diff --git a/pds4_utils_example.ipynb b/pds4_utils_example.ipynb
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+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# pds4_utils example\n",
+    "\n",
+    "This is a work-in-progress notebook demonstrating how to use the psd4_utils module."
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 1,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "from pds4_utils import pds4_utils"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "\u001b[0;31mSignature:\u001b[0m \u001b[0mpds4_utils\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mindex_products\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mdirectory\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0;34m'.'\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mpattern\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0;34m'*.xml'\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
+       "\u001b[0;31mDocstring:\u001b[0m\n",
+       "Accepts a directory containing PDS4 products, indexes the labels and returns a \n",
+       "Pandas data-frame containng meta-data for each product.\n",
+       "\u001b[0;31mFile:\u001b[0m      ~/Dropbox/work/bepi/software/pds4_utils/pds4_utils/pds4_utils.py\n",
+       "\u001b[0;31mType:\u001b[0m      function\n"
+      ]
+     },
+     "metadata": {},
+     "output_type": "display_data"
+    }
+   ],
+   "source": [
+    "pds4_utils.index_products?"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 3,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "INFO 2020-05-25 17:36:02 (pds4_utils.pds4_utils): 406 PDS4 labels indexed\n"
+     ]
+    }
+   ],
+   "source": [
+    "idx = pds4_utils.index_products(directory='/home/mbentley/Desktop/bc_mtm_mcam/')"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 4,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/html": [
+       "<div>\n",
+       "<style scoped>\n",
+       "    .dataframe tbody tr th:only-of-type {\n",
+       "        vertical-align: middle;\n",
+       "    }\n",
+       "\n",
+       "    .dataframe tbody tr th {\n",
+       "        vertical-align: top;\n",
+       "    }\n",
+       "\n",
+       "    .dataframe thead th {\n",
+       "        text-align: right;\n",
+       "    }\n",
+       "</style>\n",
+       "<table border=\"1\" class=\"dataframe\">\n",
+       "  <thead>\n",
+       "    <tr style=\"text-align: right;\">\n",
+       "      <th></th>\n",
+       "      <th>filename</th>\n",
+       "      <th>product_type</th>\n",
+       "      <th>lid</th>\n",
+       "      <th>vid</th>\n",
+       "      <th>start_time</th>\n",
+       "      <th>stop_time</th>\n",
+       "      <th>bundle</th>\n",
+       "      <th>collection</th>\n",
+       "      <th>product_id</th>\n",
+       "    </tr>\n",
+       "  </thead>\n",
+       "  <tbody>\n",
+       "    <tr>\n",
+       "      <th>0</th>\n",
+       "      <td>/home/mbentley/Desktop/bc_mtm_mcam/browse/crui...</td>\n",
+       "      <td>Product_Browse</td>\n",
+       "      <td>urn:esa:psa:bc_mtm_mcam:browse:cam_raw_sc_cam1...</td>\n",
+       "      <td>1.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>bc_mtm_mcam</td>\n",
+       "      <td>browse</td>\n",
+       "      <td>cam_raw_sc_cam1_browse_20200515t024802_00_f__t...</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>1</th>\n",
+       "      <td>/home/mbentley/Desktop/bc_mtm_mcam/browse/crui...</td>\n",
+       "      <td>Product_Browse</td>\n",
+       "      <td>urn:esa:psa:bc_mtm_mcam:browse:cam_raw_sc_cam1...</td>\n",
+       "      <td>1.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>bc_mtm_mcam</td>\n",
+       "      <td>browse</td>\n",
+       "      <td>cam_raw_sc_cam1_browse_20200515t025757_00_f__t...</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>2</th>\n",
+       "      <td>/home/mbentley/Desktop/bc_mtm_mcam/browse/crui...</td>\n",
+       "      <td>Product_Browse</td>\n",
+       "      <td>urn:esa:psa:bc_mtm_mcam:browse:cam_raw_sc_cam1...</td>\n",
+       "      <td>1.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>bc_mtm_mcam</td>\n",
+       "      <td>browse</td>\n",
+       "      <td>cam_raw_sc_cam1_browse_20200515t030752_00_f__t...</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>3</th>\n",
+       "      <td>/home/mbentley/Desktop/bc_mtm_mcam/browse/crui...</td>\n",
+       "      <td>Product_Browse</td>\n",
+       "      <td>urn:esa:psa:bc_mtm_mcam:browse:cam_raw_sc_cam1...</td>\n",
+       "      <td>1.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>bc_mtm_mcam</td>\n",
+       "      <td>browse</td>\n",
+       "      <td>cam_raw_sc_cam1_browse_20200515t031747_00_f__t...</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>4</th>\n",
+       "      <td>/home/mbentley/Desktop/bc_mtm_mcam/browse/crui...</td>\n",
+       "      <td>Product_Browse</td>\n",
+       "      <td>urn:esa:psa:bc_mtm_mcam:browse:cam_raw_sc_cam1...</td>\n",
+       "      <td>1.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>bc_mtm_mcam</td>\n",
+       "      <td>browse</td>\n",
+       "      <td>cam_raw_sc_cam1_browse_20200515t032742_00_f__t...</td>\n",
+       "    </tr>\n",
+       "  </tbody>\n",
+       "</table>\n",
+       "</div>"
+      ],
+      "text/plain": [
+       "                                            filename    product_type  \\\n",
+       "0  /home/mbentley/Desktop/bc_mtm_mcam/browse/crui...  Product_Browse   \n",
+       "1  /home/mbentley/Desktop/bc_mtm_mcam/browse/crui...  Product_Browse   \n",
+       "2  /home/mbentley/Desktop/bc_mtm_mcam/browse/crui...  Product_Browse   \n",
+       "3  /home/mbentley/Desktop/bc_mtm_mcam/browse/crui...  Product_Browse   \n",
+       "4  /home/mbentley/Desktop/bc_mtm_mcam/browse/crui...  Product_Browse   \n",
+       "\n",
+       "                                                 lid  vid start_time  \\\n",
+       "0  urn:esa:psa:bc_mtm_mcam:browse:cam_raw_sc_cam1...  1.0        NaT   \n",
+       "1  urn:esa:psa:bc_mtm_mcam:browse:cam_raw_sc_cam1...  1.0        NaT   \n",
+       "2  urn:esa:psa:bc_mtm_mcam:browse:cam_raw_sc_cam1...  1.0        NaT   \n",
+       "3  urn:esa:psa:bc_mtm_mcam:browse:cam_raw_sc_cam1...  1.0        NaT   \n",
+       "4  urn:esa:psa:bc_mtm_mcam:browse:cam_raw_sc_cam1...  1.0        NaT   \n",
+       "\n",
+       "  stop_time       bundle collection  \\\n",
+       "0       NaT  bc_mtm_mcam     browse   \n",
+       "1       NaT  bc_mtm_mcam     browse   \n",
+       "2       NaT  bc_mtm_mcam     browse   \n",
+       "3       NaT  bc_mtm_mcam     browse   \n",
+       "4       NaT  bc_mtm_mcam     browse   \n",
+       "\n",
+       "                                          product_id  \n",
+       "0  cam_raw_sc_cam1_browse_20200515t024802_00_f__t...  \n",
+       "1  cam_raw_sc_cam1_browse_20200515t025757_00_f__t...  \n",
+       "2  cam_raw_sc_cam1_browse_20200515t030752_00_f__t...  \n",
+       "3  cam_raw_sc_cam1_browse_20200515t031747_00_f__t...  \n",
+       "4  cam_raw_sc_cam1_browse_20200515t032742_00_f__t...  "
+      ]
+     },
+     "execution_count": 4,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "idx.head()"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 6,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/html": [
+       "<div>\n",
+       "<style scoped>\n",
+       "    .dataframe tbody tr th:only-of-type {\n",
+       "        vertical-align: middle;\n",
+       "    }\n",
+       "\n",
+       "    .dataframe tbody tr th {\n",
+       "        vertical-align: top;\n",
+       "    }\n",
+       "\n",
+       "    .dataframe thead th {\n",
+       "        text-align: right;\n",
+       "    }\n",
+       "</style>\n",
+       "<table border=\"1\" class=\"dataframe\">\n",
+       "  <thead>\n",
+       "    <tr style=\"text-align: right;\">\n",
+       "      <th></th>\n",
+       "      <th>filename</th>\n",
+       "      <th>product_type</th>\n",
+       "      <th>lid</th>\n",
+       "      <th>vid</th>\n",
+       "      <th>start_time</th>\n",
+       "      <th>stop_time</th>\n",
+       "      <th>bundle</th>\n",
+       "      <th>collection</th>\n",
+       "      <th>product_id</th>\n",
+       "    </tr>\n",
+       "  </thead>\n",
+       "  <tbody>\n",
+       "    <tr>\n",
+       "      <th>204</th>\n",
+       "      <td>/home/mbentley/Desktop/bc_mtm_mcam/data_raw/cr...</td>\n",
+       "      <td>Product_Observational</td>\n",
+       "      <td>urn:esa:psa:bc_mtm_mcam:data_raw:cam_raw_sc_ca...</td>\n",
+       "      <td>1.0</td>\n",
+       "      <td>2020-05-15 02:48:02.940</td>\n",
+       "      <td>2020-05-15 02:48:02.960</td>\n",
+       "      <td>bc_mtm_mcam</td>\n",
+       "      <td>data_raw</td>\n",
+       "      <td>cam_raw_sc_cam1_image_20200515t024802_00_f__t0020</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>205</th>\n",
+       "      <td>/home/mbentley/Desktop/bc_mtm_mcam/data_raw/cr...</td>\n",
+       "      <td>Product_Observational</td>\n",
+       "      <td>urn:esa:psa:bc_mtm_mcam:data_raw:cam_raw_sc_ca...</td>\n",
+       "      <td>1.0</td>\n",
+       "      <td>2020-05-15 02:57:57.930</td>\n",
+       "      <td>2020-05-15 02:57:57.950</td>\n",
+       "      <td>bc_mtm_mcam</td>\n",
+       "      <td>data_raw</td>\n",
+       "      <td>cam_raw_sc_cam1_image_20200515t025757_00_f__t0020</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>206</th>\n",
+       "      <td>/home/mbentley/Desktop/bc_mtm_mcam/data_raw/cr...</td>\n",
+       "      <td>Product_Observational</td>\n",
+       "      <td>urn:esa:psa:bc_mtm_mcam:data_raw:cam_raw_sc_ca...</td>\n",
+       "      <td>1.0</td>\n",
+       "      <td>2020-05-15 03:07:52.930</td>\n",
+       "      <td>2020-05-15 03:07:52.950</td>\n",
+       "      <td>bc_mtm_mcam</td>\n",
+       "      <td>data_raw</td>\n",
+       "      <td>cam_raw_sc_cam1_image_20200515t030752_00_f__t0020</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>207</th>\n",
+       "      <td>/home/mbentley/Desktop/bc_mtm_mcam/data_raw/cr...</td>\n",
+       "      <td>Product_Observational</td>\n",
+       "      <td>urn:esa:psa:bc_mtm_mcam:data_raw:cam_raw_sc_ca...</td>\n",
+       "      <td>1.0</td>\n",
+       "      <td>2020-05-15 03:17:47.940</td>\n",
+       "      <td>2020-05-15 03:17:47.960</td>\n",
+       "      <td>bc_mtm_mcam</td>\n",
+       "      <td>data_raw</td>\n",
+       "      <td>cam_raw_sc_cam1_image_20200515t031747_00_f__t0020</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>208</th>\n",
+       "      <td>/home/mbentley/Desktop/bc_mtm_mcam/data_raw/cr...</td>\n",
+       "      <td>Product_Observational</td>\n",
+       "      <td>urn:esa:psa:bc_mtm_mcam:data_raw:cam_raw_sc_ca...</td>\n",
+       "      <td>1.0</td>\n",
+       "      <td>2020-05-15 03:27:42.940</td>\n",
+       "      <td>2020-05-15 03:27:42.960</td>\n",
+       "      <td>bc_mtm_mcam</td>\n",
+       "      <td>data_raw</td>\n",
+       "      <td>cam_raw_sc_cam1_image_20200515t032742_00_f__t0020</td>\n",
+       "    </tr>\n",
+       "  </tbody>\n",
+       "</table>\n",
+       "</div>"
+      ],
+      "text/plain": [
+       "                                              filename           product_type  \\\n",
+       "204  /home/mbentley/Desktop/bc_mtm_mcam/data_raw/cr...  Product_Observational   \n",
+       "205  /home/mbentley/Desktop/bc_mtm_mcam/data_raw/cr...  Product_Observational   \n",
+       "206  /home/mbentley/Desktop/bc_mtm_mcam/data_raw/cr...  Product_Observational   \n",
+       "207  /home/mbentley/Desktop/bc_mtm_mcam/data_raw/cr...  Product_Observational   \n",
+       "208  /home/mbentley/Desktop/bc_mtm_mcam/data_raw/cr...  Product_Observational   \n",
+       "\n",
+       "                                                   lid  vid  \\\n",
+       "204  urn:esa:psa:bc_mtm_mcam:data_raw:cam_raw_sc_ca...  1.0   \n",
+       "205  urn:esa:psa:bc_mtm_mcam:data_raw:cam_raw_sc_ca...  1.0   \n",
+       "206  urn:esa:psa:bc_mtm_mcam:data_raw:cam_raw_sc_ca...  1.0   \n",
+       "207  urn:esa:psa:bc_mtm_mcam:data_raw:cam_raw_sc_ca...  1.0   \n",
+       "208  urn:esa:psa:bc_mtm_mcam:data_raw:cam_raw_sc_ca...  1.0   \n",
+       "\n",
+       "                 start_time               stop_time       bundle collection  \\\n",
+       "204 2020-05-15 02:48:02.940 2020-05-15 02:48:02.960  bc_mtm_mcam   data_raw   \n",
+       "205 2020-05-15 02:57:57.930 2020-05-15 02:57:57.950  bc_mtm_mcam   data_raw   \n",
+       "206 2020-05-15 03:07:52.930 2020-05-15 03:07:52.950  bc_mtm_mcam   data_raw   \n",
+       "207 2020-05-15 03:17:47.940 2020-05-15 03:17:47.960  bc_mtm_mcam   data_raw   \n",
+       "208 2020-05-15 03:27:42.940 2020-05-15 03:27:42.960  bc_mtm_mcam   data_raw   \n",
+       "\n",
+       "                                            product_id  \n",
+       "204  cam_raw_sc_cam1_image_20200515t024802_00_f__t0020  \n",
+       "205  cam_raw_sc_cam1_image_20200515t025757_00_f__t0020  \n",
+       "206  cam_raw_sc_cam1_image_20200515t030752_00_f__t0020  \n",
+       "207  cam_raw_sc_cam1_image_20200515t031747_00_f__t0020  \n",
+       "208  cam_raw_sc_cam1_image_20200515t032742_00_f__t0020  "
+      ]
+     },
+     "execution_count": 6,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "idx[idx.product_type=='Product_Observational'].head()"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "bepi",
+   "language": "python",
+   "name": "bepi"
+  },
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+}