In Boom 1000 (500) index, there's an average of one spike in the price series that occurs at anytime within 1000 (500) ticks.
Synthetic Indices are markets that are simulated. that isThey behave like real monetary market however their behaviour is created from the use of randomly generated numbers. These random numbers are generated through a pc programmed. broker is unable predict which numbers will be generated and hence is unable to cheat the market.