To set the Ping monitor to not show as down unless it's down globally
Site24x7 uses different ISPs for all our monitoring servers and each server uses a different network path to reach your server. Hence, the monitor shows as down from one location and up from another one.
You can edit the "Threshold and Availability" profile associated with the Ping monitor and set the following option as "Number of locations to report monitor as down" as "All selected location" and update it. This will help you to send alerts only when the monitor is reported as down from all selected locations.