Hopefully this isn't too subjective. I am curious to know what measures to use to assess the quality of a given software release. The measures would need to be applied to multiple different projects within the organisation and so the measure have be reasonably generic. 

Ideally I would like to  use the measures to help move release deadlines when necessary as well as to push back to developers when I feel enough unit testing is not being done. 

So far I have thought of the following that could be potentially measured:

- Defect rate per hour of test time. 
- Defects per hour of dev time.
- % of defects that are coding errors. 
- % of functionality with no outstanding defects (assuming the testing cycle is complete).