Top: 5-day average light curve in counts per second of RXTE/ASM data covering the period of the two outbursts (January 2003 to June 2004) in the energy range 2.5–12 keV. Bottom: 4 h average light curve of the INTEGRAL/IBIS/ISGRI data in the energy range of 17–80 keV in the same period. The time between the dashed lines corresponds to the period when the source was within the JEM-X field of view, and burst searching analysis was conducted. A zoom on this time interval is provided in Fig. 2, where the times of detection of X-ray bursts are shown. The solid lines indicate the times of additional Galactic Plane Scan pointings, when GS 0836–429 was again within the JEM-X field of view. The outlier observed in the IBIS/ISGRI light curve around MJD 53 400 is an instrumental artefact.