Kalam quickly repudiated Santhanam and said that the test had yielded the desired yield.

'After the test, there was a detailed review, based on the two experimental results - seismic measurement close to the site and around and radioactive measurement of the material after post shot drill in the test site,' Kalam had told IANS Thursday.

'From these data, it has been established by the project team that the design yield of the thermonuclear test has been obtained,' he added.

Atomic Energy Commission chief Anil Kakodkar also said the tests had achieved '100 percent desired results'.

The defence ministry, too, had reacted sharply to Santhanam's contention, saying India has a meaningful nuclear deterrent.