I wasn't able to figure out a way so I just picked a few at random. Is there an easy way to roll up like a heroku app or something that would check the health of only those torrents? That could be really useful to the libgen guys.
Most of the trackers seem to be down, so it's just getting data from tracker2.wasabii.com, and even that is pretty slow, so it'll take a while to fetch for all 1693 torrents.
I wrote a script that pings the tracker and keeps regenerating a static HTML file, so it'll keep updating itself, though not very fast.