def __init__(self, decay_prob: float, prepend: bool = True):
        """A depolarizing noise model with damped readout error.

        Args:
            decay_prob: Probability of T1 decay during measurement.
            prepend: If True, put noise before affected gates. Default: True.
        """
        value.validate_probability(decay_prob, 'decay_prob')
        self.readout_decay_gate = ops.AmplitudeDampingChannel(decay_prob)
        self._prepend = prepend
A depolarizing noise model with damped readout error.

        Args:
            decay_prob: Probability of T1 decay during measurement.
            prepend: If True, put noise before affected gates. Default: True.
        
cirq-core/cirq/contrib/noise_models/noise_models.py