  Physical systems for quantum computation require calibration of the control
parameters based on their physical characteristics by performing a chain of
experiments that gather most precise information about the given device. It
follows that there is a need for automated data acquisition and interpretation.
In this work, we have developed a tool that allows for automatic analysis of
single-tone spectroscopy (STS) results for a single cell consisting of qubit
and resonator in the circuit quantum electrodynamics (cQED) architecture. Using
analytic approaches and maximum likelihood estimation, our algorithm is capable
of finding all relevant physical characteristics of the cell by using only the
measured STS data. The described approach is fast and robust to noise, and its
open-source Python implementation can readily be used to calibrate transmon
qubits coupled to notch-port resonators.
