GTAC Observation Log 1. Date : 31/03/2017 2. Observation Sr. No. : 9296 3. Observer : BHAL CHANDRA JOSHI, Gopakumar Achamveedu, Manjari Bagchi, Mayuresh Surnis, Yogesh Maan, ARUN KUMAR NAIDU, Periasamy K. Manoharan, Krishnakumar MA 4. Observer's Email : bcj@ncra.tifr.res.in, gopu.tifr@gmail.com, manjari.bagchi@gmail.com, mpsurnis@ncra.tifr.res.in, ymaan@ncra.tifr.res.in, arun@ncra.tifr.res.in, mano@ncra.tifr.res.in, kkma@ncra.tifr.res.in 5. Project Name : Extending timing baseline for the pilot proposal for Indian Pulsar Timing Array (InPTA) 6. Project Code : 31_107 7. Operator(s) : Rupsing, Surender 8. Command File : /odisk/gtac/cmd 9. LTA File : /gsbifrdata/31mar/31_107_31mar2017.lta.2, /gsbifrdata/31mar/31_107_31mar2017.lta.1, /gsbifrdata/31mar/31_107_31mar2017.lta 10. LogFlag File : /odisk/online1/logflags/31_107.FLAGS.7, /odisk/online1/logflags/31_107.FLAGS.6 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1292 MHz ,RF2 : 1292 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1230 MHz, ILO2 : 1230MHz , IVLO1 : 62 MHz, IVLO2 : 62 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 20+10 dB, 32 MHz,OFF, IF-CH2 : 20+10 dB, 32 MHz,OFF 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 : OFF 20. Stokes : Total_Intensity 21. Beam - 1 : OFF 22. Beam - 2 : Volt 23. ACQ BW : 16.666666 MHz 24. Final BW : 0 MHz; Step # 0 25. Maximum Channels : 256 26. Channel Numbers : 0:255:1 27. LO5 -1 : 138 28. LO5 -2 : 167 29. Frequency Parameters (TPA) : 1292 1292 1230 1230 62 62 30. Integration Time : 16.1061 Sec 31. No of Antennas Working(Fringing) at the beginning :27 32. Name of Non-Working Antennas (with reason for each) : S03 : Servo problem. W04 : ABC time out. C04 : No freinge@ 175 pol. C05 : No freinge@ 175 pol. C06 : No freinge@ 175 pol. C08 : No freinge@ 175 pol. C11 : Intermittent servo problem. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 31 Mar 2017 03:50:00 - 31 Mar 2017 11:00:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :21 37. Comments (During Observations) : 03:10 : Pawer eq on 1822-096 03:20 : Phasing on 1822-096 --------------------------------------------------------------------------- 03:21:03 : Started scan on 1822-096 for ~ 1.87905 min. 03:25:24 : Started scan on J1600-3053 for ~ 40.2653 min. 04:08:16 : Started scan on 1822-096 for ~ 1.07374 min. 04:09:54 : Started scan on 1822-096 for ~ 1.34218 min. 04:13:27 : Started scan on J1643-1224 for ~ 46.9762 min. 05:03:15 : Started scan on 1822-096 for ~ 1.34218 min. 05:04:57 : Started scan on 1822-096 for ~ 1.34218 min. 05:08:49 : Started scan on J1713+0747 for ~ 42.1443 min. 05:53:29 : Started scan on 1822-096 for ~ 2.41592 min. ------------------------------------------------------------------------- 05:55:00 : GSB problem for C04,C05,C06,C08 175 pol. 06:00:00 : C04,C05,C06,C08 working (restarted GSB das chain) ------------------------------------------------------------------------- 05:56:24 : Started scan on 1822-096 for ~ 0.805306 min. 06:04:47 : Started scan on B1855+09 for ~ 1.61061 min. ------------------------------------------------------------------------- 06:09:20 : C11 remove form GAC ------------------------------------------------------------------------- 06:10:44 : Started scan on B1855+09 for ~ 35.5634 min. 06:10:44 : Started scan on B1855+09 for ~ 30.0647 min. 06:43:07 : Started scan on 1822-096 for ~ 0.805306 min. 06:44:26 : Started scan on 1822-096 for ~ 2.14748 min. 06:47:05 : Started scan on 1822-096 for ~ 1.07374 min. 06:50:23 : Started scan on J1909-3744 for ~ 45.22122 min. 06:50:23 : Started scan on J1909-3744 for ~ 45.3655 min. 07:39:27 : Started scan on 1822-096 for ~ 1.07374 min. 07:41:02 : Started scan on 1822-096 for ~ 2.95279 min. --------------------------------------------------------------------- 07:41:00 : C04,C05,C06,C08 175 pol not working (restarted GSB das chain) ----------------------------------------------------------------------- 07:47:30 : Restarted GSB das chain. 07:48:29 : Started scan on 1822-096 for ~ 0 min. 07:52:29 : Started scan on B1937+21 for ~ 15.3008 min. 08:10:38 : Started scan on 1822-096 for ~ 1.87905 min. 08:12:59 : Started scan on 1822-096 for ~ 3.48966 min. 08:12:00 : C04,C05,C06,C08 Removed from GAC due to C04,C05,C06,C08 175 pol not working. 08:22:19 : Started scan on J2124-3358 for ~ 50.1974 min. 09:01:00 : W03 W04 S02 & S03 Electrical problem. 09:10:00 : S02 started working. 09:15:17 : Started scan on 1822-096 for ~ 0.805306 min. 09:16:42 : Started scan on 1822-096 for ~ 0.268435 min. 09:16:00 : E03 taken for Painting hence Removed From GAC. 09:20:24 : Started scan on J2145-0750 for ~ 31.1385 min. 09:54:09 : Started scan on 1822-096 for ~ 0.805306 min. 09:55:08 : Started scan on 1822-096 for ~ 1.34218 min. 09:56:56 : Started scan on 1822-096 for ~ 0.805306 min. 10:04:19 : Started scan on J2317+1439 for ~ 17.4483 min. -------------------------------------------------------- 10:10:00 : Buffer loss observed in GSB ACQ window. -------------------------------------------------------- 10:52:46 : Started scan on 3C48 for ~ 1.34218 min. 10:55:19 : Started scan on track dec off(+5d). 11:00:00 : Stopped scan and observing session over.