diff --git a/cal_tools/cal_tools/tools.py b/cal_tools/cal_tools/tools.py
index 5f1170d52d52f63d55ed8a535f24e52d435c1e55..d2d480d3116b1abdad828b9778ccb455586d36f3 100644
--- a/cal_tools/cal_tools/tools.py
+++ b/cal_tools/cal_tools/tools.py
@@ -264,13 +264,15 @@ def get_dir_creation_date(directory: str, run: int,
     ntries = 100
     while ntries > 0:
         try:
-            dates = []
-            for f in directory.glob('*.h5'):
-                with h5py.File(f, 'r') as fin:
-                    cdate = fin['METADATA/creationDate'][0].decode()
-                    cdate = datetime.datetime.strptime(cdate, "%Y%m%dT%H%M%SZ")
-                    dates.append(cdate)
-            return min(dates)
+            rfiles = list(directory.glob('*.h5'))
+            rfiles.sort(key=path.getmtime)
+            # get creation time for oldest file,
+            # as creation time between run files
+            # should be different only within few seconds
+            with h5py.File(rfiles[0], 'r') as fin:
+                cdate = fin['METADATA/creationDate'][0].decode()
+                cdate = datetime.datetime.strptime(cdate, "%Y%m%dT%H%M%SZ")
+            return cdate
         except (IOError, ValueError):
             ntries -= 1
         except KeyError:  # The files are here, but it's an older dataset
diff --git a/notebooks/AGIPD/AGIPD_Retrieve_Constants_Precorrection.ipynb b/notebooks/AGIPD/AGIPD_Retrieve_Constants_Precorrection.ipynb
index e19a03b99b81b8394b893ed27e44288fabe9e932..ff59e54189eaec5d49481e77698b83dcaca5495f 100644
--- a/notebooks/AGIPD/AGIPD_Retrieve_Constants_Precorrection.ipynb
+++ b/notebooks/AGIPD/AGIPD_Retrieve_Constants_Precorrection.ipynb
@@ -293,9 +293,6 @@
     "    if acq_rate == 0.:\n",
     "        acq_rate = get_acq_rate((f, karabo_id, idx))\n",
     "\n",
-    "    print(f\"Set memory cells to {max_cells}\")\n",
-    "    print(f\"Set acquistion rate cells to {acq_rate} MHz\")\n",
-    "\n",
     "    # avoid creating retireving constant, if requested.\n",
     "    if not nodb_with_dark:  \n",
     "        const_dict = assemble_constant_dict(corr_bools, pc_bools, max_cells, bias_voltage,\n",
@@ -311,7 +308,7 @@
     "                co, mdata = \\\n",
     "                    get_from_db(dev, getattr(Constants.AGIPD, cname)(),\n",
     "                                condition, getattr(np, cval[0])(cval[1]),\n",
-    "                                cal_db_interface, creation_time, meta_only=True)\n",
+    "                                cal_db_interface, creation_time, meta_only=True, verbosity=0)\n",
     "                mdata_const = mdata.calibration_constant_version\n",
     "                # saving metadata in a dict\n",
     "                mdata_dict[cname] = dict()\n",