Calibration of the Advanced LIGO detectors is the characterization of the
detectors' response to gravitational waves. Understanding the detector
calibration is crucial to accurately and precisely produce gravitational
wave strain data. Estimates of binary black hole parameters like total
masses, distance, and sky location directly depend on the accuracy and
precision of calibrated data. Tests of general relativity also rely on
properly calibrated data, as miscalibrations could be degenerate with
deviations from GR. Quantifying the detector response, response
uncertainty, and producing calibrated strain data is the role of the
calibration group. We describe the method of producing calibration
uncertainty budgets for both LIGO detectors in the first and second
LIGO Lab called "LIGO Seminar", which is not password protected.
NOTE: These and all other scheduled LIGO seminars are listed on the LIGO
Laboratory seminar calendar for convenient reference.