Cylindrical Stokes-I power spectra ratio after DD calibration of DDECAL to SAGECAL given a calibration strategy, the one-step or two-step method (top), and of the one-step to two-step methods given a DD calibration algorithm, DDECAL or SAGECAL (on bottom). The dashed lines indicate the 5° (primary beam), 20°, and 90° (instrumental horizon) delay lines from the phase centre from bottom to top. Top: red indicates excess power from DDECAL and blue indicates excess power from SAGECAL. Bottom: red indicates excess power from the one-step method and blue indicates excess power from the two-step method.