Maps of the transition region intensity and Doppler shifts from the Si iv 1403 Å line, obtained at 21:02 UT, associated with the compact UV burst. Panel a shows the spatial distribution of the Si iv 1403 Å line integrated intensity within ±200 km s^-1 from its zero-Doppler shift. Panel b shows the map of an intensity-weighted Doppler shift of the same spectral line, saturated at ± 75 km s^-1. The vertical lines in the panels show the location along which several spectral profiles are displayed in Fig. 5. The temporal evolution of the intensity and Doppler-shift maps is available as an online movie. See Sect. 2.3.