Heartbeat survey studies return telemetry on user engagement with the survey prompt. The heartbeat pings do not contain the survey responses themselves, which are stored by SurveyGizmo.
The telemetry is received using the
heartbeat document type,
which is described in the Firefox source tree docs.
Heartbeat responses may be linked to Firefox telemetry
if there is a
"includeTelemetryUUID": true key in the
Heartbeat never reports telemetry
client_ids to SurveyGizmo, but,
includeTelemetryUUID is true,
user_id is reported to SurveyGizmo
userid URL variable.
heartbeat ping is sent to Mozilla,
containing both the telemetry
client_id and the Normandy
userid that was reported to SurveyGizmo.
userid is reported by appending it to the
surveyId field of the ping, like:
These can be extracted from the ping table for analysis using expressions like:
SPLIT(payload.survey_id,'::')[OFFSET(1)] AS surveygizmo_userid
Heartbeat data is available in the
telemetry.heartbeat table in BigQuery.
Its structure matches the heartbeat ping schema.