find_event_pipeline() crashes with an index error (HDF5 file path specific)

[texadactyl]

Unfortunately, there have been a few incidents where the find_event/plot_event[_pipeline]*.py modules have made assumptions about directory names and HDF5 file names. Specifically, it was assumed that there would be a precise number of underbar (_) characters in the file name and no underbar characters in the preceding directory names.

Comments:

• While there are standards about Seti BL file naming conventions, they are sometimes "enhanced" with extra underbar separators between words.
• Directory names which precede file names in a POSIX full path name can have underbars. Of course!

The find_event_pipeline.py has been fixed and tested for the non-complex cadence cases.