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-rwxr-xr-xastro/suzaku/make_photon_list.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/astro/suzaku/make_photon_list.py b/astro/suzaku/make_photon_list.py
index d8fe679..8ffe7a9 100755
--- a/astro/suzaku/make_photon_list.py
+++ b/astro/suzaku/make_photon_list.py
@@ -355,7 +355,7 @@ def main():
header_out.add_history(" ".join(sys.argv))
logger.info("Creating photons table ...")
photons = np.row_stack(photonlist)
- photons.sort(axis=0) # sort by time in place
+ photons = photons[photons[:, 0].argsort()] # sort by time (1st column)
hdu = fits.BinTableHDU.from_columns([
fits.Column(name="PHOTON_TIME", format="D", unit="s",
array=photons[:, 0]),