jpssrdr: open h5 files as ro

edosl0util/cli/rdrmerge.py

@@ -99,7 +99,7 @@ def main():
     parser.add_argument("rdr", nargs="+", help="Any science rdr (RVIRS, RCRIS, RATMS)")
     args = parser.parse_args()
 
-    if not args.rdrs:
+    if not args.rdr:
         parser.exit(1, "no RDR's provided")
 
     for o in merge_rdrs(args.rdr):

edosl0util/jpssrdr.py

@@ -229,7 +229,7 @@ def decode_rdr_blob(buf):
 
 
 def rdr_datasets(filepath):
-    fobj = H5File(filepath)
+    fobj = H5File(filepath, mode='r')
     rdr = dict(
         telemetry=_rdrs_for_packet_dataset(_find_telemetry_group(fobj)),
         diagnostic=_rdrs_for_packet_dataset(_find_diag_group(fobj)),