def METHOD_NAME(eimage, full_well):
    """Helper function to find which channels (x values) have at least one saturated pixel.
    Parameters
    ----------
    eimage: numpy array
        The "eimage" containing the image data in units of electrons per pixel.
    full_well: int
        The pixel full well/saturation value in electrons.
    Returns
    -------
    set: A set of integers giving all x values with a saturated pixel.
    """
    # Find channels (by x-index) with signal above full_well.
    return set(np.where(eimage > full_well)[1])