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I'm trying to run some quantum circuits on qasm simulator using the noise information from IBM Q quantum device:

provider = IBMQ.load_account()
backend = provider.get_backend('ibmq_vigo') 
noise_model = NoiseModel.from_backend(backend)
coupling_map = backend.configuration().coupling_map
basis_gates = noise_model.basis_gates

As I print(noise_model), I got

NoiseModel:
  Basis gates: ['cx', 'id', 'reset', 'rz', 'sx', 'x']
  Instructions with noise: ['reset', 'measure', 'x', 'sx', 'id', 'cx']
  Qubits with noise: [0, 1, 2, 3, 4, 5, 6]
  Specific qubit errors: [('id', [0]), ('id', [1]), ('id', [2]), ('id', [3]), ('id', [4]), ('id', [5]), ('id', [6]), ('sx', [0]), ('sx', [1]), ('sx', [2]), ('sx', [3]), ('sx', [4]), ('sx', [5]), ('sx', [6]), ('x', [0]), ('x', [1]), ('x', [2]), ('x', [3]), ('x', [4]), ('x', [5]), ('x', [6]), ('cx', [6, 5]), ('cx', [5, 6]), ('cx', [5, 4]), ('cx', [4, 5]), ('cx', [5, 3]), ('cx', [3, 5]), ('cx', [3, 1]), ('cx', [1, 3]), ('cx', [1, 2]), ('cx', [2, 1]), ('cx', [1, 0]), ('cx', [0, 1]), ('reset', [0]), ('reset', [1]), ('reset', [2]), ('reset', [3]), ('reset', [4]), ('reset', [5]), ('reset', [6]), ('measure', [0]), ('measure', [1]), ('measure', [2]), ('measure', [3]), ('measure', [4]), ('measure', [5]), ('measure', [6])]

So I could see the source of errors as well as qubit connections. However, I wonder as I give this information to qasm simulator and run the experiments, am I using the real-time error rate as the noise model? If so, should we expect to see any difference between the qasm results and the results from real quantum devices? (I could not print out the noise information, so I'm a bit confused which error values we are using.) Thanks!

I'm trying to run some quantum circuits on qasm simulator using the noise information from IBM Q quantum device:

provider = IBMQ.load_account()
backend = provider.get_backend('ibmq_casablanca') 
noise_model = NoiseModel.from_backend(backend)
coupling_map = backend.configuration().coupling_map
basis_gates = noise_model.basis_gates

As I print(noise_model), I got

NoiseModel:
  Basis gates: ['cx', 'id', 'reset', 'rz', 'sx', 'x']
  Instructions with noise: ['reset', 'measure', 'x', 'sx', 'id', 'cx']
  Qubits with noise: [0, 1, 2, 3, 4, 5, 6]
  Specific qubit errors: [('id', [0]), ('id', [1]), ('id', [2]), ('id', [3]), ('id', [4]), ('id', [5]), ('id', [6]), ('sx', [0]), ('sx', [1]), ('sx', [2]), ('sx', [3]), ('sx', [4]), ('sx', [5]), ('sx', [6]), ('x', [0]), ('x', [1]), ('x', [2]), ('x', [3]), ('x', [4]), ('x', [5]), ('x', [6]), ('cx', [6, 5]), ('cx', [5, 6]), ('cx', [5, 4]), ('cx', [4, 5]), ('cx', [5, 3]), ('cx', [3, 5]), ('cx', [3, 1]), ('cx', [1, 3]), ('cx', [1, 2]), ('cx', [2, 1]), ('cx', [1, 0]), ('cx', [0, 1]), ('reset', [0]), ('reset', [1]), ('reset', [2]), ('reset', [3]), ('reset', [4]), ('reset', [5]), ('reset', [6]), ('measure', [0]), ('measure', [1]), ('measure', [2]), ('measure', [3]), ('measure', [4]), ('measure', [5]), ('measure', [6])]

So I could see the source of errors as well as qubit connections. However, I wonder as I give this information to qasm simulator and run the experiments, am I using the real-time error rate as the noise model?

result = execute(circ, Aer.get_backend('qasm_simulator'),
                 coupling_map=coupling_map,
                 basis_gates=basis_gates,
                 noise_model=noise_model).result()

If so, should we expect to see any difference between the qasm results and the results from real quantum devices? (I could not print out the noise information, so I'm a bit confused which error values we are using.) Thanks!