net2txt.py

## This program used to conv .net(generate by mxa) to .txt
import sys
import numpy as np
import os

if len(sys.argv) < 2:
    print("Usage: python net2txt.py <filename_without_ext>")
    sys.exit(1)

base = sys.argv[1]

infile  = base + ".net"
outfile = base + ".txt"

if not os.path.exists(infile):
    print(f"Input file not found: {infile}")
    sys.exit(1)

nbin = 4096
emin = 0.0
emax = 2048.0
header_size = 1024

bin_width = (emax - emin) / nbin

with open(infile, "rb") as f:
    f.seek(header_size)
    counts = np.fromfile(f, dtype=np.int32, count=nbin)

energy = emin + (np.arange(nbin) + 0.5) * bin_width  # bin 中心

with open(outfile, "w") as f:
    f.write("# Energy_keV  Counts\n")
    for e, c in zip(energy, counts):
        f.write(f"{e:.3f} {c}\n")

print(f"Saved spectrum to {outfile}")