# How's the depolarization channel applied to one qubit circuits?

Suppose that in all gates used in a one qubit circuit the depolarization channel is applied, i.e.

noise_depchan.add_all_qubit_quantum_error(error_gate1, ["id","rz","sx","x","ry", "p","u3"])


If my transpile level is zero, how is then the depolarization channel applied to an initial state $$|\Psi\rangle$$ after $$n$$-gates drawn from the above list?