Bugfix for #569 and generator infidelity bug.

Fixes a bug in the germs details tables reported in #569. The issue was that the wrong model was being pulled from the switchboard as the target model.

Also includes and unrelated fix for the generator infidelity in reports which was accidentally pulling in the average gate infidelity.

Author: Corey Ostrove

pygsti/report/reportables.py

@@ -1634,7 +1634,7 @@ def generator_infidelity(a, b, mx_basis):
 
     return _tools.generator_infidelity(a, b, mx_basis)
 
-Generator_infidelity = _modf.opsfn_factory(avg_gate_infidelity)
+Generator_infidelity = _modf.opsfn_factory(generator_infidelity)
 # init args == (model1, model2, op_label)
 
 def model_model_angles_btwn_axes(a, b, mx_basis):  # Note: default 'gm' basis

pygsti/report/section/gauge.py

@@ -125,15 +125,15 @@ class GaugeInvariantsGermsSection(_Section):
     def final_gates_vs_target_table_gauge_invgerms(workspace, switchboard=None, confidence_level=None,
                                                    ci_brevity=1, **kwargs):
         return workspace.GatesVsTargetTable(
-            switchboard.mdl_gaugeinv, switchboard.mdl_gaugeinv_ep,
+            switchboard.mdl_gaugeinv, switchboard.mdl_target,
             _cri_gauge_inv(0, switchboard, confidence_level, ci_brevity),
             display=('evdiamond', 'evnudiamond'), virtual_ops=switchboard.germs
         )
 
     @_Section.figure_factory(3)
     def germs_eigenvalue_table(workspace, switchboard=None, confidence_level=None, ci_brevity=1, **kwargs):
         return workspace.GateEigenvalueTable(
-            switchboard.mdl_gaugeinv, switchboard.mdl_gaugeinv_ep,
+            switchboard.mdl_gaugeinv, switchboard.mdl_target,
             _cri_gauge_inv(1, switchboard, confidence_level, ci_brevity),
             display=('evals', 'target', 'absdiff-evals', 'infdiff-evals', 'log-evals', 'absdiff-log-evals'),
             virtual_ops=switchboard.germs