Hello greetings from Ayuka. I am Gulab Devangan. I work here as a faculty member. Today we are celebrating a seven year completion of Astroset mission. As you know, Astroset is India's first multi-webland astronomy satellite. It was launched on September 2015 by the Indian Space Research Organization and that's that's why we are celebrating the seven year completion today. We are really happy to complete the successful seven years as Ayuka has contributed in all aspects of Astroset mission including instrumentation calibration operation, user support, as well and of course science. Professor Sam Tandon from Ayuka laid one of the major instruments, the ultraviolet imaging telescope, onward Astroset and he actually played the lead role in development of this payload and this particular instrument has produced some of the fantastic images of sky in the ultraviolet band. Here Ayuka scientists have also produced some of the best results using this instrument. Professor Deepakar Bhattacharya, who was a tiger until very recently and now he has moved to Astroset Kaya University. He actually is the payload manager our principal investigator of the CJTI, the cadmium zinc and red image payload. He has contributed in all aspects of this CJTI instrument. We also run here the payload operations center for this CJTI instrument where we receive the raw data from Israel. We process here, we check this data and then send back to Israel which then distributes the data to the scientists all over the country as well as outright in India. We also develop the Astroset proposal system which assists scientist all over India as well as outside to prepare the proposals and submit the proposal for observations with the Astroset mission. This particular software system also helps in operation of the Astroset mission based on the scientific proposal submitted by these scientists. In addition, we also run here the Astroset Science Support Cell where we host all relevant information for Astroset which is useful for using the Astroset data and to produce scientific results. As part of the ASSC or the Astroset Science Support Cell, we conduct training workshops for students, MSC students, PhD students even in the seniors who want to use the data. So my instrument is like it is a basically camera which we will see in your ultraviolet wavelength and we have developed this controllers here as you can see this data acquisition system and this is the data controller. So the first controllers for the images were designed in lab. Further obviously they are modified, upgraded and finally used in the space. In the lab we have worked on UAT part of Astroset. UAT uses start to 50 imager sensor. It is basically director for imaging all the images will be taken by start to 50 detector. Those detector what we purchase were not space qualified. In order to save cost we basically bought off the shell devices and they were space qualified with the help from TF and ISROOP. So for qualifying this detector data acquisition system and high speed detector controller were designed developed in the instrumentation lab. I think we started working on this project in 2003 and we are working for 2 to 3 years continuously on this project and then towards the 2010 to well again there were work in small pieces which was coming in. So wherever there is some issue or some old documentation needs to be referred we are working. I am working on black hole x-ray binary systems. Such systems contain a black hole in a companion star and they are orbiting around the center of mass. There is a gaseous exchange from the companion star over the black hole which leads to the formation of an accretion disk. Such a disk emits high energy x-rays. These x-rays they are found to be variable using different observations. Now there are some interesting features related to the x-rays to this variability that it is apriotic in nature and it is possibly happening on multiple time scales like from willy seconds to possibly even ears and that is why in our work we are after the cause of this variability. So for this purpose we are using the data from the India's multi-vibranth observatory astrosat and there are 5 payloads in the astrosat. We are particularly using the data from 2 of its payloads. So, LXPC is a proportional counter and the good thing about LXPC is that it is a good timing resolution and it covers the hard x-ray range and then we are using the S6T which is an imaging telescope. It covers the soft x-ray range. So, the conjunction of the two is good for our studies. Today I am very happy to share that the astrosat has completed its 7 years. The expected time period for the mission was 5 years and we have completed already 2 more years and I am looking forward for more relevant publications and use of the scientific data from the observatory. So, my research interest mainly revolve around the accretion-diss study of the compact object. So, in during my PhD years and right now also I am working on the black hole x-ray binary sources in which one of the in which the compact object is the black hole and we basically study the accretion disk around this compact object in the x-ray. So, for that study I have utilized the data of the data of S60 and the LXPC instrument on both the astrosat. My primary field of research is to study the evolution of galaxies and how they assembled a mass over time. Very recently we have studied a sample of star forming of galaxies which have been observed by our Indian satellite astrosat. So, I think our work it would help us. I mean bring us one step closer to understanding how these draw galaxies they are evolving and also it will aid in the understanding of galaxy formation and evolution as a whole. Here being at IUCA that means we are inter-university center is great advantage because we receive a number of visitors from the university sector including PhD students as well as MSC students and young researchers and faculty members who come here and use resources available at the associate science apportual they also work with us and produce excellent results. Astrosat has become truly an international space observatory where people from all over India use the data as well as the sub-it propositions for scientific observations. So, far as the associate has produced more than 300 or about 300 research papers in international journals and many more to come we are looking forward for it and we hope that associate will of continue to operate is it has been. Thank you very much.