GTAC Observation Log 1. Date : 25/11/2017 2. Observation Sr. No. : 9900 3. Observer : Yashwant Gupta, BHAL CHANDRA JOSHI, Manjari Bagchi, Sushan Konar, Biplab Bijay, Mayuresh Surnis, Gopakumar Achamveedu, Debades Bandyopadhyay, Dipankar Bhattacharya, Avinash Anant Deshpande, Biprateep Dey, Vishal R Gajjar, Sanjay S. Kudale, Yogesh Maan, Sachindra Naik, Paramasivan Arumugam, Alak Ray, Boris Sindhu Kalita, Sajad Ahmad Bhat 4. Observer's Email : ygupta@ncra.tifr.res.in, bcj@ncra.tifr.res.in, manjari.bagchi@gmail.com, sushan@ncra.tifr.res.in, biplab@ncra.tifr.res.in, mpsurnis@ncra.tifr.res.in, gopu.tifr@gmail.com, debades.bandyopadhyay@saha.ac.in, dipankar@iucaa.in, desh@rri.res.in, biprateep.d@niser.ac.in, gajjar@ncra.tifr.res.in, ksanjay@gmrt.ncra.tifr.res.in, maan@astron.nl, snaik.prl@gmail.com, p.arumugam@gmail.com, akr@tifr.res.in, boris.kalita@ncra.tifr.res.in, sajadtarigami@gmail.com 5. Project Name : Survey for Pulsars and Fast Transients with the upgraded GMRT : Completing the Pilot Study 6. Project Code : 33_077 7. Operator(s) : Deepak, Navnath, Rupsing, Sachin, Shilpa 8. Command File : /odisk/gtac/cmd/33_077/25nov17/obs1_new.cmd,/odisk/gtac/cmd/33_077/25nov17/obs2_new.cmd 9. LTA File : /gwbifrdata1/25nov/33_077_25nov2017_gwb.lta 10. LogFlag File : /odisk/online1/logflags/33_060.FLAGS.8 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 306 MHz ,RF2 : 306 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 255 MHz, ILO2 : 255MHz , 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 : OFF 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) : 306 306 255 255 51 51 30. Integration Time : 2.0132 Sec 31. No of Antennas Working(Fringing) at the beginning :28 32. Name of Non-Working Antennas (with reason for each) : E04 : Dish reflector surface refurbishment work. W05 : Painting. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 25 Nov 2017 10:00:00 - 25 Nov 2017 17:00:00 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 : 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_RF4 : 500 500 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : 33_077 GPU_CNTRL : ONLINE GPU_FSTOP : ON GPU_BEAM_1 : OFF GPU_BEAM_2 : OFF GPU_BEAM_3 : IA 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 GAC configuration is as follows : # BEAM-2:130 :: C00 C01 C02 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 E03 E05 E06 S01 S02 S03 S04 S06 W01 W02 W03 W04 W06 Total=28 # BEAM-2:175 :: C00 C01 C02 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 E03 E05 E06 S01 S02 S03 S04 S06 W01 W02 W03 W04 W06 Total=28 # BEAM-3:130 :: C00 C01 C02 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 E03 E05 E06 S01 S02 S03 S04 S06 W01 W02 W03 W04 W06 Total=28 # BEAM-3:175 :: C00 C01 C02 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 E03 E05 E06 S01 S02 S03 S04 S06 W01 W02 W03 W04 W06 Total=28 --------------------------------------------------------------------------- 10:00 : Started settings. 10:15 : Power equalized on 1822-096 @ 150 counts for GWB. 10:30 : Phasing done on 1822-096. 10:32 : Started scan on B1740-13 for ~ 8.0978 min. 10:44 : '/odisk/gtac/cmd/33_077/25nov17/obs1_new.cmd' command file started. 11:56 : Stopped command file. 12:00 : '/odisk/gtac/cmd/33_077/25nov17/obs2_new.cmd' command file started. 13:27 : GWB shows strong spike at 350MHz (Source : 580D+008R32). 13:41 : GWB shows strong spike at 350MHz (Source : 581D+008R32). 14:25 : W06 and S06 removed from GAC. --------------------------------------------------------------------------- # GWB GAC configuration is as follows : # BEAM-3:130 :: C00 C01 C02 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 E03 E05 E06 S01 S02 S03 S04 W01 W02 W03 W04 Total=26 # BEAM-3:175 :: C00 C01 C02 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 E03 E05 E06 S01 S02 S03 S04 W01 W02 W03 W04 Total=26 --------------------------------------------------------------------------- 14:39 : GWB shows strong spike at 350MHz (Source : 625D+012R31). -------------------------------------------------------------------------- 15:17 : C09 servo problem. -------------------------------------------------------------------------- 16:35 : C09 started working. -------------------------------------------------------------------------- 17:00 : Stopped command file and observation session over.