Time-resolved (1s bins) properties with 1σ errors of the thermonuclear X-ray burst observed from IGR J17591–2342 with AstroSat/LAXPC. Panels a–c: Background-subtracted count rates in the energy range 3 − 6 keV, 12 − 15 keV, and their ratio, respectively. Panels d–f: Blackbody radius (r_BB/D₁₀), blackbody temperature kT_BB, and bolometric (0.01–100 keV) blackbody flux F_BB from the burst intervals best fits using the model tbabs(bbodyrad+constant*powerlaw+gauss+gauss) (see Sections 3, 4 and 5 for more details). The dotted horizontal line marks the F_BB at the second touchdown point (see Section 5.2). Panel g: Reduced χ² of spectral fits.