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generate_data.py
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Gregory Ashton authoredGregory Ashton authored
generate_data.py 2.64 KiB
import pyfstat
import numpy as np
import os
import sys
import time
ID = sys.argv[1]
outdir = sys.argv[2]
label = 'run_{}'.format(ID)
data_label = '{}_data'.format(label)
results_file_name = '{}/MCResults_{}.txt'.format(outdir, ID)
# Properties of the GW data
sqrtSX = 1e-23
tstart = 1000000000
Tspan = 100*86400
tend = tstart + Tspan
# Fixed properties of the signal
F0_center = 30
F1_center = -1e-10
F2 = 0
Alpha = np.radians(83.6292)
Delta = np.radians(22.0144)
tref = .5*(tstart+tend)
VF0 = VF1 = 100
DeltaF0 = VF0 * np.sqrt(3)/(np.pi*Tspan)
DeltaF1 = VF1 * np.sqrt(45/4.)/(np.pi*Tspan**2)
depths = np.linspace(100, 400, 9)
depths = [118.75, 156.25]
nsteps = 25
run_setup = [((nsteps, 0), 20, False),
((nsteps, 0), 7, False),
((nsteps, 0), 2, False),
((nsteps, nsteps), 1, False)]
for depth in depths:
h0 = sqrtSX / float(depth)
F0 = F0_center + np.random.uniform(-0.5, 0.5)*DeltaF0
F1 = F1_center + np.random.uniform(-0.5, 0.5)*DeltaF1
psi = np.random.uniform(-np.pi/4, np.pi/4)
phi = np.random.uniform(0, 2*np.pi)
cosi = np.random.uniform(-1, 1)
data = pyfstat.Writer(
label=data_label, outdir=outdir, tref=tref,
tstart=tstart, F0=F0, F1=F1, F2=F2, duration=Tspan, Alpha=Alpha,
Delta=Delta, h0=h0, sqrtSX=sqrtSX, psi=psi, phi=phi, cosi=cosi,
detector='H1,L1')
data.make_data()
startTime = time.time()
theta_prior = {'F0': {'type': 'unif',
'lower': F0_center-DeltaF0,
'upper': F0_center+DeltaF0},
'F1': {'type': 'unif',
'lower': F1_center-DeltaF1,
'upper': F1_center+DeltaF1},
'F2': F2,
'Alpha': Alpha,
'Delta': Delta
}
ntemps = 2
log10temperature_min = -1
nwalkers = 100
mcmc = pyfstat.MCMCFollowUpSearch(
label=label, outdir=outdir,
sftfilepath='{}/*{}*sft'.format(outdir, data_label),
theta_prior=theta_prior,
tref=tref, minStartTime=tstart, maxStartTime=tend,
nwalkers=nwalkers, ntemps=ntemps,
log10temperature_min=log10temperature_min)
mcmc.run(run_setup=run_setup, create_plots=False, log_table=False,
gen_tex_table=False)
mcmc.print_summary()
d, maxtwoF = mcmc.get_max_twoF()
dF0 = F0 - d['F0']
dF1 = F1 - d['F1']
runTime = time.time() - startTime
with open(results_file_name, 'a') as f:
f.write('{} {:1.8e} {:1.8e} {:1.8e} {:1.8e} {}\n'
.format(depth, h0, dF0, dF1, maxtwoF, runTime))
os.system('rm {}/*{}*'.format(outdir, label))