The Tau might be able to analyze the tech better, if you release it to them.  They're pretty good at anything involving classical physics, plasma technology, AI, and C3, but are completely clueless when it comes to the warp or anything involving modern physics.  (The Tau don't believe that the speed of light is an absolute, and have never noticed relativistic time effects because all of their chronometers are set according to the monestaries of the etherials on the homeworlds)  Similarly, the Tau don't believe that the warp exists, or in psychic powers.  Daemons are believed to be teleporting raiders, and that this entire "warp" thing is just the reaction of a superstitious race to the rigors of interstellar travel.