GTAC Observation Log 1. Date : 09/07/2017 2. Observation Sr. No. : 9556 3. Observer : Yashwant Gupta, BHAL CHANDRA JOSHI, Nikhil Vijay Naik, Kishalay De, Yogesh Maan, Manjari Bagchi, Jayanta Roy, Gopakumar Achamveedu 4. Observer's Email : ygupta@ncra.tifr.res.in, bcj@ncra.tifr.res.in, naiknikhil27@gmail.com, ugkishalayde@ug.iisc.in, ymaan@ncra.tifr.res.in, manjari.bagchi@gmail.com, jroy@ncra.tifr.res.in, gopu.tifr@gmail.com 5. Project Name : Towards precision pulsar timing with the upgraded GMRT 6. Project Code : 32_032 7. Operator(s) : Nilesh, Rupsing 8. Command File : /odisk/gtac/cmd/32_032/cmd.8jul17.cmd 9. LTA File : /gsbifrdata/08jul/32_032_610_08jul2017.lta.2, /gsbifrdata/08jul/32_032_610_08jul2017.lta.1, /gsbifrdata/08jul/32_032_610_08jul2017.lta, /gsbifrdata/08jul/32_032_325_08jul2017.lta.2, /gsbifrdata/08jul/32_032_325_08jul2017.lta.1, /gsbifrdata/08jul/32_032_325_08jul2017.lta, /gsbifrdata/08jul/32_032_1420_08jul2017.lta.2, /gsbifrdata/08jul/32_032_1420_08jul2017.lta.1, /gsbifrdata/08jul/32_032_1420_08jul2017.lta, /gwbifrdata1/08jul/32_032_08jul2017_850mhz_gwb.lta.2, /gwbifrdata1/08jul/32_032_08jul2017_850mhz_gwb.lta.1, /gwbifrdata1/08jul/32_032_08jul2017_850mhz_gwb.lta, /gwbifrdata1/08jul/32_032_08jul2017_500mhz_gwb.lta.3, /gwbifrdata1/08jul/32_032_08jul2017_500mhz_gwb.lta.2, /gwbifrdata1/08jul/32_032_08jul2017_500mhz_gwb.lta.1, /gwbifrdata1/08jul/32_032_08jul2017_500mhz_gwb.lta, /gwbifrdata1/08jul/32_032_08jul2017_1460mhz_gwb.lta.3, /gwbifrdata1/08jul/32_032_08jul2017_1460mhz_gwb.lta.2, /gwbifrdata1/08jul/32_032_08jul2017_1460mhz_gwb.lta.1, /gwbifrdata1/08jul/32_032_08jul2017_1460mhz_gwb.lta 10. LogFlag File : /odisk/online1/logflags/32_032B.FLAGS.13, /odisk/online1/logflags/32_032B.FLAGS.12, /odisk/online1/logflags/32_032A.FLAGS.3, /odisk/online1/logflags/32_032A.FLAGS.2, /odisk/online1/logflags/32_032A.FLAGS.1, /odisk/online1/logflags/32_032.FLAGS.14, /odisk/online1/logflags/32_032.FLAGS.13 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+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 : 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 :21 32. Name of Non-Working Antennas (with reason for each) : S02 : No fringe in GWB W03 : Strong RFI. C09 : Fringe. C11,E04,E06,S03,W03,W06 : Low self power @GWB o/p, not getting power equalized 33. Note for Backup : 34. Start and End Time of Obs.(IST): 08 Jul 2017 22:00:00 - 09 Jul 2017 05:15:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :21 37. Comments (During Observations) : ------------GWB Setting--------- GPU_MODE : Realtime GPU_LTA : 4 GPU_ACQ_BW : 200.0000 GPU_FINAL_BW : 200.0000 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 2048 GPU_CHAN_NUM : 0:2047:1 GPU_STOKES : Total_Intensity GPU_SIDEBAND : 1 1 GPU_RF1 : 1460 1460 GPU_DDCLO1 : 0.0000 0.0000 GPU_SB1 : 1 1 GCODE1 : SUBA1 GPU_RF2 : 500 500 GPU_DDCLO2 : 0.0000 0.0000 GPU_SB2 : 1 1 GCODE2 : 32_032A GPU_RF3 : 850 850 GPU_DDCLO3 : 0.0000 0.0000 GPU_SB3 : 1 1 GCODE3 : 32_032B GPU_RF4 : 1460 1460 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : 32_032 GPU_RF5 : 0 0 GPU_DDCLO5 : 0.0000 0.0000 GPU_SB5 : 1 1 GCODE5 : SUBA5 GPU_CNTRL : ONLINE GPU_FSTOP : ON GPU_BEAM_1 : PA GPU_BEAM_2 : PA GPU_BEAM_3 : PA GPU_BEAM_4 : OFF GPU_BM_INT : 8 GPU_GAINEQ : ON GPU_TPA : From GWB GUI. GPU_BITS : 64 inputs. GPU_FILRFI : RFI Filterring OFF --------------------------------------------------------------------------- # GWB GAC configuration is as follows : # BEAM-1:130 :: C01 C04 C06 S01 W01 Total=5 # BEAM-1:175 :: C01 C04 C06 S01 W01 Total=5 # BEAM-2:130 :: C02 C03 E03 W02 Total=4 # BEAM-2:175 :: C02 C03 E03 W02 Total=4 # BEAM-3:130 :: C00 C05 C08 C10 C12 C13 C14 E02 E05 E06 S04 S06 W04 W05 Total=14 # BEAM-3:175 :: C00 C05 C08 C10 C12 C13 C14 E02 E05 E06 S04 S06 W04 W05 Total=14 # BEAM-4:130 :: Total=0 # BEAM-4:175 :: Total=0 ------------------------------------------------------------------------ 21:00 : Started set-up. 21:30 : Power eq and phasing on 3C286. 22:50 : Started command file. 22:55 : Subac2 (U2.pl) hung during triple subarray observation. 22:55 : Phasing problem for suba 3 due to project code. 00:24 : Restarted Suba-array but problem not solved for suba 2. 01:00 : Restarted Suba-array. 01:10 : Phasing problem and suba-array problem solved. 01:19 : Restarted command file. 01:19:33 : Started scan on 1822-096 for ~ 0.805306 min. 01:29:43 : Started scan on 1822-096 for ~ 1.20796 min. 01:31:13 : Started scan on 1822-096 for ~ 4.29496 min. 01:46:10 : Started scan on J1640+2224 for ~ 20.2669 min. 02:11:51 : Started scan on 1822-096 for ~ 1.07374 min. 02:13:15 : Started scan on 1822-096 for ~ 0.53687 min. 02:15:55 : Started scan on J1730-2304 for ~ 19.9984 min. 02:38:00 : GWB collect automatically killed. 02:45:00 : Restarted GWB and command file. 02:48:26 : Started scan on 1822-096 for ~ 0.53687 min. 02:50:23 : Started scan on 1822-096 for ~ 5.10027 min. 02:58:09 : Started scan on J1713+0747 for ~ 20.2669 min. 03:20:13 : Started scan on 1822-096 for ~ 1.07374 min. 03:21:38 : Started scan on 1822-096 for ~ 0.671088 min. 03:23:49 : Started scan on J1738+0333 for ~ 20.2669 min. 03:45:49 : Started scan on 1822-096 for ~ 1.07374 min. 03:47:14 : Started scan on 1822-096 for ~ 0.805306 min. 03:49:35 : Started scan on J1857+0943 for ~ 20.2669 min. 04:14:33 : Started scan on 2202+422 for ~ 1.07374 min. 04:15:58 : Started scan on 2202+422 for ~ 0.805306 min. 04:18:28 : Started scan on J2302+4442 for ~ 20.2669 min. 04:41:53 : Started scan on 3C48 for ~ 0.939523 min. 04:43:13 : Started scan on 3C48 for ~ 0.805306 min. 04:55:07 : Started scan on J0023+0923 for ~ 19.9984 min. 05:15:00 : Stopped scan and observing session over. Note:------------------------------------------- Data files. /data6/gpuuser/09jul2017/*(data files for all beams after 01:19) /data6/gpuuser/08jul2017/* (only beam3 data files)