def single_pcrosstalk(total_pcrosstalk: float) -> float:
    """
    Inverse formula to ``total_pcrosstalk''

    Parameters
    ----------
    total_pcrosstalk : float
        The probability of total crosstalk events.

    Returns
    -------
    p_crosstalk : float
        The probability of a single crosstalk event.

    """
    return 1 - (1 - total_pcrosstalk) ** 0.25