diff --git a/notebooks/AGIPD/Characterize_AGIPD_Gain_Darks_NBC.ipynb b/notebooks/AGIPD/Characterize_AGIPD_Gain_Darks_NBC.ipynb
index 209d38a49fbe09e332c0f393486ed9104e2c78b0..4ab9d52e0d2aed01ea113376eca36c9ea46f54c4 100644
--- a/notebooks/AGIPD/Characterize_AGIPD_Gain_Darks_NBC.ipynb
+++ b/notebooks/AGIPD/Characterize_AGIPD_Gain_Darks_NBC.ipynb
@@ -79,7 +79,7 @@
    "source": [
     "import os\n",
     "from collections import OrderedDict\n",
-    "from datetime import datetime, timedelta\n",
+    "from datetime import timedelta\n",
     "from typing import Tuple\n",
     "\n",
     "import dateutil.parser\n",
@@ -91,8 +91,6 @@
     "import yaml\n",
     "\n",
     "matplotlib.use('agg')\n",
-    "import itertools\n",
-    "import multiprocessing\n",
     "\n",
     "import iCalibrationDB\n",
     "import matplotlib.pyplot as plt\n",
@@ -690,7 +688,6 @@
     "\n",
     "    return data, timestamp, filepath, h5path\n",
     "\n",
-    "\n",
     "old_retrieval_pool = multiprocessing.Pool()\n",
     "old_retrieval_res = old_retrieval_pool.starmap_async(\n",
     "    retrieve_old_constant, qm_x_const\n",