I want to know exactly how to estimate the Avg CNOT Error rate for IBMQ Backends?
For instance, I tried to estimate the Avg CNOT Error rate for Belem Backend; I randomly prepared the 00,01,10,11 states, applied a CNOT between those qubits, and got the results, but I couldn't get a similar value for the interaction Error for the 0 qubit and the 1 qubit, which is written on an excel file (ibmq_belem_calibrations).
If I can simulate the Error rate estimation with a quantum circuit, then how can I do this?