A few months back, we introduced custom queries as a mechanism to run queries against the analytics data sent to us by the application. With crash analytics and custom queries, you now have the power to run queries on the data attached to the crash events. You are now able to query properties like username or any meta data attached to the crash event.
Troubleshooting crashes reported by a user
If one of your application users is reporting an application crash, then with the help of the custom queries interface, you can find out the most recent crash experienced by that user and gather more information about the reported crash.
In the Dashboard, you browse to the Application ( say tabCrashes as an example)