Calibration starts with spectroscopy: sweep frequency, find the response peak, and tune the microwave drive until the qubit is controllable. These interactives make the hidden assumptions visible: steady-state vs pulsed measurements, and why stronger drive both helps and hurts.
Stronger drive raises the signal but saturates at 0.5 in CW steady-state, while the linewidth grows as sqrt(1+s). That tradeoff is why calibration uses both weak and strong drives, depending on what you are measuring.