class_docstr: Handler for the regular band channels.
docstr: Replace fill values with NaN.
docstr_tok: ["Replace","fill","values","with","NaN","."]
code: def _mask_invalid(self, array, valid_min, valid_max):
      """Replace fill values with NaN."""
      return array.where((array >= valid_min) & (array <= valid_max))
  
imports: import logging
  import numpy
  import xarray
  from satpy.readers.hdf4_utils import from_sds
  from satpy.readers.hdfeos_base import HDFEOSBaseFileReader, HDFEOSGeoReader
label_desc: Use image node_id 6 for calling the HDFEOSBandReader obj's underlying member method code with example usage: obj._mask_invalid(array, valid_min, valid_max) and returns: array