Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_14 (digital_psip VARCHAR, broadcast_channel VARCHAR, call_sign VARCHAR)

### Question ###
What is the Digital PSIP for channels over 15 with callsign CFTU-DT?

### Accurate SQL ###

SELECT digital_psip FROM table_name_14 WHERE broadcast_channel > 15 AND call_sign = "cftu-dt"