Sentry provides you with a generic interface to view and interact with your error logs. By default, it will catch any exception thrown by Django and store it in a database. With this it allows you to interact and view near real-time information to discover issues and more easily trace them in your application.
As of 1.13.0 the built-in client has been deprecated. A new standalone project (which doesn't require Django) called Raven will replace it. If you're just getting started with Sentry, or you want to use a client in a non-Django application, we suggest taking a look at Raven.
Docs: http://readthedocs.org/docs/sentry/en/latest/index.html