diff --git a/notebooks/AGIPD/Characterize_AGIPD_Gain_Darks_NBC.ipynb b/notebooks/AGIPD/Characterize_AGIPD_Gain_Darks_NBC.ipynb
index ada299a6fc235f7c7d976b112001ee72a57eeca7..c96767431c649a4f1a9caedcb257bc67cb764b11 100644
--- a/notebooks/AGIPD/Characterize_AGIPD_Gain_Darks_NBC.ipynb
+++ b/notebooks/AGIPD/Characterize_AGIPD_Gain_Darks_NBC.ipynb
@@ -654,29 +654,49 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "md = None\n",
-    "\n",
-    "for qm in res:\n",
-    "    db_module = qm_dict[qm][\"db_module\"]\n",
-    "    for const in res[qm]:\n",
-    "        dconst = getattr(iCalibrationDB.Constants.AGIPD, const)()\n",
-    "        dconst.data = res[qm][const]\n",
-    "\n",
-    "        if db_output:\n",
-    "            md = send_to_db(db_module, karabo_id, dconst, condition, file_loc,\n",
-    "                            report, cal_db_interface, creation_time=creation_time,\n",
-    "                            timeout=cal_db_timeout)\n",
-    "\n",
-    "        if local_output:\n",
-    "            md = save_const_to_h5(db_module, karabo_id, dconst, condition, dconst.data,\n",
-    "                                  file_loc, report, creation_time, out_folder)\n",
-    "            print(f\"Calibration constant {const} for {qm} is stored locally in {file_loc}.\\n\")\n",
-    "\n",
-    "    print(\"Constants parameter conditions are:\\n\")\n",
-    "    print(f\"• memory_cells: {max_cells}\\n• bias_voltage: {bias_voltage}\\n\"\n",
-    "          f\"• acquisition_rate: {acq_rate}\\n• gain_setting: {gain_setting}\\n\"\n",
-    "          f\"• gain_mode: {fixed_gain_mode}\\n\"\n",
-    "          f\"• creation_time: {md.calibration_constant_version.begin_at if md is not None else creation_time}\\n\")"
+    "# Retrieve existing constants for comparison\n",
+    "qm_x_const = [(qm, const) for const in res[qm] for qm in res]\n",
+    "print('Retrieve pre-existing constants for comparison.')\n",
+    "def boom(qm, const):\n",
+    "    qm_db = qm_dict[qm]\n",
+    "    this_karabo_da = qm_db[\"karabo_da\"]\n",
+    "    dconst = getattr(iCalibrationDB.Constants.AGIPD, const)()\n",
+    "\n",
+    "    # This should be used in case of running notebook\n",
+    "    # by a different method other than myMDC which already\n",
+    "    # sends CalCat info.\n",
+    "    # TODO: Set db_module to \"\" by default in the first cell\n",
+    "\n",
+    "    data, mdata = get_from_db(\n",
+    "        karabo_id, \n",
+    "        this_karabo_da,\n",
+    "        constant=dconst,\n",
+    "        condition=condition,\n",
+    "        empty_constant=None,\n",
+    "        cal_db_interface=cal_db_interface,\n",
+    "        creation_time=creation_time,\n",
+    "        verbosity=2,\n",
+    "        timeout=cal_db_timeout\n",
+    "    )\n",
+    "\n",
+    "    if mdata is None or data is None:\n",
+    "        timestamp = \"Not found\"\n",
+    "    else:\n",
+    "        timestamp = mdata.calibration_constant_version.begin_at.isoformat()\n",
+    "    \n",
+    "    return data, timestamp\n",
+    "\n",
+    "old_retrieval_pool = multiprocessing.Pool()\n",
+    "old_retrieval_res = old_retrieval_pool.starmap_async(boom, qm_x_const)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "old_retrieval_pool.close()"
    ]
   },
   {
@@ -926,6 +946,13 @@
     "    old_mdata.setdefault(qm, {})[const] = timestamp"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  },
   {
    "cell_type": "code",
    "execution_count": null,