When using Juniper Secure Analytics (JSA) ver 7.3.1, by default, the column headers are not included in the export to csv report. This article explains how to include column headers in the csv export.
When doing an export to csv of events in the log activity tab, the column headers are not displayed in the exported csv. Notice in the csv result the column headers are not displayed:
In JSA version 7.3 you can change this.