1) NPE updates by Kunsu
slide 4: overlay data gRefMult with simulation
slide 7: plot electron pT distribution from gamma conversions, and from Dalitz decay separately, to see whether we will have sufficient statistics with full simulation sample. 
slide 8: Xiaozhi will check the generation macro to find out where the problem for D0 decay comes from
slide 10: will plot HFT/TPC ratio plot and compare with data
slide 11: this shift in mean DCAxy is not understood, will think about it
slide 14: will compare the distribution in data with simulation