class_docstr: Test VISSR file handler.
class_docstr_tok: ["Test","VISSR","file","handler","."]
docstr: Get IR1 image data.
docstr_tok: ["Get","IR1","image","data","."]
code: def image_data_ir1(self):
      """Get IR1 image data."""
      image_data = np.zeros(2, fmt.IMAGE_DATA_BLOCK_IR)
      image_data["LCW"]["line_number"] = [686, 2089]
      image_data["LCW"]["scan_time"] = [50000, 50000]
      image_data["LCW"]["west_side_earth_edge"] = [0, 0]
      image_data["LCW"]["east_side_earth_edge"] = [1, 1]
      image_data["image_data"] = [[0, 1], [2, 3]]
      return image_data
  
imports: import datetime
  import gzip
  import fsspec
  import numpy
  import pytest
  import xarray
  from pyresample.geometry import AreaDefinition
  import satpy.tests.reader_tests.gms.test_gms5_vissr_data
  from satpy.readers import FSFile
  from satpy.tests.reader_tests.utils import get_jit_methods, skip_numba_unstable_if_missing
  from satpy.tests.utils import make_dataid
label_desc: Use image node_id 25 for calling the TestFileHandler obj's underlying member method code with example usage: obj.image_data_ir1() and returns: image_data