QUALITY_OCCUPANCY
=================

Python object: ``phenotypic.schema._quality_occupancy.QUALITY_OCCUPANCY``

Measurement info for the grid-occupancy QC check.

Carries the per-group cell-occupancy counts compared by the occupancy
quality check: how many of a plate's expected grid cells are filled by
at least one colony (doublets collapse to one), how many cells the
metadata frame declared, and how many remain empty. A high ``Vacant``
count flags plates with many missing pin positions (failed spots,
dropouts) independent of any over-detection elsewhere on the plate.

.. list-table:: Category: **QC_Occupancy**
   :header-rows: 1

   * - Column label
     - Description
     - Type
   * - ``QC_Occupancy_Filled``
     - Distinct grid cells holding at least one colony (doublets count once).
     - :bdg-ref-secondary:`Quality <measurement-classification>`
   * - ``QC_Occupancy_Expected``
     - Expected grid-cell count from the metadata frame (rows per group).
     - :bdg-ref-secondary:`Quality <measurement-classification>`
   * - ``QC_Occupancy_Vacant``
     - Expected - Filled; empty/missing grid cells in the group.
     - :bdg-ref-secondary:`Quality <measurement-classification>`