Autoscale the minimum values in the fid drift plots

Autoscaling in Y should allow us to see the outliers in the direction of interest.

This set of changes also includes rejection of 4 early obsids that produced large (500 -> 1000) arcsec outliers in the plots.  I assume that these are corrupt in the database (labeled with the incorrect fid id or the like) but have not had a chance to investigate.  I figured it made more sense to just reject the data from these specifc obsids than to do any limit filtering on the fid position data.