The Aggregate Failure Rate (in Scope) is the cumulative failure rate associated with a specified subset of the given hierarchical design. Represented as the number of failures per million hours, this metric is based on the adjusted failure rates associated with all used functions that fall within the Diagnostic Scope of the specified Diagnostic studies. (Note: this metric does not appear when the scope is set to <Entire Design>).
Note: This metric is calculated using data that is available prior to diagnostic processing and therefore does not take into account any subsets that can only be elaborated by the diagnostic engine (such as Failure Severity-Based Subsets). This differs from the Aggregate Failure Rate metric in the Detection Order Report, which takes into consideration all subsets, including those that require diagnostic processing.
