def METHOD_NAME():
    # "Check various grid attributes"
    ds = data_dir_load(blastwave_cartesian_3D)
    grids = ds.index.grids
    assert ds.index.max_level == 2
    for g in grids:
        assert isinstance(g, AMRVACGrid)
        assert isinstance(g.LeftEdge, YTArray)
        assert isinstance(g.RightEdge, YTArray)
        assert isinstance(g.ActiveDimensions, np.ndarray)
        assert isinstance(g.Level, (np.int32, np.int64, int))