diff --git a/notebooks/Jungfrau/Jungfrau_dark_analysis_all_gains_burst_mode_NBC.ipynb b/notebooks/Jungfrau/Jungfrau_dark_analysis_all_gains_burst_mode_NBC.ipynb
index 9ff6f54135eff37a0162f5aa960a59e371fed3c8..1d35a5d198c94b0b4b83f851bf2aea3b31863dd1 100644
--- a/notebooks/Jungfrau/Jungfrau_dark_analysis_all_gains_burst_mode_NBC.ipynb
+++ b/notebooks/Jungfrau/Jungfrau_dark_analysis_all_gains_burst_mode_NBC.ipynb
@@ -668,21 +668,6 @@
     "step_timer.print_summary()"
    ]
   },
-  {
-   "cell_type": "code",
-   "execution_count": 15,
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "jf_caldata = CalibrationData.from_condition(\n",
-    "    conditions,\n",
-    "    karabo_id,\n",
-    "    pdu_snapshot_at=creation_time,\n",
-    "    # TODO: use prior in time strategy\n",
-    "    event_at=creation_time-timedelta(seconds=60) if creation_time else None,\n",
-    ")"
-   ]
-  },
   {
    "cell_type": "code",
    "execution_count": null,
@@ -708,7 +693,7 @@
     "jf_caldata = CalibrationData.from_condition(\n",
     "    conditions,\n",
     "    karabo_id,\n",
-    "    event_at=creation_time-timedelta(seconds=60),\n",
+    "    event_at=creation_time-timedelta(seconds=60) if creation_time else None,\n",
     "    begin_at_strategy=\"prior\",\n",
     ")\n",
     "\n",