Top row: RHESSI imaging of the flare on 2011 March 09 over the time range UT 23:20:20−23:21:08. Images were created over the energy range 25.0−100.0 keV using the Pixon algorithm with an integration time of 12 s and detectors 3F−8F. The applied colour scaling is based on the highest and lowest data values present in the images displayed. Overplotted in grey are the 10% and 30% intensity contours. Bottom row: spectral fits in count flux units made during the same intervals.The background-subtracted data are plotted in black with the background level plotted in pink. The total fit is plotted in red along with the thermal component (green), the thick-target component (orange), albedo component (purple), and pulse pileup correction (cyan). The normalised residuals are shown in each plot in units of sigma.