You will compare result after independently using each techniques through their respective softwares.
For quantitative: Measure of dispersion for descriptive statistics and for inferential chi-square, T-test/Anova, Correlation or regression analysis, multivariate analysis.
For qualitative: Thematic analysis, Content analysis, Narrative analysis or grounded theory
The best approach to explanatory sequential designs is to complete at least a tentative analysis of the quantitative data, and then base the qualitative data collection and analysis on those findings.