1. CZT Imager for ASTROSAT SCHEDULE, Model philosophy, etc.

2. T = Q / (N *e) (project time is quantum of work upon number of people) Increase T; Reduce Q; Increase N; Increase e

3. Once upon a time …. Malkar, Janawalekar Hingar, Patil Kothare, Risbud, Pathare,

4. And now …. Hingar, Kutty (half time) Mechanical, thermal + Sinha, Arora (central workshop) + ISAC; Outsource Dipankar CAM + Arun (JRF), Sushila Malkar FE + Amit (project), Nirav (project) Yadav CZT testing + Prabhudesai, Savitri Janawlekar Proc. Ele + outsource Tilak (JRF) Calibration + Jayant, Sriram Milind CPM + ISAC, LEOS (?) Expert advice: Dhanabalan, Bhandari, Gopalakrishna, Sarma, Shah, D’Costa,

5. In future…. Software engineer – bgd. Modeling Students (Science etc.) More collaborators - response matrix generation - science software - test and evaluation

6. Baseline Design June/ July 04 - configuration of the payload Preliminary Design (about a year) Aug '05, - electrical model - structural analysis - thermal analysis - structural model - vibration test - qualification of critical components Flight model fabrication Aug 05 - Aug 06; - calibration; - software development;

7. Detailed Schedule Mechanical: qua-quadrant; Lab model; analysis; Structural model; vibration test CZT: replicate ASIC control + electronics; test out a few types; qualify; procure Detector testing: temp. test; CAM+ data pipe line; Complete electrical model

10. a) Handling low-noise signals b) Handling fast digital data c) Calibration; response function d) Simulation for background e) Onboard data management f) Coded Aperture Mask simulation g) Mask data analysis software h) Data handling software, data archiving etc. i) Overall system design j) Flight hardware fabrication k) Overall project management l) Public outreach/ website etc. The twelve tasks…

11. Critical Areas: (a)Characterisation, Space-qualification and procurement of CZT+ASIC (b) Development of a low noise post-amplifier; on-board intelligence system to handle the ASIC c) Cooling the CZT to the required temperature

12. CZT detector, ASIC & FE electronics Task Q1Q2Q3Q4Q1Q2Q3Q4 Procure and test (128 cm 2 ) Make mother board, Amplifier, Controller Test all indigenous parts Procure CZT Assemble one Quadrant (EM)& test

13. Detector Housing and Collimator Task Q1Q2Q3Q4Q1Q2Q3Q4 Design Structure Analysis Fabrication (SM) Fabrication (FM)

14. Coded Aperture Mask (CAM) Task Q1Q2Q3Q4Q1Q2Q3Q4 Design Simulation Fabrication (SM) Fabrication (FM)

15. Veto Detector (CsI) Task Q1Q2Q3Q4Q1Q2Q3Q4 Design Lab model Test (EM) Fabrication (FM)

16. Cooling System Task Q1Q2Q3Q4Q1Q2Q3Q4 Design, preliminary analysis Detailed Analysis

17. Task Q1Q2Q3Q4Q1Q2Q3Q4 Finalise requirement FPGA design Test Fabrication (FM) Processing Electronics

18. Assembly, Integration & Testing Task Q1Q2Q3Q4Q1Q2Q3Q4 Quadrand1 Quadrand2 Quadrand3 Quadrand4 Calibration & delivery Quadrand1 Quadrand2 Quadrand3 Quadrand4