Move randomize_events.py to astro/chandra

1 files changed, 0 insertions, 72 deletions

diff --git a/astro/randomize_events.py b/astro/randomize_events.py
deleted file mode 100755
index e1a6e31..0000000
--- a/astro/randomize_events.py
+++ /dev/null
@@ -1,72 +0,0 @@
-#!/usr/bin/env python3
-#
-# Randomize the (X,Y) position of each X-ray photon events according
-# to a Gaussian distribution of given sigma.
-#
-# References:
-# [1] G. Scheellenberger, T.H. Reiprich, L. Lovisari, J. Nevalainen & L. David
-#     2015, A&A, 575, A30
-#
-#
-# Aaron LI
-# Created: 2016-03-24
-# Updated: 2016-03-24
-#
-
-from astropy.io import fits
-import numpy as np
-
-import os
-import sys
-import datetime
-import argparse
-
-
-CHANDRA_ARCSEC_PER_PIXEL = 0.492
-
-def randomize_events(infile, outfile, sigma, clobber=False):
-    """
-    Randomize the position (X,Y) of each X-ray event according to a
-    specified size/sigma Gaussian distribution.
-    """
-    sigma_pix = sigma / CHANDRA_ARCSEC_PER_PIXEL
-    evt_fits = fits.open(infile)
-    evt_table = evt_fits[1].data
-    # (X,Y) physical coordinate
-    evt_x = evt_table["x"]
-    evt_y = evt_table["y"]
-    rand_x = np.random.normal(scale=sigma_pix, size=evt_x.shape)\
-            .astype(evt_x.dtype)
-    rand_y = np.random.normal(scale=sigma_pix, size=evt_y.shape)\
-            .astype(evt_y.dtype)
-    evt_x += rand_x
-    evt_y += rand_y
-    # Add history to FITS header
-    evt_hdr = evt_fits[1].header
-    evt_hdr.add_history("TOOL: %s @ %s" % (
-            os.path.basename(sys.argv[0]),
-            datetime.datetime.utcnow().isoformat()))
-    evt_hdr.add_history("COMMAND: %s" % " ".join(sys.argv))
-    evt_fits.writeto(outfile, clobber=clobber, checksum=True)
-
-
-def main():
-    parser = argparse.ArgumentParser(
-            description="Randomize the (X,Y) of each X-ray event")
-    parser.add_argument("infile", help="input event file")
-    parser.add_argument("outfile", help="output randomized event file")
-    parser.add_argument("-s", "--sigma", dest="sigma",
-            required=True, type=float,
-            help="sigma/size of the Gaussian distribution used" + \
-                 "to randomize the position of events (unit: arcsec)")
-    parser.add_argument("-C", "--clobber", dest="clobber",
-            action="store_true", help="overwrite output file if exists")
-    args = parser.parse_args()
-
-    randomize_events(args.infile, args.outfile,
-            sigma=args.sigma, clobber=args.clobber)
-
-
-if __name__ == "__main__":
-    main()
-