Select Git revision
make_fake_data.py
Forked from
Gregory Ashton / PyFstat
141 commits behind the upstream repository.
-
Gregory Ashton authoredGregory Ashton authored
make_fake_data.py 1.59 KiB
from pyfstat import Writer, GlitchWriter
import numpy as np
# First, we generate data with a reasonably strong smooth signal
# Define parameters of the Crab pulsar as an example
F0 = 30.0
F1 = -1e-10
F2 = 0
Alpha = np.radians(83.6292)
Delta = np.radians(22.0144)
tref = 362750407.0
# Signal strength
h0 = 1e-23
# Properties of the GW data
sqrtSX = 1e-22
tstart = 1000000000
duration = 100*86400
tend = tstart+duration
data = Writer(
label='basic', outdir='data', tref=tref, tstart=tstart, F0=F0, F1=F1,
F2=F2, duration=duration, Alpha=Alpha, Delta=Delta, h0=h0, sqrtSX=sqrtSX)
data.make_data()
# The predicted twoF, given by lalapps_predictFstat can be accessed by
twoF = data.predict_fstat()
print 'Predicted twoF value: {}\n'.format(twoF)
# Next, taking the same signal parameters, we include a glitch half way through
dtglitch = duration/2.0
delta_F0 = 4e-5
delta_F1 = 0
glitch_data = GlitchWriter(
label='glitch', outdir='data', tref=tref, tstart=tstart, F0=F0, F1=F1,
F2=F2, duration=duration, Alpha=Alpha, Delta=Delta, h0=h0, sqrtSX=sqrtSX,
dtglitch=dtglitch, delta_F0=delta_F0, delta_F1=delta_F1)
glitch_data.make_data()
# Making data with two glitches
dtglitch = [duration/4.0, 4*duration/5.0]
delta_phi = [0, 0]
delta_F0 = [4e-6, 3e-7]
delta_F1 = [0, 0]
delta_F2 = [0, 0]
two_glitch_data = GlitchWriter(
label='twoglitch', outdir='data', tref=tref, tstart=tstart, F0=F0, F1=F1,
F2=F2, duration=duration, Alpha=Alpha, Delta=Delta, h0=h0, sqrtSX=sqrtSX,
dtglitch=dtglitch, delta_phi=delta_phi, delta_F0=delta_F0,
delta_F1=delta_F1, delta_F2=delta_F2)
two_glitch_data.make_data()