class_docstr: Corrected Reflectance (crefl) modifier.
  
  Uses a python rewrite of the C CREFL code written for VIIRS and MODIS.
class_docstr_tok: ["Corrected","Reflectance","(","crefl",")","modifier",".","Uses","a","python","rewrite","of","the","C","CREFL","code","written","for","VIIRS","and","MODIS","."]
code: def _read_fill_value_from_hdf4(var, dtype):
      from pyhdf.error import HDF4Error
  
      try:
          return var.getfillvalue()
      except HDF4Error:
          return np.iinfo(dtype).min
  
file_path: satpy/satpy/modifiers/_crefl.py
imports: import logging
  import warnings
  import numpy
  from satpy.aux_download import DataDownloadMixin, retrieve
  from satpy.modifiers import ModifierBase
  from satpy.modifiers.angles import get_angles
label_desc: Use image node_id 9 for calling the ReflectanceCorrector obj's underlying member method code with example usage: obj._read_fill_value_from_hdf4(var, dtype) and returns: var, np