At 1 minute, say, instead of 50 sec, there are 24*60=1440 traces in a 24-hr day. Having all of those on one figure is going to just not be possible; there aren't enough pixels on a monitor of any size to show them all.
You can probably do from a couple to several hours at a time before just run out of real estate; will depend on just how dynamic the traces are and what level of resolution you'll need to be of any value at all.
For visualization, might want to look at waterfall to put a number on a given axes with some spacing between them rather than just straight traces--experimentation with some of the data will be the only way to really know what "works" and what doesn't...I presume there have been other papers published in the subject area, looking at some of their data presentation methods may help provide ideas as well.
As a note, I'd think this baseline shouldn't be just blindly recomputed every N seconds independently, but should at least be smooth function with time itself as well. Smoothing splines could perhaps be useful here.
It'll be easy enough to bring in sections of the data at a time, the challenge will be in just how much you can actually realistically do something with simultaneously although it'll be relatively simple I'd think to do the calculations, being able to display them will undoubtedly be a challenge.
Of course, when you have this much data, just how much you can physically look at is limited as well; you'll have to develop procedures to automate retrieving whatever measures there are in it that are of interest.
