Welcome to the Astrosat Science Support Cell (ASSC), operated jointly by the Indian Space Research Organisation (ISRO) and the Inter-University Centre for Astronomy and Astrophysics (IUCAA). The ASSC assists Guest Observers in making observing proposals and analyzing the science data acquired by the AstroSat mission. This site provides tools and documentation required for proposal writing and data analysis, along with necessary updates. The ASSC also organizes workshops/meetings and operates a helpdesk. The ASSC works in close collaboration with the Indian Space Science Data Centre (ISSDC) and the Payload Operation Centres of UVIT, LAXPC, SXT, and CZTI instruments.

The problem of gaps in X-centroid in the L1 data of UVIT.

Please click here to view a PDF document on this issue.

AstroSat Call for Proposal: A13 cycle

Observing proposals are invited in response to the Announcement of Opportunity (A0) for open time Cycle A13. This announcement is open to Indian scientists/ researchers residing and working at institutes/Universities/colleges in India for 55% of the time and to Non-Indian scientists/ researchers, Non-Resident Indians (NRIs), working at space agencies/ institutes/ Universities/ colleges around the globe for 20% of the time. The final selection of submitted proposals will be based on peer review by the AstroSat Time Allocation Committee (ATAC).

Announcement of Opportunity: 13th February 2023
Astrosat cycle 13 soliciting proposals for observations between: 1st October 2023 to 30th September 2024
The last date for submission of proposals: 31st March 2023, 3:30 PM IST

The full AO will be available at ISRO web site

Click here to submit a new proposal using ISRO's APPS (AstroSat Proposal Processing System) application.

Quick links:

  Resources for AstroSat proposal submission
  Login to AstroSat Proposal Processing System
  Sky Plot of AstroSat Observations
  AstroSat scheduled observation viewer
  AstroSat observation logs
  Astrosat Source Visibility Tool
  Multi-missions Source Visibility Tool
  Data Archive for AstroSat mission
  Publications from AstroSat
  PhD theses from AstroSat
  AstroSat Data Utilization in Publications
  Advanced AstroSat Data Analysis Workshop 21 - 30 June 2021