m-thesis-introduction/simulations/airshower_beacon_simulation/modify_clocks.py

81 lines
2.1 KiB
Python
Executable file

#!/usr/bin/env python3
import numpy as np
import json
import h5py
import os.path as path
from copy import deepcopy as copy
from earsim import REvent, Antenna
import generate_beacon as beacon
import lib
clocks_fname = 'clocks.csv'
if __name__ == "__main__":
from os import path
import sys
max_clock_offset = 100# ns
remake_clock_offsets = False
seed = 12345
rng = np.random.default_rng(seed)
fname = "ZH_airshower/mysim.sry"
####
fname_dir = path.dirname(fname)
clocks_fname = path.join(fname_dir, clocks_fname)
antennas_fname = path.join(fname_dir, beacon.antennas_fname)
if path.isfile(clocks_fname) and not remake_clock_offsets:
print("Clock offsets previously generated")
sys.exit()
if not path.isfile(antennas_fname):
print("Antenna file cannot be found, did you try generating a beacon?")
sys.exit(1)
# read in antennas
with h5py.File(antennas_fname, 'a') as fp:
if 'antennas' not in fp.keys():
print("Antenna file corrupted? no antennas")
sys.exit(1)
group = fp['antennas']
N_antennas = len(group.keys())
clock_offsets = max_clock_offset * (2*rng.uniform(size=N_antennas) - 1)
# modify time values of each antenna
for i, name in enumerate(group.keys()):
ant_group = group[name]
clk_offset = clock_offsets[i]
if 'traces' not in ant_group.keys():
print(f"Antenna file corrupted? no 'traces' in {name}")
sys.exit(1)
ant_attrs = ant_group.attrs
if 'clock_offset' in ant_attrs:
tmp_offset = ant_attrs['clock_offset']
if remake_clock_offsets:
ant_group['traces'][0, :] -= tmp_offset
else:
clock_offsets[i] = tmp_offset
continue
ant_attrs['clock_offset'] = clk_offset
ant_group['traces'][0, :] += clk_offset
# save to simple csv
np.savetxt(clocks_fname, clock_offsets)
print("Antenna clocks modified in " + str(antennas_fname))