Commit 3ef43b0ee3f5d4a5b942c4d1775ac7cf9caf4eaf
1 parent
910cb4f3
renamed from sensivitity_pull.py
Showing
1 changed file
with
209 additions
and
0 deletions
examples/make_pull_at_sensitivity_limit.py
0 → 100755
| 1 | +#! /usr/bin/env python | ||
| 2 | +# ========================================================================== | ||
| 3 | +# This script generates pull distributions for a source at the 5 sigma | ||
| 4 | +# sensitivity limit. The script makes use of the "processing" Python module, | ||
| 5 | +# if available, that can be used for parallel computing on multiple | ||
| 6 | +# cores/CPUs. | ||
| 7 | +# | ||
| 8 | +# Required 3rd party modules: | ||
| 9 | +# - processing (optional) | ||
| 10 | +# | ||
| 11 | +# Copyright (C) 2011 Jurgen Knodlseder | ||
| 12 | +# | ||
| 13 | +# This program is free software: you can redistribute it and/or modify | ||
| 14 | +# it under the terms of the GNU General Public License as published by | ||
| 15 | +# the Free Software Foundation, either version 3 of the License, or | ||
| 16 | +# (at your option) any later version. | ||
| 17 | +# | ||
| 18 | +# This program is distributed in the hope that it will be useful, | ||
| 19 | +# but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 20 | +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| 21 | +# GNU General Public License for more details. | ||
| 22 | +# | ||
| 23 | +# You should have received a copy of the GNU General Public License | ||
| 24 | +# along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
| 25 | +# | ||
| 26 | +# ========================================================================== | ||
| 27 | +from ctatools import * | ||
| 28 | +from gammalib import * | ||
| 29 | +from cspull import * | ||
| 30 | +import sys | ||
| 31 | +import time | ||
| 32 | + | ||
| 33 | +# Try importing processing module | ||
| 34 | +has_processing = False | ||
| 35 | +try: | ||
| 36 | + import processing | ||
| 37 | + has_processing = True | ||
| 38 | +except: | ||
| 39 | + pass | ||
| 40 | + | ||
| 41 | + | ||
| 42 | +# ======================== # | ||
| 43 | +# Create pull distribution # | ||
| 44 | +# ======================== # | ||
| 45 | +def create_pull(loge, emin, emax, models, ntrials=100, duration=180000.0, \ | ||
| 46 | + enumbins=0, log=False): | ||
| 47 | + """ | ||
| 48 | + Create pull distribution | ||
| 49 | + | ||
| 50 | + Parameters: | ||
| 51 | + emin - Minimum energy (TeV) | ||
| 52 | + emax - Maximum energy (TeV) | ||
| 53 | + Keywords: | ||
| 54 | + log - Create log file(s) | ||
| 55 | + """ | ||
| 56 | + # Generate output filename | ||
| 57 | + outfile = "pull_"+loge+".dat" | ||
| 58 | + | ||
| 59 | + # Setup cspull tool | ||
| 60 | + pull = cspull() | ||
| 61 | + pull.models(models) | ||
| 62 | + pull["outfile"] = outfile | ||
| 63 | + pull["ntrials"] = ntrials | ||
| 64 | + pull["caldb"] = "$GAMMALIB/share/caldb/cta" | ||
| 65 | + pull["irf"] = "kb_E_50h_v3" | ||
| 66 | + pull["ra"] = 83.6331 | ||
| 67 | + pull["dec"] = 22.0145 | ||
| 68 | + pull["emin"] = emin | ||
| 69 | + pull["emax"] = emax | ||
| 70 | + pull["enumbins"] = enumbins | ||
| 71 | + pull["duration"] = duration | ||
| 72 | + | ||
| 73 | + # Optionally open the log file | ||
| 74 | + if log: | ||
| 75 | + pull.logFileOpen() | ||
| 76 | + | ||
| 77 | + # Run tool | ||
| 78 | + pull.run() | ||
| 79 | + | ||
| 80 | + # Return | ||
| 81 | + return | ||
| 82 | + | ||
| 83 | + | ||
| 84 | +# ============ # | ||
| 85 | +# Create model # | ||
| 86 | +# ============ # | ||
| 87 | +def create_model(flux, index=-2.48, fitidx=False): | ||
| 88 | + """ | ||
| 89 | + Add standard CTA background model to observations container. | ||
| 90 | + We use a simple power law here, scaled to Konrad's E configuration | ||
| 91 | + performance table. | ||
| 92 | + | ||
| 93 | + Parameters: | ||
| 94 | + flux - Flux in Crab units | ||
| 95 | + """ | ||
| 96 | + # Define background model | ||
| 97 | + bgd_radial = GCTAModelRadialGauss(3.0) | ||
| 98 | + bgd_spectrum = GModelSpectralPlaw(61.8, -1.85) | ||
| 99 | + bgd_spectrum["Prefactor"].scale(1.0e-6) | ||
| 100 | + bgd_spectrum["PivotEnergy"].value(1.0) | ||
| 101 | + bgd_spectrum["PivotEnergy"].scale(1.0e6) | ||
| 102 | + if fitidx: | ||
| 103 | + bgd_spectrum["Index"].free() | ||
| 104 | + else: | ||
| 105 | + bgd_spectrum["Index"].fix() | ||
| 106 | + bgd_model = GCTAModelRadialAcceptance(bgd_radial, bgd_spectrum) | ||
| 107 | + bgd_model.name("Background") | ||
| 108 | + bgd_model.instruments("CTA") | ||
| 109 | + | ||
| 110 | + # Define source spectrum | ||
| 111 | + location = GSkyDir() | ||
| 112 | + location.radec_deg(83.6331, 22.0145) | ||
| 113 | + src_spatial = GModelSpatialPtsrc(location) | ||
| 114 | + src_spectrum = GModelSpectralPlaw(flux, index) | ||
| 115 | + src_spectrum["Prefactor"].scale(5.7e-16) | ||
| 116 | + src_spectrum["PivotEnergy"].value(0.3) | ||
| 117 | + src_spectrum["PivotEnergy"].scale(1.0e6) | ||
| 118 | + if fitidx: | ||
| 119 | + src_spectrum["Index"].free() | ||
| 120 | + else: | ||
| 121 | + src_spectrum["Index"].fix() | ||
| 122 | + src_model = GModelPointSource(src_spatial, src_spectrum) | ||
| 123 | + src_model.name("Test") | ||
| 124 | + | ||
| 125 | + # Add models to container | ||
| 126 | + models = GModels() | ||
| 127 | + models.append(bgd_model) | ||
| 128 | + models.append(src_model) | ||
| 129 | + | ||
| 130 | + # Return model container | ||
| 131 | + return models | ||
| 132 | + | ||
| 133 | + | ||
| 134 | +# ======================== # | ||
| 135 | +# Main routine entry point # | ||
| 136 | +# ======================== # | ||
| 137 | +if __name__ == '__main__': | ||
| 138 | + """ | ||
| 139 | + Create pull distributions for the energy bands and fluxes given in the | ||
| 140 | + file specified in the argument. The file needs to be created using the | ||
| 141 | + cssens script. | ||
| 142 | + """ | ||
| 143 | + # Get input arguments | ||
| 144 | + usage = "make_pull_at_sensitivity_limit filename [max_threads]" | ||
| 145 | + if len(sys.argv) < 2 or len(sys.argv) > 3: | ||
| 146 | + print usage | ||
| 147 | + sys.exit() | ||
| 148 | + | ||
| 149 | + # Get sensitivity file | ||
| 150 | + filename = sys.argv[1] | ||
| 151 | + | ||
| 152 | + # Set maximum number of threads | ||
| 153 | + if len(sys.argv) > 2: | ||
| 154 | + max_threads = int(sys.argv[2]) | ||
| 155 | + else: | ||
| 156 | + max_threads = 1 | ||
| 157 | + | ||
| 158 | + # Load sensitivity file | ||
| 159 | + file = open(filename, 'r') | ||
| 160 | + reader = csv.DictReader(file) | ||
| 161 | + | ||
| 162 | + # Loop over rows | ||
| 163 | + for row in reader: | ||
| 164 | + | ||
| 165 | + # Get parameters | ||
| 166 | + loge = float(row['loge']) | ||
| 167 | + if loge < 0: | ||
| 168 | + loge = "m"+str(abs(loge)) | ||
| 169 | + else: | ||
| 170 | + loge = "p"+str(abs(loge)) | ||
| 171 | + emin = float(row['emin']) | ||
| 172 | + emax = float(row['emax']) | ||
| 173 | + flux = float(row['crab']) | ||
| 174 | + | ||
| 175 | + # Generate model | ||
| 176 | + models = create_model(flux) | ||
| 177 | + | ||
| 178 | + # Processing support? | ||
| 179 | + if has_processing: | ||
| 180 | + | ||
| 181 | + # Wait until one thread has finished | ||
| 182 | + while len(processing.activeChildren()) >= max_threads: | ||
| 183 | + time.sleep(60) | ||
| 184 | + | ||
| 185 | + # Set arguments | ||
| 186 | + args = (loge, emin, emax, models) | ||
| 187 | + kwargs = {} | ||
| 188 | + | ||
| 189 | + # Generate pull distribution | ||
| 190 | + p = processing.Process(target=create_pull, args=args, kwargs=kwargs) | ||
| 191 | + p.start() | ||
| 192 | + print "Process emin=%.4f emax=%.4f started." % (emin, emax) | ||
| 193 | + | ||
| 194 | + # Wait some time | ||
| 195 | + time.sleep(1) | ||
| 196 | + | ||
| 197 | + # ... no | ||
| 198 | + else: | ||
| 199 | + create_pull(loge, emin, emax, models) | ||
| 200 | + | ||
| 201 | + # Processing support | ||
| 202 | + if has_processing: | ||
| 203 | + | ||
| 204 | + # Wait until all threads finished | ||
| 205 | + while len(processing.activeChildren()) > 0: | ||
| 206 | + time.sleep(60) | ||
| 207 | + | ||
| 208 | + # Close file | ||
| 209 | + file.close() |