.. _MERBksMosaic:
  
Background-subtracted Mosaic Product
------------------------------------
  
Data product name
=================
.. DataProductNameStart
   
DpdMerBksMosaic
   
.. DataProductNameEnd
   
Data product custodian
======================
.. DataProductCustodianStart
   
MER
   
.. DataProductCustodianEnd
   
Data model tag
==============
.. DataModelTagStart
   
9.0.2
   
.. DataModelTagEnd
   
Name of the Schema file
=======================
.. NameSchemaStart
   
euc-test-mer-BksMosaic.xsd
   
.. NameSchemaEnd
   
Schema documentation tag
========================
.. SchemaDocTagStart
   
:emphasis:`Documentation for data product element DpdMerBksMosaic:`
    
MER mosaic to which a process of background subtraction has been applied. 
This product is an output from the MER background subtraction module.
   
.. SchemaDocTagEnd
   
Data product elements
=====================
.. DataProductElementsStart
   
Header of type: sys:genericHeader

Data of type: mer:merBksMosaic

QualityFlags of type: dqc:sqfDpdMerBksMosaic

Parameters of type: ppr:genericKeyValueParameters

   
.. DataProductElementsEnd
   
Processing Element(s) creating/using the data product
=====================================================
.. PECreatorStart
 
Creators:

* MER_Background
  
Consumers:
 
* MER_Detection 
* MER_Kernel
* MER_PsfMosaic
* MER_Morphology
* MER_Photometry
 
.. PECreatorEnd
   
Processing function using the data product
==========================================
.. PFUsingStart

MER
   
.. PFUsingEnd
   
Detailed description of the data product
========================================
.. DetailedDescStart

This product is the result of applying the MER Background Subtraction 
:term:`Processing Element` to a MER :ref:`MERMosaic`.

The main elements inside this product are:

* **Instrument**: The instrument name (VIS, NIR, DECAM, LSSTCAM) and the
  telescope name (Euclid, NOAO, LSST).
* **Filter**: The filter name (e.g., VIS, NIR_Y, NIR_J, NIR_H, DECAM_g, 
  LSST_u).
* **WCS**: The mosaic astrometric parameters with linear (e.g., CTYPE1, CRVAL2, 
  CRPIX1, CD1_1) and, optionally, non linear terms (PV1_0, PV2_0, ...).
* **ZeroPoint**: The photometric reference zero point in magnitude units.
* **ImgSpatialFootprint**: The mosaic spatial footprint.
* **Masks** (optional): Euclid bit masks present in the flag image data set.
* **TileIndex**: The MER tile index.
* **PatchIdList** (optional): The sky patch ids associated to the product.
* **ObservationIdList**: List of unique IDs identifying the Euclid observations 
  the were used to generate the product.
* **CalblockIdList** (optional): The calibration block ids associated to the
  product.
* **ProcessingMode**: The MER pipeline processing mode (WIDE or DEEP) used to
  generate the product.
* **DataStorage**: Element that links to a FITS file containing the mosaic 
  signal data set.
* **RmsStorage**: Element that links to a FITS file containing the mosaic rms
  data set.
* **FlagStorage**: Element that links to a FITS file containing the mosaic flag
  data set.
* **PsfModelStorage**: Element that links to a FITS file containing the mosaic
  PSF model.
* **BackgroundStorage**: Element that links to a FITS file containing the
  subtracted background model.
* **FilterTransmissionStorage** (optional): Element that links to a FITS file
  containing the filter transmission data set.
* **QualityParams**: The mosaic image quality parameters.
* **BackgroundQualityParams**: The mosaic background quality parameters.
* **ProcessingSteps** (optional): Information about the processing steps 
  associated with the background subtraction process.

.. DetailedDescEnd