Huygens made only one direct measurement of the speed of the surface wind just before its landing on Titan, and at that time it was very low, less than 1 metre per second. It returned data to Earth for around 90 minutes, using the orbiter as a relay.

Cassini revealed in great detail the true wonders of Saturn, a giant world ruled by raging storms and delicate harmonies of gravity.

But when added to accelerometer sensors on Huygens and VLBI tracking of the position of the Huygens probe from Earth, reasonably accurate wind speed and direction measurements could still be derived. Ten years ago, the Huygens probe took these images of Saturn's moon Titan at four different altitudes as it descended to the surface. The Entry Assembly Module carried the equipment to control Huygens after separation from Cassini, and a heat shield that acted as a brake and as thermal protection. The Huygens module traveled with Cassini until its separation from the probe on December 25, 2004; Huygens landed by parachute on Titan on January 14, 2005.

The probe had two parts: the Entry Assembly Module and the Descent Module. Cassini carried a passenger to the Saturn system, the European Huygens probe —the first human-made object to land on a world in the distant outer solar system. Once a probe has reached its first primary target, it is no longer listed as "en route" whether or not further travel is … So I'd say the data is still being analyzed and used.

It also provides thermal protection for the probe during its entry into Titan's atmosphere and the 9 m (or 28 ft) parachute that slows the probe down so it can land safely on Titan. For example, though Voyager 1 is still contactable en route to the heliopause, it is listed as "mission complete" because its primary task of studying Jupiter and Saturn has been accomplished. A quick search on Google Scholar turns up 106 articles published in 2018 using Huygens' data. Once Huygens is ejected, ENA controls its journey to Titan.
When the Huygens probe was being designed more than 10 years ago, it was required that the probe had to be magnetically ‘clean’ when switched off, meaning that any residual permanent magnetic fields must not interfere with the sensitive Cassini magnetometers.

The ENA connects Huygens to Cassini until it performs the ejection of the probe. Once ENA has done all this, it is jettisoned and releases the DM. The Descent Module contained the scientific instruments and three different parachutes that were deployed in sequence to control Huygens' descent to the surface …