code: def read(self):
          
          tic = datetime.now()
          with open(self.filename, "rb") as fp_:
              header = np.memmap(fp_, dtype=_HEADERTYPE, mode="r", shape=(1, ))
              data = np.memmap(fp_, dtype=_SCANTYPE, offset=22016, mode="r")
  
          logger.debug("Reading time %s", str(datetime.now() - tic))
  
          self._header = header
          self._data = data
docs: Read the data.