GTAC Observation Log 1. Date : 13/11/2015 2. Observation Sr. No. : 8165 3. Observer : Nayana 4. Observer's Email : nayana@ncra.tifr.res.in,poonam@ncra.tifr.res.in 5. Project Name : DDT observation. 6. Project Code : DDTB196 7. Operator(s) : Sachin 8. Command File : /odisk/gtac/cmd/poonam/obs13nov.cmd 9. LTA File : /gsbifrdata/13nov/ddtb196_suba4_1280_13nov15.lta.2, /gsbifrdata/13nov/ddtb196_suba4_1280_13nov15.lta.1, /gsbifrdata/13nov/ddtb196_suba4_1280_13nov15.lta, /gsbifrdata/13nov/ddtb196_suba2_610_13nov15.lta.2, /gsbifrdata/13nov/ddtb196_suba2_610_13nov15.lta.1, /gsbifrdata/13nov/ddtb196_suba2_610_13nov15.lta 10. LogFlag File : /odisk/online1/logflags/SUBA2.FLAGS, /odisk/online1/logflags/SUBA4.FLAGS ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 591 MHz ,RF2 : 591 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 540 MHz, ILO2 : 540MHz , IVLO1 : 51 MHz, IVLO2 : 51 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+14 dB, 32 MHz,ON, IF-CH2 : 4+14 dB, 32 MHz,ON GSB SETTINGS : 14. GSB Host : gsbm1_shivneri 15. GSB Mode : Realtime 16. GSB LTA : 8 17. GSB CTRL : ONLINE 18. GSB Fstop : ON 19. GAIN EQ : ON 20. Stokes : Total_Intensity 21. Beam - 1 : OFF 22. Beam - 2 : OFF 23. ACQ BW : 33.333333 MHz 24. Final BW : 33.333333 MHz; Step # 25. Maximum Channels : 256 26. Channel Numbers : 0:255:1 27. LO5 -1 : 149 28. LO5 -2 : 156 29. Frequency Parameters (TPA) : 591 591 540 540 51 51 30. Integration Time : 16.1061 Sec 31. No of Antennas Working(Fringing) at the beginning :26 32. Name of Non-Working Antennas (with reason for each) : E02 : Painting W01 : Painting C04 : Painting W03 : BLDC 33. Note for Backup : 34. Start and End Time of Obs.(IST): 13 Nov 2015 10:00:00 - 13 Nov 2015 11:55:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :26 37. Comments (During Observations) : 10:00 : Started observation setup. 10:30 : Observed that at L-band only 9 antennas were working so changed antennas combination. Completed setup at 11:30 HRs because this combination is changed twice. Final combination is as follows: # sub 2 @ 610 MHz.# C00 C02 C04 C06 C10 C12 C14 W01 W03 W05 E03 E05 S04 S06 ante 14 7 5 3 20 12 2 10 8 14 16 18 22 29 30 cp 0;defs 2;subar 2 # sub 4 @ 1280 MHz.# C01 C03 C05 C08 C09 C11 C13 W02 W04 W06 E02 E04 E06 S01 S02 S03 ante 16 6 1 19 24 4 9 11 13 15 25 17 21 23 26 27 28 cp 0;defs 4;subar 4 11:30 : Started recording on 3C286. 11:45 : Observed that for given 16s integration correlator is giving 19s integrated data. Which was a problem. So tried to restarted chain twice. still problem persisted. 12:15 : Closed observation session.