def METHOD_NAME(self, num_scans, num_cols):
    data = {
        'Data/resolution_1km/Solar_Zenith_Angle':
            xr.DataArray(
                da.ones((num_scans*4, num_cols*4), chunks=1024,
                        dtype=np.uint16),
                attrs={
                    'scale': 0.01, 'offset': 0., 'fill_value': -999.
                },
                dims=('x', 'y')),
        'Geolocation/resolution_1km/Latitude':
            xr.DataArray(
                da.ones((num_scans*4, num_cols*4), chunks=1024,
                        dtype=np.uint16),
                attrs={
                    'scale': 0.01, 'offset': 0., 'fill_value': -999.
                },
                dims=('x', 'y')),
        'Geolocation/resolution_1km/Longitude':
            xr.DataArray(
                da.ones((num_scans*4, num_cols*4), chunks=1024,
                        dtype=np.uint16),
                attrs={
                    'scale': 0.01, 'offset': 0., 'fill_value': -999.
                },
                dims=('x', 'y')),
        'Data/resolution_1km/Radiance_01':
            xr.DataArray(
                da.ones((num_scans*4, num_cols*4), chunks=1024,
                        dtype=np.uint16),
                attrs={
                    'scale': 0.01, 'offset': 0., 'fill_value': -999., 'F_solar_constant': SOLCONST
                },
                dims=('x', 'y')),
        'Data/resolution_4km/Solar_Zenith_Angle':
            xr.DataArray(
                da.ones((num_scans, num_cols), chunks=1024,
                        dtype=np.uint16),
                attrs={
                    'scale': 0.01, 'offset': 0., 'fill_value': -999.
                },
                dims=('x', 'y')),
        'Geolocation/resolution_4km/Latitude':
            xr.DataArray(
                da.ones((num_scans, num_cols), chunks=1024,
                        dtype=np.uint16),
                attrs={
                    'scale': 0.01, 'offset': 0., 'fill_value': -999.
                },
                dims=('x', 'y')),
        'Geolocation/resolution_4km/Longitude':
            xr.DataArray(
                da.ones((num_scans, num_cols), chunks=1024,
                        dtype=np.uint16),
                attrs={
                    'scale': 0.01, 'offset': 0., 'fill_value': -999.
                },
                dims=('x', 'y')),
        'Data/resolution_4km/Brightness_Temperature_09':
            xr.DataArray(
                da.ones((num_scans, num_cols), chunks=1024,
                        dtype=np.uint16),
                attrs={
                    'scale': 0.01, 'offset': 0., 'fill_value': -999.
                },
                dims=('x', 'y')),
    }
    return data