GTAC Observation Log 1. Date : 22/05/2018 2. Observation Sr. No. : 10278 3. Observer : BHAL CHANDRA JOSHI, Yashwant Gupta, Manjari Bagchi, Prakash Arumugasamy, Krishnakumar MA, Suryarao Bethapudi, Kishalay De, Yogesh Maan, Mayuresh Surnis, Abhimanyu Susobhanan, Dhruv Pathak, Gopakumar Achamveedu, ARUN KUMAR NAIDU, Neelam Dhanda Batra, Siraprapa Sanpa-arsa 4. Observer's Email : bcj@ncra.tifr.res.in, ygupta@ncra.tifr.res.in, manjari.bagchi@gmail.com, prakash@ncra.tifr.res.in, kkma@ncra.tifr.res.in, ep14btech11008@iith.ac.in, kde@caltech.edu, ymaan@ncra.tifr.res.in, mayuresh.surnis@mail.wvu.edu, s.abhimanyu@tifr.res.in, pathakdhruv9786@gmail.com, gopu.tifr@gmail.com, arun@ncra.tifr.res.in, neelam.dhanda@gmail.com, s.tuck.sanpaarsa@gmail.com 5. Project Name : Indian Pulsar Timing Array (InPTA) experiment using the upgraded wideband GMRT and the ORT 6. Project Code : 34_102 7. Operator(s) : Deepak, Rupsing, Sachin, Shilpa, Surender 8. Command File : /odisk/gtac/cmd/ 9. LTA File : /gwbifrdata1/22may/34_102_22may2018_gwb_750lo.lta.2, /gwbifrdata1/22may/34_102_22may2018_gwb_750lo.lta.1, /gwbifrdata1/22may/34_102_22may2018_gwb_750lo.lta, /gwbifrdata1/22may/34_102_22may2018_gwb_500lo.lta.2, /gwbifrdata1/22may/34_102_22may2018_gwb_500lo.lta.1, /gwbifrdata1/22may/34_102_22may2018_gwb_500lo.lta, /gwbifrdata1/22may/34_102_22may2018_gwb_1460lo.lta.2, /gwbifrdata1/22may/34_102_22may2018_gwb_1460lo.lta.1, /gwbifrdata1/22may/34_102_22may2018_gwb_1460lo.lta 10. LogFlag File : /odisk/online1/logflags/34_102C.FLAGS.5, /odisk/online1/logflags/34_102C.FLAGS.4, /odisk/online1/logflags/34_102C.FLAGS.3, /odisk/online1/logflags/34_102B.FLAGS.6, /odisk/online1/logflags/34_102B.FLAGS.5, /odisk/online1/logflags/34_102A.FLAGS.5, /odisk/online1/logflags/34_102A.FLAGS.4 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1454 MHz ,RF2 : 1454 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1505 MHz, ILO2 : 1505MHz , IVLO1 : 51 MHz, IVLO2 : 51 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+12 dB, 32 MHz,ON, IF-CH2 : 4+12 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 : 0 MHz; Step # 0 25. Maximum Channels : 256 26. Channel Numbers : 0:255:1 27. LO5 -1 : 149 28. LO5 -2 : 156 29. Frequency Parameters (TPA) : 1454 1454 1505 1505 51 51 30. Integration Time : 16.1061 Sec 31. No of Antennas Working(Fringing) at the beginning :29 32. Name of Non-Working Antennas (with reason for each) : W03 : Servo problem. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 21 May 2018 21:00:00 - 22 May 2018 09:06:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :28 37. Comments (During Observations) : ------------GWB Setting---------------------------------------------------- GPU_MODE : Realtime GPU_LTA : 4 GPU_ACQ_BW : 100.0000 GPU_FINAL_BW : 100.0000 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 1024 GPU_CHAN_NUM : 0:1023:1 GPU_STOKES : Total_Intensity GPU_SIDEBAND : 1 1 GPU_RF2 : 750 750 GPU_DDCLO2 : 0.0000 0.0000 GPU_SB2 : 1 1 GCODE2 : 34_102C GPU_RF3 : 500 500 GPU_DDCLO3 : 0.0000 0.0000 GPU_SB3 : 1 1 GCODE3 : 34_102B GPU_RF4 : 1460 1460 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : 34_102A GPU_CNTRL : ONLINE GPU_FSTOP : ON GPU_BEAM_1 : Voltage GPU_BEAM_2 : Voltage GPU_BEAM_3 : PA GPU_BEAM_4 : OFF GPU_BM_INT : 8 GPU_GAINEQ : OFF GPU_TPA : From GWB GUI. GPU_BITS : 64 inputs. GPU_FILRFI : RFI Filterring OFF GPU_BEAM_S : OFF --------------------------------------------------------------------------- ------------GWB Setting---------------------------------------------------- GPU_MODE : Realtime GPU_LTA : 4 GPU_ACQ_BW : 100.0000 GPU_FINAL_BW : 100.0000 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 1024 GPU_CHAN_NUM : 0:1023:1 GPU_STOKES : Total_Intensity GPU_SIDEBAND : 1 1 GPU_RF2 : 750 750 GPU_DDCLO2 : 0.0000 0.0000 GPU_SB2 : 1 1 GCODE2 : 34_102C GPU_RF3 : 500 500 GPU_DDCLO3 : 0.0000 0.0000 GPU_SB3 : 1 1 GCODE3 : 34_102B GPU_RF4 : 1460 1460 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : 34_102A GPU_CNTRL : ONLINE GPU_FSTOP : ON GPU_BEAM_1 : Voltage GPU_BEAM_2 : Voltage GPU_BEAM_3 : PA GPU_BEAM_4 : OFF GPU_BM_INT : 8 GPU_GAINEQ : OFF GPU_TPA : From GWB GUI. GPU_BITS : 64 inputs. GPU_FILRFI : RFI Filterring OFF GPU_BEAM_S : OFF ------------------------------------------------------------------------- # sub 2 # 610MHz # C00 C02 C08 W03 W04 W05 W06 E04 E05 E06 S03 S04 S06 ------------------------------------------------------------------------- # sub 3 # 325MHz # C01 C04 C06 C09 C12 ------------------------------------------------------------------------- # sub 4 # 1420MHz # C03 C05 C10 C11 C13 C14 W01 W02 E02 E03 S01 S02 ------------------------------------------------------------------------- # GWB GAC configuration is as follows : # BEAM-1:130 :: C03 C05 C10 C11 C13 C14 E02 E03 S01 S02 W01 W02 Total=12 # BEAM-1:175 :: C03 C05 C10 C11 C13 C14 E02 E03 S01 S02 W01 W02 Total=12 # BEAM-2:130 :: C01 C04 C06 C09 C12 Total=5 # BEAM-2:175 :: C01 C04 C06 C09 C12 Total=5 # BEAM-3:130 :: C00 C02 C08 E04 S03 S04 W04 Total=7 # BEAM-3:175 :: C00 C02 C08 E04 S03 S04 W04 Total=7 ========================================================================== 21:20 : Power eq. on 3C286. 21:30 : Phasing on 3C286. -------------------------------------------------------------------------- 21:35 : GWB ACQ automatic kill. -------------------------------------------------------------------------- 21:40 : Restarted GWB. -------------------------------------------------------------------------- 21:41 : Started command file -------------------------------------------------------------------------- 21:43 : multi subarray server connection problem. -------------------------------------------------------------------------- /cmd2 "lnkndasq" Couldn't connect to Server Connection timed out Couldn't connect to Server Connection timed out -------------------------------------------------------------------------- 22:30 : Tried restarted all subarray and online -------------------------------------------------------------------------- 23:00 : Problem not solved. -------------------------------------------------------------------------- Note : 09:00 pm to 00:00 : Multi-subarray command file problem and problem not resolved so started observation manually. ------------------------------------------------------------------------- ------------------------------------------------------------------------- 22:26:18 : Started scan on 3C286 for ~ 1.61061 min. 23:59:56 : Started scan on 3C286 for ~ 4.29497 min. 00:04:47 : Started scan on 3C286 for ~ 8.85837 min. 00:16:41 : Started scan on 3C286OFF for ~ 4.83184 min. 00:28:16 : Started scan on J1643-1224 for ~ 0.357914 min. 00:30:37 : Started scan on 1822-096 for ~ 5.10027 min. 00:36:16 : Started scan on 1822-096 for ~ 1.16322 min. 00:39:33 : Started scan on J1643-1224 for ~ 29.7963 min. 01:12:54 : Started scan on 1419+064 for ~ 4.11601 min. 01:17:36 : Started scan on 1419+064 for ~ 1.61061 min. 01:21:50 : Started scan on J1600-3053 for ~ 29.2595 min. 01:53:27 : Started scan on 1822-096 for ~ 3.48966 min. 01:57:32 : Started scan on 1822-096 for ~ 1.07374 min. 02:01:27 : Started scan on J1614-2230 for ~ 29.3489 min. 02:34:20 : Started scan on 1609+266 for ~ 4.74236 min. 02:39:39 : Started scan on 1609+266 for ~ 1.52113 min. 02:41:51 : Started scan on J1640+2224 for ~ 29.3489 min. 03:14:44 : Started scan on 1822-096 for ~ 3.40018 min. 03:18:38 : Started scan on 1822-096 for ~ 0.805306 min. 03:21:46 : Started scan on J1713+0747 for ~ 29.7963 min. 03:53:34 : Started scan on 1822-096 for ~ 6.17401 min. 04:00:18 : Started scan on 1822-096 for ~ 1.52113 min. 04:03:07 : Started scan on J1730-2304 for ~ 29.6174 min. 04:34:07 : Started scan on 1822-096 for ~ 3.66862 min. 04:38:21 : Started scan on 1822-096 for ~ 0.984263 min. 04:40:42 : Started scan on J1738+0333 for ~ 28.991 min. 05:10:55 : Started scan on 1822-096 for ~ 3.66862 min. 05:15:09 : Started scan on 1822-096 for ~ 0.805306 min. 05:17:01 : Started scan on J1857+0943 for ~ 29.3489 min. 05:48:30 : Started scan on 1830-360 for ~ 3.48966 min. 05:52:34 : Started scan on 1830-360 for ~ 1.16322 min. 05:54:46 : Started scan on J1909-3744 for ~ 29.9753 min. 06:26:42 : Started scan on 1822-096 for ~ 2.32644 min. ---------------------------------------------------------------------- 06:28 : GWB acq got killed. --------------------------------------------------------------------------- 06:38 : GWB restarted. --------------------------------------------------------------------------- 06:38:56 : Started scan on 1822-096 for ~ 6.53193 min. 06:46:36 : Started scan on 1822-096 for ~ 2.058 min. 06:50:41 : Started scan on J1939+2134 for ~ 17.0009 min. 07:20:44 : Started scan on 2225-049 for ~ 1.34218 min. 07:22:37 : Started scan on 2225-049 for ~ 0.894785 min. 07:27:19 : Started scan on J2124-3358 for ~ 9.1268 min. 07:41:00 : Phasing was not properly done for suba3, so stopped scan and started phasing for suba3. 07:41:34 : Started scan on 2225-049 for ~ 1.52113 min. 07:43:46 : Started scan on 2225-049 for ~ 0.805306 min. 07:48:46 : Started scan on J2124-3358 for ~ 20.8485 min. 07:49:00 : C14 taken for structural repairing, so removed from GAC. 08:13:21 : Started scan on 2225-049 for ~ 1.70009 min. 08:15:33 : Started scan on 2225-049 for ~ 0.715828 min. 08:26:30 : Started scan on J2145-0750 for ~ 21.1169 min. 08:54:42 : Started scan on 3C48 for ~ 1.34218 min. 08:56:34 : Started scan on 3C48 for ~ 4.02653 min. 09:02:31 : Started scan on 3C48OFF for ~ 4.02653 min. 09:06:00 : Stopped scan and observing session over.