
t["TIME"].max(), t["TIME"].min(),
t["TIME"].max() - t["TIME"].min()))
m = (t["TIME"] >= config['selection']['tmin']) & (
t["TIME"] <= config['selection']['tmax'])
if np.sum(m) < args.mincounts + 1:
logging.error(
"*** Only {0:n} events between tmin and tmax! Exiting".format(
np.sum(m)))
assert np.sum(m) > args.mincounts
else:
logging.info("{0:n} events between tmin and tmax".format(
np.sum(m)))
# check how many bins are in each potential light curve bin
if compute_sub_gti_lc:
# select time of first and last
# photon instead of GTI time
m = (t["TIME"] >= config['selection']['tmin']) & \
(t["TIME"] <= config['selection']['tmax'])
tmin = t["TIME"][m].min() - 1.
tmax = t["TIME"][m].max() + 1.
logging.info("There will be up to {0:n} time bins".format(np.ceil(
(tmax - tmin) / \
config['lightcurve']['binsz'])))
bins = np.arange(tmin, tmax, config['lightcurve']['binsz'])
bins = np.concatenate([bins, [config['selection']['tmax']]])
counts = calc_counts(t, bins)
# remove the starting times of the bins with zero counts
# and rebin the data
logging.info("Counts before rebinning: {0}".format(counts))
mincounts = 10.
mc = counts < mincounts
if np.sum(mc):
# remove trailing zeros
if np.any(counts == 0.):
mcounts_post, mcounts_pre = rm_trailing_zeros(counts)
counts = counts[mcounts_post & mcounts_pre]
bins = np.concatenate([
bins[:-1][mcounts_post & mcounts_pre],
[bins[1:][mcounts_post & mcounts_pre].max()]
])
bins = rebin(counts, bins)
logging.info("Bin lengths after rebinning: {0}".format(
np.diff(bins)))
logging.info("Bin times after rebinning: {0}".format(bins))
counts = calc_counts(t, bins)
logging.info("Counts after rebinning: {0}".format(counts))
else:
logging.info("Regular time binning will be used")
bins = list(bins)
logging.info('Running fermipy setup')
try:
gta.setup()
except (RuntimeError, IndexError) as e:
logging.error(
'Caught Runtime/Index Error while initializing analysis object')
logging.error('Printing error:')
logging.error(e)
if e.message.find("File not found") >= 0 and e.message.find(
'srcmap') >= 0:
logging.error("*** Srcmap calculation failed ***")
if e.message.find("NDSKEYS") >= 0 and e.message.find('srcmap') >= 0:
logging.error(
"*** Srcmap calculation failed with NDSKEYS keyword not found in header ***"
)
logging.info("Checking if there are events in ft1 file")
ft1 = path.join(gta.workdir, 'ft1_00.fits')
f = glob(ft1)
if not len(f):
logging.error(
"*** no ft1 file found at location {0:s}".format(ft1))
raise
t = Table.read(f[0], hdu='EVENTS')
if not len(t):
logging.error("*** The ft1 file contains no events!! ***".format(
len(t)))
else:
logging.info("The ft1 file contains {0:n} event(s)".format(len(t)))
return
# end here if you only want to calulate
# intermediate fits files
if args.state == 'setup':
return gta
logging.info('Loading the fit for the average spectrum')
gta.load_roi('avgspec') # reload the average spectral fit
logging.info('Running fermipy optimize and fit')
# we're using actual data
if args.simulate is None:
if args.forcepl:
gta = set_src_spec_pl(
gta, gta.get_source_name(config['selection']['target']))
# to do add EBL absorption at some stage ...
# gta = add_ebl_atten(gta, gta.get_source_name(config['selection']['target']), fit_config['z'])
# make sure you are fitting data
gta.simulate_roi(restore=True)
if compute_sub_gti_lc:
if args.adaptive:
# do import only here since root must be compiled
from fermiAnalysis import adaptivebinning as ab
# compute the exposure
energy = 1000.
texp, front, back = ab.comp_exposure_phi(gta, energy=1000.)
# compute the bins
result = ab.time_bins(
gta,
texp,
0.5 * (front + back),
#critval = 20., # bins with ~20% unc
critval=lc_config['adaptive'],
Epivot=None, # compute on the fly
# tstart = config['selection']['tmin'],
# tstop = config['selection']['tmax']
)
# cut the bins to this GTI
mask = result['tstop'] > config['selection']['tmin']
mask = mask & (result['tstart'] < config['selection']['tmax'])
# try again with catalog values
if not np.sum(mask):
logging.error(
"Adaptive bins outside time window, trying catalog values for flux"
)
result = ab.time_bins(
gta,
texp,
0.5 * (front + back),
critval=lc_config['adaptive'], # bins with ~20% unc
Epivot=None, # compute on the fly
forcecatalog=True,
# tstart = config['selection']['tmin'],
# tstop = config['selection']['tmax']
)
# cut the bins to this GTI
mask = result['tstop'] > config['selection']['tmin']
mask = mask & (result['tstart'] <
config['selection']['tmax'])
if not np.sum(mask):
logging.error(
"Adaptive bins do not cover selected time interval!"
)
logging.error("Using original bins")
else:
bins = np.concatenate((result['tstart'][mask],
[result['tstop'][mask][-1]]))
bins[0] = np.max(
[config['selection']['tmin'], bins[0]])
bins[-1] = np.min(
[config['selection']['tmax'], bins[-1]])
bins = list(bins)
# removing trailing zeros
counts = calc_counts(t, bins)
mcounts_post, mcounts_pre = rm_trailing_zeros(counts)
logging.info(
"count masks: {0} {1}, bins: {2}, counts: {3}".
format(mcounts_post, mcounts_pre, bins, counts))
counts = counts[mcounts_post & mcounts_pre]
bins = np.concatenate([
np.array(bins)[:-1][mcounts_post & mcounts_pre],
[
np.array(bins)[1:][mcounts_post
& mcounts_pre].max()
]
])
logging.info(
"Using bins {0}, total n={1:n} bins".format(
bins,
len(bins) - 1))
logging.info("bins widths : {0}".format(np.diff(bins)))
logging.info("counts per bin: {0} ".format(
calc_counts(t, bins)))
bins = list(bins)
# TODO: test that this is working also with GTIs that have little or no counts
lc = gta.lightcurve(
config['selection']['target'],
binsz=config['lightcurve']['binsz'],
free_background=config['lightcurve']['free_background'],
free_params=config['lightcurve']['free_params'],
free_radius=config['lightcurve']['free_radius'],
make_plots=False,
multithread=True,
nthread=4,
#multithread = False,
#nthread = 1,
save_bin_data=True,
shape_ts_threshold=16.,
use_scaled_srcmap=True,
use_local_ltcube=True,
write_fits=True,
write_npy=True,
time_bins=bins,
outdir='{0:.0f}s'.format(config['lightcurve']['binsz']))
else:
# run the fitting of the entire time and energy range
try:
o = gta.optimize() # perform an initial fit
logging.debug(o)
except RuntimeError as e:
logging.error("Error in optimize: {0}".format(e))
logging.info("Trying to continue ...")
gta = set_free_pars_lc(gta, config, fit_config)
f = gta.fit()
if 'fix_sources' in fit_config.keys():
skip = fit_config['fix_sources'].keys()
else:
skip = []
gta, f = refit(gta,
config['selection']['target'],
f,
fit_config['ts_fixed'],
skip=skip)
gta.print_roi()
gta.write_roi('lc')
if args.createsed:
if args.make_plots:
init_matplotlib_backend()
gta.load_roi('lc') # reload the average spectral fit
logging.info('Running sed for {0[target]:s}'.format(
config['selection']))
sed = gta.sed(config['selection']['target'],
prefix = 'lc_sed',
free_radius = None if config['sed']['free_radius'] == 0. \
else config['sed']['free_radius'],
free_background= config['sed']['free_background'],
free_pars = fa.allnorm,
make_plots = args.make_plots,
cov_scale = config['sed']['cov_scale'],
use_local_index = config['sed']['use_local_index'],
bin_index = config['sed']['bin_index']
)
# debugging: calculate sed and resid maps for each light curve bin
#logging.info('Running sed for {0[target]:s}'.format(config['selection']))
#sed = gta.sed(config['selection']['target'], prefix = 'lc')
#model = {'Scale': 1000., 'Index' : fit_config['new_src_pl_index'], 'SpatialModel' : 'PointSource'}
#resid_maps = gta.residmap('lc',model=model, make_plots=True, write_fits = True, write_npy = True)
if args.srcprob:
logging.info("Running srcprob with srcmdl {0:s}".format('lc'))
gta.compute_srcprob(xmlfile='lc', overwrite=True)
# we are simulating a source
else:
# TODO: I probably have to run the setup here. Do on weekly files, i.e., no time cut? Only do that later?
with open(args.simulate) as f:
simsource = np.load(f, allow_pickle=True).flat[0]
# set the source to the simulation value
gta.set_source_spectrum(
simsource['target'],
spectrum_type=simsource['spectrum_type'],
spectrum_pars=simsource['spectrum_pars'][job_id - 1])
logging.info("changed spectral parameters to {0}".format(
gta.roi.get_source_by_name(simsource['target']).spectral_pars))
# simulate the ROI
gta.simulate_roi(randomize=bool(args.randomize))
gta = set_free_pars_lc(gta, config, fit_config)
# fit the simulation
f = gta.fit()
gta, f = refit(gta, config['selection']['target'], f,
fit_config['ts_fixed'])
gta.print_roi()
gta.write_roi('lc_simulate_{0:s}'.format(simsource['suffix']))
return gta
#except Exception as e:
# logging.error("{0}".format(e))
# config['selection']['target'] = None
# gta = GTAnalysis(config,logging={'verbosity' : 3})
sep = gta.roi.sources[0]['offset']
print (config['selection']['target'])
# logging.warning("Source closets to ROI center is {0:.3f} degree away".format(sep))
# if sep < 0.1:
# config['selection']['target'] = gta.roi.sources[0]['name']
# gta.config['selection']['target'] = config['selection']['target']
# logging.info("Set target to {0:s}".format(config['selection']['target']))
#logging.info("Calculating exposure for {0:.1f} MeV".format(energy))
front, back = [],[]
for energy in earray:
texp, f, b = ab.comp_exposure_phi(gta, energy = energy)
front.append(f)
back.append(f)
front = np.array(front)
back = np.array(back)
np.savez(texp_file, texp = texp, front = front,
back = back, earray = earray)
logging.info("Saved exposure to {0:s}".format(texp_file))
# read in likelihood vs norm / flux
# convert to alp coupling using the generate script
# plot the color bars for each time bin, check the SED plotting script
outpath = path.join(snconfig['outbase'],s, args.snmodel, 'products')
walkerfile = path.join(outpath, 'walkers.json')