CHIME/FRB beam model reproduced with cfbm at 600 MHz. The left panel shows the beam intensity map in the range [ − 40° ,40° ] (East-West) and [ − 60° ,60° ] (North-South). The upper and bottom right panels show the East-West slice (y = 0°) and North-South slice along the meridian (x = 0°) respectively. The relative beam intensity is dimensionless, and normalized to the transit of Cyg A (Amiri et al. 2022). To include the side-lobe in our simulation, the beam range [ − 15° ,15° ] (East-West) × [−60° ,60° ] (North-South) is considered, where the East-West borders are indicated with dash-dotted lines.