AstroSat is India’s first dedicated multi wavelength space observatory. This scientific satellite mission endeavours for a more detailed understanding of our universe. One of the unique features of AstroSat mission is that it enables simultaneous multi-wavelength observations of various astronomical objects with a single satellite.

The main scientific objectives of AstroSat mission are:


AstroSat - Payloads

The scientific payload on-board Astrosat are Ultra Violet Imaging Telescope (UVIT), Soft X-ray Telescope (SXT), Large Area X-ray Proportional Counter (LAXPC), Cadmium-Zinc-Telluride Imager (CZTI) and Scanning Sky Monitor (SSM). Know more.

Proposal Submission

AstroSat - APPS

AstroSat Proposal Processing System (APPS) is a web based proposal processing software for the Astrosat mission that facilitates the proposal driven operations and participation of the scientific community. To submit a proposal Click here

Proposer's Guide

AstroSat - Proposer's Guide

This document assists the proposers with the AstroSat proposal preparation and submission using the APPS software, it also acts as the proposers’ manual for the APPS software. Download

Data Usage Guidelines

AstroSat - Data Usage Guidelines

The observations will be planned as per mission scheduling. The PI will be informed, after the completion of successful observation for the downloading of processed Level-1 data. Know More


AstroSat - Astrobrowse

The science data from observations made by the instruments on board the spacecraft are available for download after the proprietary period from this portal. Access here


AstroSat - SSM Web

A catalog of the sources detected by SSM and the light curve data file for every source detected can be obtained from this website. Access here


AstroSat - Astroviewer

This is a web-based tool that proposers need to use in order to determine AstroSat visibility period for observations of a target of interest. Access here


AstroSat - ASV

Astrosat Schedule Viewer (ASV): To view the Astrosat obseravtion schedule infomation Click here


AstroSat - Broucher

AstroSat brochure released during its launch containing about PSLV-C30, AstroSat, international customer satellites of PSLV –C30 and satellites of other countries launched by PSLV is available here


AstroSat - RedBook

To access the Astrosat Proposal Redbook, that gives the details of sources observed and accepted/scheduled for AstroSat observations, Click here


Web based Portable Interactive Multi-Mission Simulator (WebPIMMS): to estimate the source count rates Click here


AstroSat - HandBook

AstroSat Handbook describes the technical details of the payloads on-board AstroSat. Access here

LaTex Template

AstroSat - LaTex

Download the Astrosat proposal Scientific justification template here and Technical justification template here.

Image Gallery

AstroSat - Image Gallery

Image Gallery

AstroSat Updates

AstroSat - as1_update

AstroSat Updates