The Veto Evaluation Tool (VET) measures the efficiency, deadtime, and use percentage of a data quality (DQ) flag against a set of events. A DQ flag indicates times when a specific problem is known to be occurring. A DQ veto is a time that is removed from the search and a flag is applied. Efficiency is the fraction of the background events that were vetoes. Deadtime is the fraction of the analysis time that was removed. Use percentage is the fraction of auxiliary channel glitches used to veto. The ratio of efficiency over deadtime indicates the quality of the data versus how much time was removed. It is better to have as little time as possible removed from vetoes, so a useful veto results in a higher ratio of efficiency to deadtime (around eight to ten). VET works on a single detector and a single event trigger generator (ETG) at a time. VET can be run for a flag to determine which has the best efficiency/deadtime ratio and to remove the majority of the poor data. VET is run against the cWB results with both Hierarchical Veto (Hveto) and Used Percentage Veto (UPV) to identify unique glitch features. The final VET page provides tabs that display results for the entire day of Hveto and UPV as well as individual channel winners for that day.