.. _sphx_glr_auto_examples_data_quality:

Data quality
____________

Examples on how to explore the data quality of time series.



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


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    <div class="sphx-glr-thumbcontainer" tooltip="Example of point outlier removal with polynomial regression and Studentized residuals. We gener...">

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  .. image:: /auto_examples/data_quality/images/thumb/sphx_glr_plot_extreme_outlier_thumb.png
    :alt:

  :ref:`sphx_glr_auto_examples_data_quality_plot_extreme_outlier.py`

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      <div class="sphx-glr-thumbnail-title">Extreme Outliers Removal</div>
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    <div class="sphx-glr-thumbcontainer" tooltip="Example of algorithm that indicates decreasing values in time series data. This algorithm is ap...">

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  .. image:: /auto_examples/data_quality/images/thumb/sphx_glr_plot_value_decrease_check_thumb.png
    :alt:

  :ref:`sphx_glr_auto_examples_data_quality_plot_value_decrease_check.py`

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      <div class="sphx-glr-thumbnail-title">Checking for decreasing values in a timeseries</div>
    </div>


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    <div class="sphx-glr-thumbcontainer" tooltip="Example of visualizing rolling standard deviation of time delta of time series data to identify...">

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  .. image:: /auto_examples/data_quality/images/thumb/sphx_glr_plot_rolling_stddev_timedelta_thumb.png
    :alt:

  :ref:`sphx_glr_auto_examples_data_quality_plot_rolling_stddev_timedelta.py`

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      <div class="sphx-glr-thumbnail-title">Rolling standard deviation of data points time delta</div>
    </div>


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    <div class="sphx-glr-thumbcontainer" tooltip="It is important to know how complete a time series is. In this example, the function qualifies ...">

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  .. image:: /auto_examples/data_quality/images/thumb/sphx_glr_plot_completeness_thumb.png
    :alt:

  :ref:`sphx_glr_auto_examples_data_quality_plot_completeness.py`

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      <div class="sphx-glr-thumbnail-title">Completeness score of time series</div>
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    <div class="sphx-glr-thumbcontainer" tooltip="Example of visualizing breach of threshold in hour count in a time series representing running ...">

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  .. image:: /auto_examples/data_quality/images/thumb/sphx_glr_plot_datapoint_diff_thumb.png
    :alt:

  :ref:`sphx_glr_auto_examples_data_quality_plot_datapoint_diff.py`

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      <div class="sphx-glr-thumbnail-title">Threshold breach check for difference between two data points over a period of time</div>
    </div>


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    <div class="sphx-glr-thumbcontainer" tooltip="Detecting density of data points in a time series is important for finding out if the expected ...">

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  .. image:: /auto_examples/data_quality/images/thumb/sphx_glr_plot_low_density_identification_thumb.png
    :alt:

  :ref:`sphx_glr_auto_examples_data_quality_plot_low_density_identification.py`

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      <div class="sphx-glr-thumbnail-title">Identifying low density periods</div>
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    <div class="sphx-glr-thumbcontainer" tooltip="Identifying gaps in data is critical when working with time series. Data gaps can be for instan...">

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  .. image:: /auto_examples/data_quality/images/thumb/sphx_glr_plot_gaps_identification_thumb.png
    :alt:

  :ref:`sphx_glr_auto_examples_data_quality_plot_gaps_identification.py`

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      <div class="sphx-glr-thumbnail-title">Identifying gaps in time series</div>
    </div>


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    <div class="sphx-glr-thumbcontainer" tooltip="Introduction ------------ The out_of_range function uses Savitzky-Golay smoothing (SG) - sg to ...">

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  .. image:: /auto_examples/data_quality/images/thumb/sphx_glr_plot_out_of_range_thumb.png
    :alt:

  :ref:`sphx_glr_auto_examples_data_quality_plot_out_of_range.py`

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      <div class="sphx-glr-thumbnail-title">Detect out of range outliers in sensor data</div>
    </div>


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    </div>


.. toctree::
   :hidden:

   /auto_examples/data_quality/plot_extreme_outlier
   /auto_examples/data_quality/plot_value_decrease_check
   /auto_examples/data_quality/plot_rolling_stddev_timedelta
   /auto_examples/data_quality/plot_completeness
   /auto_examples/data_quality/plot_datapoint_diff
   /auto_examples/data_quality/plot_low_density_identification
   /auto_examples/data_quality/plot_gaps_identification
   /auto_examples/data_quality/plot_out_of_range