def get_offsets(self):
return dict(<EOL>header_start=self._info['<STR_LIT>'],<EOL>data_start=self._info['<STR_LIT>'],<EOL>data_end=self._info['<STR_LIT>'],<EOL>)<EOL>
returns
-------
a dictionary with these entries

header_start:
    byte offset from beginning of the file to the start
    of the header
data_start:
    byte offset from beginning of the file to the start
    of the data section
data_end:
    byte offset from beginning of the file to the end
    of the data section

Note these are also in the information dictionary, which
you can access with get_info()