[otrs] ticket categories & analysis

Hi All, I have OTRS running nicely for dealing with our technical support requests. However I've been asked to find out about analysing the data. We want to be able to categorise the tickets, and then do some stats based on those categories. Something like: By failure - Hardware failure Software failure User error By product - Product 1 Product 2 Product 3 Product 4 Product 5 We want to be able to do this so that we can focus on what causes the most support requests. Does something like this exist in OTRS? Perhaps with an addon, or by using OTRS commercial services? Or do we need to use a different ticketing package to achieve this? Thanks in advance