From 7f58aa20a306650a6817aaabdeeb4974cf27b807 Mon Sep 17 00:00:00 2001
From: Aaron LI <aaronly.me@outlook.com>
Date: Fri, 24 Feb 2017 10:37:34 +0800
Subject: Split 'get_xygrid()' from 'make_expmap.py' to 'acispy/image.py'

---
 acispy/image.py    | 22 ++++++++++++++++++++++
 bin/make_expmap.py | 20 +++-----------------
 2 files changed, 25 insertions(+), 17 deletions(-)
 create mode 100644 acispy/image.py

diff --git a/acispy/image.py b/acispy/image.py
new file mode 100644
index 0000000..0bcaf67
--- /dev/null
+++ b/acispy/image.py
@@ -0,0 +1,22 @@
+# Copyright (c) 2017 Weitian LI <liweitianux@live.com>
+# MIT license
+
+"""
+FITS image utilities
+"""
+
+import subprocess
+
+
+def get_xygrid(image):
+    """
+    Get the ``xygrid`` of the input image.
+    """
+    subprocess.check_call(["punlearn", "get_sky_limits"])
+    subprocess.check_call([
+        "get_sky_limits", "image=%s" % image, "verbose=0"
+    ])
+    xygrid = subprocess.check_output([
+        "pget", "get_sky_limits", "xygrid"
+    ]).decode("utf-8").strip()
+    return xygrid
diff --git a/bin/make_expmap.py b/bin/make_expmap.py
index ff1fbb0..1df4766 100755
--- a/bin/make_expmap.py
+++ b/bin/make_expmap.py
@@ -51,28 +51,13 @@ from acispy.manifest import get_manifest
 from acispy.pfiles import setup_pfiles
 from acispy.acis import ACIS
 from acispy.header import write_keyword
+from acispy.image import get_xygrid
 
 
 logging.basicConfig(level=logging.INFO)
 logger = logging.getLogger(__name__)
 
 
-def get_xygrid(image):
-    """
-    Get the ``xygrid`` of the input image for later ``mkexpmap``'s use.
-    """
-    logger.info("Get the 'xygrid' of image: %s" % image)
-    subprocess.check_call(["punlearn", "get_sky_limits"])
-    subprocess.check_call([
-        "get_sky_limits", "image=%s" % image, "verbose=0"
-    ])
-    xygrid = subprocess.check_output([
-        "pget", "get_sky_limits", "xygrid"
-    ]).decode("utf-8").strip()
-    logger.info("xygrid: %s" % xygrid)
-    return xygrid
-
-
 def make_aspect_histogram(outfile, asol, evtfile, chip, clobber=False):
     """
     Create the aspect histogram for each chip, detailing the aspect
@@ -211,6 +196,7 @@ def main():
     logger.info("msk: %s" % msk)
 
     xygrid = get_xygrid(args.infile)
+    logger.info("%s:xygrid: %s" % (args.infile, xygrid))
     expmaps = []
 
     for c in chips:
@@ -237,7 +223,7 @@ def main():
     logger.info("Update keyword 'DETNAM' to %s" % detnam)
     write_keyword(args.outfile, keyword="DETNAM", value=detnam)
 
-    # Add created exposure map and exposure-corrected image to manifest
+    logger.info("Add created exposure map to manifest ...")
     key = "expmap"
     manifest.setpath(key, args.outfile)
     logger.info("Added '%s' to manifest: %s" % (key, manifest.get(key)))
-- 
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