Normalized histograms of the gain amplitudes at 152 MHz for all stations and time solutions. Solid lines show Rice distribution fits for each calibration scenario. Each panel represents a matrix element of the Jones matrix. The gains are referenced to the core station CS001HBA1 by multiplying them with the inverse gain matrix of CS001HBA1. The blue histogram shows the empirical PDF of gain amplitude solutions for the ground-truth case, obtained by forward-simulating and calibrating with a PSO sky model. The orange histogram shows the empirical PDF for gain solutions from simulations using a PSDE sky model but calibrated with a PSO model, thus omitting diffuse Galactic emission during the DI gain calibration, as described in the text.