Market Depth Event

Upon your initial subscription, you will receive a complete packet (delivered as a flat string) on the relevant event channel over the socket. For any subsequent market data events that involve incremental changes, you will receive updates as partial changes in a flat string format. For instance, if there is a change only in the Last Traded Price (LTP), that specific update for the instrument will be sent to you. For full market data events, a complete event message will be broadcast every time. However, for partial market data events, only the relevant partial message will be broadcast each time.

MarketDepth Event message for JSON Full Packet

socket.on("1502-json-full",function(data){
    console.log("data is "+data);
}); 

Response to 1502-json-full response

{
    "Asks": [
        {
            "BuyBackMarketMaker": 0,
            "Price": 12803.75,
            "Size": 50,
            "TotalOrders": 1
        },
        {
            "BuyBackMarketMaker": 0,
            "Price": 12803.8,
            "Size": 50,
            "TotalOrders": 1
        },
        {
            "BuyBackMarketMaker": 0,
            "Price": 12804.25,
            "Size": 50,
            "TotalOrders": 1
        },
        {
            "BuyBackMarketMaker": 0,
            "Price": 12804.95,
            "Size": 50,
            "TotalOrders": 1
        },
        {
            "BuyBackMarketMaker": 0,
            "Price": 12805.0,
            "Size": 50,
            "TotalOrders": 1
        }
    ],
    "Bids": [
        {
            "BuyBackMarketMaker": 0,
            "Price": 12790.15,
            "Size": 50,
            "TotalOrders": 1
        },
        {
            "BuyBackMarketMaker": 0,
            "Price": 12790.1,
            "Size": 50,
            "TotalOrders": 1
        },
        {
            "BuyBackMarketMaker": 0,
            "Price": 12789.8,
            "Size": 50,
            "TotalOrders": 1
        },
        {
            "BuyBackMarketMaker": 0,
            "Price": 12789.2,
            "Size": 50,
            "TotalOrders": 1
        },
        {
            "BuyBackMarketMaker": 0,
            "Price": 12786.65,
            "Size": 50,
            "TotalOrders": 1
        }
    ],
    "ExchangeInstrumentID": 52232,
    "ExchangeSegment": 2,
    "ExchangeTimeStamp": 1714644357,
    "MessageCode": 1502,
    "Touchline": {
        "AskInfo": {
            "BuyBackMarketMaker": 0,
            "Price": 12790.0,
            "Size": 50,
            "TotalOrders": 1
        },
        "AverageTradedPrice": 12750.69,
        "BidInfo": {
            "BuyBackMarketMaker": 0,
            "Price": 12790.0,
            "Size": 50,
            "TotalOrders": 1
        },
        "BuyBackTotalBuy": 0,
        "BuyBackTotalSell": 0,
        "Close": 12964.2,
        "High": 12850.85,
        "LastTradedPrice": 12790.0,
        "LastTradedQuantity": 50,
        "LastTradedTime": 1714644308,
        "LastUpdateTime": 1714644357,
        "Low": 12670.0,
        "Open": 12850.8,
        "PercentageChange": -1.34,
        "TotalBuyQuantity": 8650,
        "TotalSellQuantity": 8500,
        "TotalTradedQuantity": 10850,
        "TotalValueTraded": 138344986.5
    }
}

MarketDepth Event message for JSON Partial Packet

socket.on("1502-json-partial",function(data){
    console.log("data is "+data);
});

Response to 1502-json-partial response

{
    "ai": "0|1|2529.90|1|1|1|2530.15|1|2|1|2530.20|1|3|1|2530.25|1|4|1|2530.30|1",
    "ap": 2532.59,
    "bi": "0|1|2529.65|1|1|1|2529.00|1|2|1|2528.55|1|3|1|2528.45|1|4|1|2528.40|1",
    "c": 2531.8,
    "h": 2546.9,
    "l": 2523.45,
    "ltp": 2530.3,
    "ltq": 1,
    "ltt": 1714645518,
    "lut": 1714645520,
    "o": 2544.0,
    "pc": -0.06,
    "t": "1_22",
    "tb": 48881,
    "ts": 84817,
    "v": 76158,
    "vp": 192876989.22
}

Reference

Symbol	Explanation
t	ExchangeSegment.ExchangeInstrumentID(exchange segment enum with underscore along with instrumentID of the particular subscribed instrument)
ltp	Last traded price
ltq	Last traded quantity
tb	Total buy quantity
ts	Total sell quantity
v	The volume is commonly reported as the number of shares that changed hands during a given day.
ap	Average Traded Price
ltt	Last Traded Time
lut	Last Update Time
pc	Percent Change
o	Open
h	High
l	Low
c	Close
vp	Total price volume
ai	Ask Info(Ask Size Index + "
bi	Bid Info(Bid Size Index+'