code: def remove_icon_names(inst, target=None):
      
    
      if target is None:
          lev = inst.tag
          if lev == 'level_2':
              lev = 'L2'
          elif lev == 'level_0':
              lev = 'L0'
          elif lev == 'level_0p':
              lev = 'L0P'
          elif lev == 'level_1.5':
              lev = 'L1-5'
          elif lev == 'level_1':
              lev = 'L1'
          else:
              raise ValueError('Uknown ICON data level')
          
          # get instrument code
          sid = inst.sat_id.lower()
          if sid == 'a':
              sid = 'IVM_A'
          elif sid == 'b':
              sid = 'IVM_B'
          else:
              raise ValueError('Unknown ICON satellite ID')
          prepend_str = '_'.join(('ICON', lev, sid)) + '_'
      else:
          prepend_str = target
  
      inst.data.rename(columns=lambda x: x.split(prepend_str)[-1], inplace=True)
      inst.meta.data.rename(index=lambda x: x.split(prepend_str)[-1], inplace=True)
      orig_keys = inst.meta.keys_nD()  
      for key in orig_keys:
          new_key = key.split(prepend_str)[-1]
          new_meta = inst.meta.pop(key)
          new_meta.data.rename(index=lambda x: x.split(prepend_str)[-1], inplace=True)
          inst.meta[new_key] = new_meta
          
      return
docs: Removes leading text on ICON project variable names
  
      Parameters
      ----------
      inst : pysat.Instrument
          ICON associated pysat.Instrument object
      target : str
          Leading string to remove. If none supplied,
          ICON project standards are used to identify and remove
          leading text
  
      Returns
      -------
      None
          Modifies Instrument object in place