would like to confirm with you that if the Intercept value mentioned in the
online tool should be fixed to 1e-10A, that is 100pA. And if the Iz mentioned
in the datasheet is different from the Intercept current. How is the
relationship between the two things?
It is at 100pA, the standard intercept current. However, you can change the
intercept current with the choice of external resistors, please see page 11 in
the datasheet. Also here is a spreadsheet in the attachment that may help more
than the online tool.