class_docstr: File handler for DSCOVR EPIC L1b data.
code: def _mask_infinite(band):
      band.data = da.where(np.isfinite(band.data), band.data, np.nan)
      return band
  
file_path: satpy/satpy/readers/epic_l1b_h5.py
imports: import logging
  from datetime import datetime
  import dask.array
  import numpy
  from satpy.readers.hdf5_utils import HDF5FileHandler
label_desc: Use image node_id 4 for calling the DscovrEpicL1BH5FileHandler obj's underlying member method code with example usage: obj._mask_infinite(band) and returns: band