By word quality we may be more generalized towards our target. but being a quality contious a "quality matix" should have;

1. logical parameterization of our parameters i.e. first we should confirm that is parameter "a" has logical connection with parameter "b"
2. Matrix should be result oriented. we can extract/deduce some logical results from each matrix
3. Every matrix should be complete in its domain it should not further dependant on other parameters other than selected
4. Every matrix should work in boundries of your requirements

I think if these are followed it can make any good matrix.