Source in position z=0 with the carton (cardboard) high-end, high-tech holder, but no AIDA (of course).
No pulser. Remember that the pulser is providing peaks around 

Start: 18:11
Stop: 18:31

Files
170525_1811_133Ba_z0cm_003.dlt
170525_1831_133Ba_z0cm_noD4Pulser.root