How to use the pyuvdata.utils.get_lst_for_time function in pyuvdata

Returns
    -------
    lst_array: array of float
        lst_array corresponding to time_array and at telescope location.
        Units are radian.

    """
    if not isinstance(uv, (UVCal, UVData)):
        raise ValueError(
            "Function lst_from_uv can only operate on " "UVCal or UVData object."
        )

    tel = uvtel.get_telescope(uv.telescope_name)
    lat, lon, alt = tel.telescope_location_lat_lon_alt_degrees
    lst_array = uvutils.get_lst_for_time(uv.time_array, lat, lon, alt)
    return lst_array

# get time information
        self.time_array = header["time_array"][:]
        integration_time = header["integration_time"]
        self.integration_time = integration_time[:]
        proc = None
        if "lst_array" in header:
            self.lst_array = header["lst_array"][:]
            # check that lst_array in file is self-consistent
            if run_check_acceptability:
                (
                    latitude,
                    longitude,
                    altitude,
                ) = self.telescope_location_lat_lon_alt_degrees
                lst_array = uvutils.get_lst_for_time(
                    self.time_array, latitude, longitude, altitude
                )
                if not np.all(
                    np.isclose(
                        self.lst_array,
                        lst_array,
                        rtol=self._lst_array.tols[0],
                        atol=self._lst_array.tols[1],
                    )
                ):
                    warnings.warn(
                        "LST values stored in {file} are not self-consistent "
                        "with time_array and telescope location. Consider "
                        "recomputing with utils.get_lst_for_time.".format(file=filename)
                    )
        else:

self.Ntimes = len(np.unique(self.time_array))

        # check if lst array is saved. It's not a standard metadata item in uvfits,
        # but if the file was written with pyuvdata it may be present
        # (depending on pyuvdata version)
        proc = None
        if "LST" in vis_hdu.data.parnames:
            # angles in uvfits files are stored in degrees, so convert to radians
            self.lst_array = np.deg2rad(vis_hdu.data.par("lst"))
            if run_check_acceptability:
                (
                    latitude,
                    longitude,
                    altitude,
                ) = self.telescope_location_lat_lon_alt_degrees
                lst_array = uvutils.get_lst_for_time(
                    self.time_array, latitude, longitude, altitude
                )
                if not np.all(
                    np.isclose(
                        self.lst_array,
                        lst_array,
                        rtol=self._lst_array.tols[0],
                        atol=self._lst_array.tols[1],
                    )
                ):
                    warnings.warn(
                        "LST values stored in this file are not "
                        "self-consistent with time_array and telescope "
                        "location. Consider recomputing with "
                        "utils.get_lst_for_time."
                    )

ValueError
            If the frequencies are not evenly spaced or are separated by more
            than their channel width.
            The `phase_type` of the object is "unknown".
        TypeError
            If any entry in extra_keywords is not a single string or number.

        """
        from . import aipy_extracts

        # change time_array and lst_array to mark beginning of integration,
        # per Miriad format
        miriad_time_array = self.time_array - self.integration_time / (24 * 3600.0) / 2
        if self.telescope_location is not None:
            latitude, longitude, altitude = self.telescope_location_lat_lon_alt_degrees
            miriad_lsts = uvutils.get_lst_for_time(
                miriad_time_array, latitude, longitude, altitude
            )

        # Miriad requires j>i which we call ant1 1: