Update tutorials/analysis_1.ipynb
"cell_type": "markdown",
"metadata": {},
"source": [
- "# Analysis of H.E.S.S. DL3 data with Gammapy\n",
+ "# First analysis\n",
+ "\n",
+ "**TODO: Rewrite this notebook to be the \"first analysis\" one as described in PIG 18. Note that there is now a separate ``hess.ipynb`` that can be referenced from here, for a description of H.E.S.S. and the datasets. Also note that there is a follow-up `analysis2.ipynb`, this notebook can be short.**\n",
"\n",
"In September 2018 the [H.E.S.S.](https://www.mpi-hd.mpg.de/hfm/HESS) collaboration released a small subset of archival data in FITS format. This tutorial explains how to analyse this data with Gammapy. We will analyse four observation runs of the Crab nebula, which are part of the [H.E.S.S. first public test data release](https://www.mpi-hd.mpg.de/hfm/HESS/pages/dl3-dr1/). The data was release without corresponding background models. In [background_model.ipynb](background_model.ipynb) we show how to make a simple background model, which is also used in this tutorial. The background model is not perfect; it assumes radial symmetry and is in general derived from only a few observations, but still good enough for a reliable analysis > 1TeV.\n",
"\n",
