Ratio of measured apparent flux density (gray dots) as a function of the ratio of the primary beam model attenuations, for a selection of bright, compact sources that are found in overlap areas between neighboring pointings in a Dec range close to the GMRT latitude, Top: when using the original GMRT primary beam model (see Fig. 3), there is a systematic deviation from the ideal line of unity (black dotted line), which is emphasized by plotting the median trend of binned apparent flux ratios (solid line; dashed lines represent the one sigma scatter). Bottom: when using the updated primary beam model, this systematic deviation is strongly suppressed.
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