OCHA routinely evaluates the quality and availability of Common Operational Databases. The results of this analysis can be found on the COD Portal.
The Portal documents:
The quality of administrative boundary (COD-AB) layers and population statistics (COD-PS) tables, and
Their availability on HDX and for COD-AB as an ITOS geoservices. The portal is generally refreshed after any COD-AB or COD-PS is added or updated.
The portal has the following pages:
Country information - containing a matrix of all countries and general COD-AB and COD-PS characteristics including evaluations
COD metadata for any country highlighted by the user in the Country information page including information such as evaluations for each administrative level