GTAC Observation Log 1. Date : 15/07/2017 2. Observation Sr. No. : 9573 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) : Pramod, Surender 8. Command File : /odisk/gtac/cmd/32_032/obs_15jul17.txt 9. LTA File : /gsbifrdata/15jul/32_032_15jul2017.lta, /gwbifrdata/15jul/32_032_15jul2017_gwb.lta, /gwbifrdata/15jul/32_032C_15jul2017_gwb.lta, /gwbifrdata/15jul/32_032B_15jul2017_gwb.lta 10. LogFlag File : /odisk/online1/logflags/32_032C.FLAGS.4, /odisk/online1/logflags/32_032B.FLAGS.14, /odisk/online1/logflags/32_032.FLAGS.15 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 : 8.053 Sec 31. No of Antennas Working(Fringing) at the beginning :29 32. Name of Non-Working Antennas (with reason for each) : W03 : Strong RFI 33. Note for Backup : 34. Start and End Time of Obs.(IST): 15 Jul 2017 12:00:00 - 15 Jul 2017 16:00:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :28 37. Comments (During Observations) : 11:00 : Started set up. # 325MHz # sub 2 # C01 C04 C06 W01 S01 ante 5 6 3 20 8 26 cp 0;defs 2;subar 2 # 610MHz # sub 3 # C02 C03 C09 W02 E03 S02 ante 6 5 1 4 13 18 27 cp 0;defs 3;subar 3 # 1420MHz # sub 4 # C00 C05 C08 C10 C11 C12 C13 C14 W03 W04 W05 W06 E02 E04 E05 E06 S03 S04 S06 ante 19 7 19 24 12 9 2 11 10 14 15 16 25 17 21 22 23 28 29 30 cp 0;defs 4;subar 4 --------------------------------------------------------------------------- ------------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_RF2 : 500 500 GPU_DDCLO2 : 0.0000 0.0000 GPU_SB2 : 1 1 GCODE2 : 32_032B GPU_RF3 : 850 850 GPU_DDCLO3 : 0.0000 0.0000 GPU_SB3 : 1 1 GCODE3 : 32_032C GPU_RF4 : 1460 1460 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : 32_032 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 :: C00 C05 C08 C10 C11 C12 C13 C14 E02 E04 E05 E06 S03 S04 S06 W04 W05 W06 Total=18 # BEAM-2:175 :: C00 C05 C08 C10 C11 C12 C13 C14 E02 E04 E05 E06 S03 S04 S06 W04 W05 W06 Total=18 # BEAM-3:130 :: C02 C03 C09 E03 S02 W02 Total=6 # BEAM-3:175 :: C02 C03 C09 E03 S02 W02 Total=6 # BEAM-4:130 :: Total=0 # BEAM-4:175 :: Total=0 ----------------------------------------------------- ----------------------------------------------------- 11:40 : Power equalized and phasing done on 3C147. 11:48 : Started command file. '/odisk/gtac/cmd/32_032/obs_15jul17.txt' 12:36 : E04 Removed from GAC due to servo problem. 14:51 : Stopped command file and observation session is over.