Extract the values from byte string.

def _parse_byte_data(self, byte_data):
        """Extract the values from byte string."""
        chunks = unpack('<iiiii', byte_data[:self.size])
        det_id, run, time_slice, time_stamp, ticks = chunks
        self.det_id = det_id
        self.run = run
        self.time_slice = time_slice
        self.time_stamp = time_stamp
        self.ticks = ticks