diff --git a/test/test_ctselect.py b/test/test_ctselect.py
index 9a845ef..39471de 100755
--- a/test/test_ctselect.py
+++ b/test/test_ctselect.py
@@ -59,6 +59,7 @@ class Test(test):
         self.append(self._test_empty_ctselect_tool, 'CTSELECT - Test empty ctselect tool')
         self.append(self._test_saving_empty_does_nothing, 'CTSELECT - Test saving empty does nothing')
         self.append(self._test_with_parameters,'CTSELECT - Test with parameters')
+        self.append(self._test_time_selcetion,'CTSELECT - Test time selection')
         self.append(self._test_for_ctselect_copy,'CTSELECT - Test ctselect copy')
         self.append(self._test_set_emin_emax, 'CTSELECT - Test set emin emax')
         self.append(self._test_energy_range_beyond_covered, 'CTSELECT - Test energy range beyond energies covered')
@@ -343,6 +344,28 @@ class Test(test):
         # Return
         return
 
+    # Unit Test time selection
+    def _test_time_selection(self):
+        """
+        Unit Test time selection
+
+        """
+        select = self._setup(inobs=self._events,tmin=0.0,tmax=10.0,emin=0.2,emax=80,outobs='ctselect_pyTimeSelection.fits',logfile='ctselect_pyTimeSelection.log')
+
+        # Run ctselect tool
+        select.logFileOpen()   # Make sure we get a log file
+        select.run()
+        select.save()
+
+        # Check result file
+        self._check_result_file('ctselect_pyTimeSelection.fits', 'time selection',nevents=10)
+
+
+        self._teardown(select)
+
+        # Return
+        return
+
     # Unit Test for ctselect copy
     def _test_for_ctselect_copy(self):
         """