Merge pull request #3411 from matteobachetti/patch-1

Author: bsipocz

CHANGES.rst

@@ -67,6 +67,7 @@ heasarc
 - Heasarc.locate_data returns empty rows with an error in the error_message column if there are
   no data associated with that row rather than filtering it out. [#3275]
 - Heasarc.locate_data changed to use POST request instead of GET to accomodate large requests. [#3356]
+- Preserve size of mask when all values are False in HeasarcClass.locate_data [#3411]
 
 imcce
 ^^^^^
@@ -2292,4 +2293,4 @@ Infrastructure, Utility and Other Changes and Additions
 0.1 (2013-09-19)
 ================
 
-- Initial release.  Includes features!
+- Initial release.  Includes features!

astroquery/heasarc/core.py

@@ -533,7 +533,8 @@ def locate_data(self, query_result=None, catalog_name=None):
         # that report errors (usually means there are no data products)
         dl_result = dl_result[np.ma.mask_or(
             dl_result['content_type'] == 'directory',
-            dl_result['error_message'] != ''
+            dl_result['error_message'] != '',
+            shrink=False
         )]
         dl_result = dl_result[['ID', 'access_url', 'content_length', 'error_message']]