.. _sphx_glr_tutorials_analysis-1d:

Data analysis
=============

The following set of tutorials are devoted to data analysis, and grouped according to the specific covered use
cases in spectral analysis and flux fitting, image and cube analysis modelling and fitting, as well as
time-dependent analysis with light-curves.

1D Spectral
-----------


.. raw:: html

    <div class="sphx-glr-thumbnails">

.. thumbnail-parent-div-open

.. raw:: html

    <div class="sphx-glr-thumbcontainer" tooltip="Estimate the CTAO sensitivity for a point-like IRF at a fixed zenith angle and fixed offset.">

.. only:: html

  .. image:: /tutorials/analysis-1d/images/thumb/sphx_glr_cta_sensitivity_thumb.png
    :alt:

  :ref:`sphx_glr_tutorials_analysis-1d_cta_sensitivity.py`

.. raw:: html

      <div class="sphx-glr-thumbnail-title">Point source sensitivity</div>
    </div>


.. raw:: html

    <div class="sphx-glr-thumbcontainer" tooltip="Perform a full region based on-off spectral analysis and fit the resulting datasets.">

.. only:: html

  .. image:: /tutorials/analysis-1d/images/thumb/sphx_glr_spectral_analysis_thumb.png
    :alt:

  :ref:`sphx_glr_tutorials_analysis-1d_spectral_analysis.py`

.. raw:: html

      <div class="sphx-glr-thumbnail-title">Spectral analysis</div>
    </div>


.. raw:: html

    <div class="sphx-glr-thumbcontainer" tooltip="Introduction to 1D analysis using the Gammapy high level interface.">

.. only:: html

  .. image:: /tutorials/analysis-1d/images/thumb/sphx_glr_spectral_analysis_hli_thumb.png
    :alt:

  :ref:`sphx_glr_tutorials_analysis-1d_spectral_analysis_hli.py`

.. raw:: html

      <div class="sphx-glr-thumbnail-title">Spectral analysis with the HLI</div>
    </div>


.. raw:: html

    <div class="sphx-glr-thumbcontainer" tooltip="Perform a point like spectral analysis with energy dependent offset cut.">

.. only:: html

  .. image:: /tutorials/analysis-1d/images/thumb/sphx_glr_spectral_analysis_rad_max_thumb.png
    :alt:

  :ref:`sphx_glr_tutorials_analysis-1d_spectral_analysis_rad_max.py`

.. raw:: html

      <div class="sphx-glr-thumbnail-title">Spectral analysis with energy-dependent directional cuts</div>
    </div>


.. raw:: html

    <div class="sphx-glr-thumbcontainer" tooltip="Perform a spectral analysis of an extended source.">

.. only:: html

  .. image:: /tutorials/analysis-1d/images/thumb/sphx_glr_extended_source_spectral_analysis_thumb.png
    :alt:

  :ref:`sphx_glr_tutorials_analysis-1d_extended_source_spectral_analysis.py`

.. raw:: html

      <div class="sphx-glr-thumbnail-title">Spectral analysis of extended sources</div>
    </div>


.. raw:: html

    <div class="sphx-glr-thumbcontainer" tooltip="Simulate a number of spectral on-off observations of a source with a power-law spectral model using the CTA 1DC response and fit them with the assumed spectral model.">

.. only:: html

  .. image:: /tutorials/analysis-1d/images/thumb/sphx_glr_spectrum_simulation_thumb.png
    :alt:

  :ref:`sphx_glr_tutorials_analysis-1d_spectrum_simulation.py`

.. raw:: html

      <div class="sphx-glr-thumbnail-title">1D spectrum simulation</div>
    </div>


.. raw:: html

    <div class="sphx-glr-thumbcontainer" tooltip="Fit spectral models to combined Fermi-LAT and IACT flux points tables.">

.. only:: html

  .. image:: /tutorials/analysis-1d/images/thumb/sphx_glr_sed_fitting_thumb.png
    :alt:

  :ref:`sphx_glr_tutorials_analysis-1d_sed_fitting.py`

.. raw:: html

      <div class="sphx-glr-thumbnail-title">Flux point fitting</div>
    </div>


.. raw:: html

    <div class="sphx-glr-thumbcontainer" tooltip="Gamma rays emitted from extra-galactic objects, eg blazars, interact with the photons of the Extragalactic Background Light (EBL) through pair production and are attenuated, thus modifying the intrinsic spectrum.">

.. only:: html

  .. image:: /tutorials/analysis-1d/images/thumb/sphx_glr_ebl_thumb.png
    :alt:

  :ref:`sphx_glr_tutorials_analysis-1d_ebl.py`

.. raw:: html

      <div class="sphx-glr-thumbnail-title">Account for spectral absorption due to the EBL</div>
    </div>


.. thumbnail-parent-div-close

.. raw:: html

    </div>


.. toctree::
   :hidden:

   /tutorials/analysis-1d/cta_sensitivity
   /tutorials/analysis-1d/spectral_analysis
   /tutorials/analysis-1d/spectral_analysis_hli
   /tutorials/analysis-1d/spectral_analysis_rad_max
   /tutorials/analysis-1d/extended_source_spectral_analysis
   /tutorials/analysis-1d/spectrum_simulation
   /tutorials/analysis-1d/sed_fitting
   /tutorials/analysis-1d/ebl