The CARMA Data Archive will typically re-fill data from its basic constituents (the visbrick and the monitor points) whenever the data is requested. This could thus mean that the data used by the quality script might be different from that obtained from the Data Archive.
You can save a checksum of your data and/or use the version of the data that is stored inside the visibility data. That way you will be able to decide if your data reduction will have to be redone.
% uvlist vis=cx012.SS433.2006sep07.1.miriad options=var,full | grep version UVLIST: version 4-may-06 version :0.1.2 % mdsum cx012.SS433.2006sep07.1.miriad 518864276e75f081e68156fbf3ac12a3 cx012.SS433.2006sep07.1.miriad.tar.gz
Appendix E lists the various problems that could have occured with your data at different stages of the commissioning of CARMA in 2006/7. Especially if you are re-calibrating your data after some new insight, it makes sense to check if you should re-fetch the data.