def get_cropped_array(png_array):
    """Crop the array neatly to the center 100x100 points
    Notes:
        - this has only been tested on 1000x1000 size lattice images
    """
    xlen, ylen, _ = png_array.shape
    cropped_png_array = png_array[0.4165*xlen:0.5143*xlen, 0.4627*ylen:0.5623*ylen, :]
    return cropped_png_array