for example cd quotes like SYMBOL OPEN , HIGH , LOW, CLOSE, VOLUME OPEN INTEREST.
SYMBOL like USDINR-I ( current month) USDINR-II (NEXT MONTH)
USDINR-III ( FOR MONTH) SAME APPLY TO OTHER SYMBOL..
note; if you are able to convert those fields directly convert as a txt file instead of csv file is better because txt file support some other trading systems like metastock,fchart adget...etc
HOPE you understand and do...
Happy trading..