How many times is there a golden tickets entry when the callback venue is rcti studio, jakarta?
CREATE TABLE "table1_28793672_1" (
  "episode_air_date" text,
  "audition_city" text,
  "date" text,
  "venue" text,
  "callback_date" text,
  "callback_venue" text,
  "golden_tickets" real
);
SELECT COUNT("golden_tickets") FROM "table1_28793672_1" WHERE "callback_venue"='RCTI Studio, Jakarta';