ensure pipeline steps have access to necessary reference files

notebooks/NIRCam/NIRCam_WFSS_Box_extraction/BoxExtraction_using_Grismconf_CRDS.ipynb

@@ -69,6 +69,7 @@
     "import requests\n",
     "from scipy.stats import sigmaclip\n",
     "\n",
+    "from crds import client\n",
     "import grismconf\n",
     "from jwst.assign_wcs import AssignWcsStep\n",
     "from jwst.flatfield import FlatFieldStep\n",
@@ -198,7 +199,7 @@
    "id": "41068262-9a54-46c5-a9d2-ca2217ad1fee",
    "metadata": {},
    "source": [
-    "## Download Data"
+    "## Download Data and Ensure CRDS Configuration"
    ]
   },
   {
@@ -223,6 +224,28 @@
     "get_jwst_file(wfss_file)"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "id": "faa27c94",
+   "metadata": {},
+   "source": [
+    "If CRDS is not configured, set the CRDS server URL and define a local cache path \n",
+    "to ensure the pipeline steps can access reference files as needed."
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "af7a4057",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "if os.environ.get(\"CRDS_PATH\") is None:\n",
+    "    client.set_crds_server('https://jwst-crds.stsci.edu')\n",
+    "    os.environ[\"CRDS_SERVER_URL\"] = \"https://jwst-crds.stsci.edu\"\n",
+    "    os.environ[\"CRDS_PATH\"] = \"\""
+   ]
+  },
   {
    "cell_type": "markdown",
    "id": "ab5f3c78-258f-49c4-99c4-87e26f0972cf",

notebooks/NIRCam/NIRCam_WFSS_Box_extraction/requirements.txt

@@ -5,4 +5,5 @@ jwst >= 1.16.0
 matplotlib >= 3.9.2
 numpy == 1.26.4
 requests >= 2.32.3
-scipy >= 1.14.1
+scipy >= 1.14.1
+crds >= 12.0.4