GTAC Observation Log 1. Date : 25/07/2014 2. Observation Sr. No. : 7246 3. Observer : Rajeshwari Dutta, Raghunathan Srianand, Neeraj Gupta, Patrick Petitjean, Pasquier Noterdaeme, hadi Rahmani 4. Observer's Email : rdutta@iucaa.ernet.in, anand@iucaa.ernet.in, nrjgupta@gmail.com, ppetitje@iap.fr, noterdaeme@iap.fr, hadi@iucaa.ernet.in 5. Project Name : CHITALS: Cold HI 21-cm Absorption Line Survey 6. Project Code : 26_029 7. Operator(s) : Navnath, Pramod, Rupsing 8. Command File : /odisk/gtac/cmd/rdutta/qgpj1319m00.cmd,,/odisk/gtac/cmd/rdutta/qgpj1648p24.cmd 9. LTA File : /gsbifrdata/24jul/26_029_24jul2014.lta.1,/gsbifrdata/24jul/26_029_24jul2014.lta 10. LogFlag File : /odisk/online1/logflags/26_029.FLAGS.21,/odisk/online1/logflags/26_029.FLAGS.20,/odisk/online1/logflags/26_029.FLAGS.19,/odisk/online1/logflags/26_029.FLAGS.18 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1102 MHz ,RF2 : 1102 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1040 MHz, ILO2 : 1040MHz , IVLO1 : 62 MHz, IVLO2 : 62 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+12 dB, 16 MHz,ON, IF-CH2 : 4+12 dB, 16 MHz,ON GSB SETTINGS : 14. GSB Host : gsbm1 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 : 16.666666 MHz 24. Final BW : 16.666666 MHz; Step # 0 25. Maximum Channels : 512 26. Channel Numbers : 0:511:1 27. LO5 -1 : 138 28. LO5 -2 : 167 29. Frequency Parameters (TPA) : 1102 1102 1040 1040 62 62 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) : C09 : MCM link is not visible. W03 : Maintenance W05 : Maintenance C12 : RF Problem 33. Note for Backup : 34. Start and End Time of Obs.(IST): 24 Jul 2014 18:00:00 - 25 Jul 2014 00:50:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :27 37. Comments (During Observations) : 18:00:00 ::Started setup. 18:06:00 ::Started scan on 3C286 for 10 min. 18:22:16 ::Cmd file started /odisk/gtac/cmd/rdutta/qgpj1319m00.cmd, 20:00:46 :: cmd file stopped and C12 started working. 20:05:01 :: Started scan on 3C286 for 10min. 20:12:00 :: scan stopped. ------------------------------------------------------------------- 20:13:16 ::setup change. GSB line observation setup RF band= 1390 (1330 - 1450) LO1= 1300 (lower) IFBW= 18 GSB [ACQ] BW= 16.6666 Total Channel= 512 20:20: Started scan on 3C286 for 10min. 20:35: Cmd file Started ' /odisk/gtac/cmd/rdutta/qgpj1648p24.cmd' 00:33: Stopped command file. 00:39: Started scan on 3C48. 00:50: Stopped scan and observation session over.