Hi Suchitra,
With regards to the format of your tick, check out the Plotly documentation here: https://plotly.com/javascript/reference/layout/xaxis/#layout-xaxis-tickformat. You will add this to your Layout of your AnyChart widget.
AnyChart does not currently have a refresh functionality. The best way to update it, is to implement a microflow timer that refreshes your page or entity (depending on your page's design) at the desired interval.