GTAC Observation Log 1. Date : 17/12/2017 2. Observation Sr. No. : 9960 3. Observer : BHAL CHANDRA JOSHI, ARUN KUMAR NAIDU, Vishal R Gajjar, Geoffrey Wright 4. Observer's Email : bcj@ncra.tifr.res.in, arun@ncra.tifr.res.in, vishalg@berkeley.edu, geoffrey.wright@manchester.ac.uk 5. Project Name : Study of post null sub-pulse memory in the new coherent drifter PSR J 0934-5249 at multiple frequencies with uGMRT 6. Project Code : 33_047 7. Operator(s) : Nilesh 8. Command File : /odisk/gtac/cmd 9. LTA File : /gwbifrdata1/17dec/33_047_950lo_16dec2017_gwb.lta.1, /gwbifrdata1/17dec/33_047_950lo_16dec2017_gwb.lta, /gwbifrdata1/17dec/33_047_500lo_16dec2017_gwb.lta.1, /gwbifrdata1/17dec/33_047_500lo_16dec2017_gwb.lta, /gwbifrdata1/17dec/33_047_1460lo_16dec2017_gwb.lta.1, /gwbifrdata1/17dec/33_047_1460lo_16dec2017_gwb.lta 10. LogFlag File : /odisk/online1/logflags/33_047C.FLAGS, /odisk/online1/logflags/33_047B.FLAGS, /odisk/online1/logflags/33_047.FLAGS 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 : 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) : 306 306 255 255 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) : E04 : Low self, and low fringe. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 17 Dec 2017 02:00:00 - 17 Dec 2017 06:00:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :29 37. Comments (During Observations) : 01:00 : Started settings. ------------GWB Setting--------- GPU_MODE : Realtime GPU_LTA : 16 GPU_ACQ_BW : 400.0000 GPU_FINAL_BW : 400.0000 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 8192 GPU_CHAN_NUM : 0:8191:1 GPU_STOKES : Total_Intensity GPU_SIDEBAND : 1 1 GPU_RF2 : 950 950 GPU_DDCLO2 : 0.0000 0.0000 GPU_SB2 : 1 1 GCODE2 : 33_047B GPU_RF3 : 1460 1460 GPU_DDCLO3 : 0.0000 0.0000 GPU_SB3 : 1 1 GCODE3 : 33_047C GPU_RF4 : 500 500 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : 33_047 GPU_CNTRL : ONLINE GPU_FSTOP : ON GPU_BEAM_1 : PA GPU_BEAM_2 : PA GPU_BEAM_3 : PA GPU_BEAM_4 : IA GPU_BM_INT : 32 GPU_GAINEQ : OFF GPU_TPA : From GWB GUI. -------------------------------- Subar 4 : Band 3 (250-500 MHz) Antennae: C00 C01 C04 C06 C08 C09 C10 C12 Ref : C09 = 8 RF : 250-500 MHz WB feed, RF ON, NG OFF GAB : 400 MHz ALC OFF Ist LO : 500 MHz Backend to be used : GWB4 TPA : Manual (Set so as to get band from 300 to 500 MHz) 500 500 570 570 70 70 SIDEBAND : LSB (+1) Beam1 : PA (1) Beam Integ : 32 (650 us) GAC Config : C00 C01 C04 C06 C08 C09 C10 C12 Optical Fibre : Attn. of 12 dB for the OFC. Subar 3 : Band 5 (1100-1500 MHz) Antennae: C03 C05 C11 C13 C14 W01 W02 E02 S01 S02 Ref : C05 = 10 RF : 1100-1500 MHz WB feed, RF ON, NG OFF GAB : 400 MHz ALC OFF Ist LO : 1460 MHz Backend to be used : GWB4 TPA : Manual (Set so as to get band from 1060 to 1460 MHz) 1460 1460 1530 1530 1570 70 70 SIDEBAND : LSB (+1) Beam2 : PA (2) Beam Integ : 32 (650 us) GAC Config : C03 C05 C11 C13 C14 W01 W02 E02 S01 S02 Optical Fibre : Attn. of 5 dB for the OFC. Subar 2 : Band 4 (550-950 MHz) Antennae: C02 W03 W04 W05 W06 E03 E04 E05 E06 S03 S04 S06 Ref : C02 = 12 RF : 550-950 MHz WB feed, RF ON, NG OFF GAB : 400 MHz ALC OFF Ist LO : 950 MHz Backend to be used : GWB4 TPA : Manual (Set so as to get band from 550 to 950 MHz) 950 950 1020 1020 70 70 SIDEBAND : LSB (+1) Beam3 : PA(3) Beam Integ : 32 (650 us) GAC Config : C02 W03 W06 E03 E05 E06 S02 S03 S06 Beam4 : IA(4) Beam Integ : 32 (650 us) GAC Config : C02 W03 W06 E03 E05 E06 S02 S03 S06 Optical Fibre : Attn. of 9 dB for the OFC. # GWB GAC configuration is as follows : # BEAM-1:130 :: C00 C01 C04 C06 C08 C09 C10 C12 Total=8 # BEAM-1:175 :: C00 C01 C04 C06 C08 C09 C10 C12 Total=8 # BEAM-2:130 :: C03 C05 C11 C13 C14 E02 S01 S02 W01 W02 Total=10 # BEAM-2:175 :: C03 C05 C11 C13 C14 E02 S01 S02 W01 W02 Total=10 # BEAM-3:130 :: C02 E03 E05 E06 S03 S04 S06 W03 W04 W05 W06 Total=11 # BEAM-3:175 :: C02 E05 E06 S03 S04 S06 W03 W04 W05 W06 Total=10 # BEAM-4:130 :: C02 E03 E05 E06 S03 S04 S06 W03 W04 W05 W06 Total=11 # BEAM-4:175 :: C02 E05 E06 S03 S04 S06 W03 W04 W05 W06 Total=10 01:40 : Started phasing on 0837-198. 01:44:50 : Started scan on 0837-198 for ~ 5.18975 min. 01:50:33 : Started scan on 0837-198 for ~ 3.22122 min. 01:55:01 : Started scan on 0837-198 for ~ 20.759 min. 02:23:59 : Started scan on 3C147 for ~ 3.93705 min. 02:28:17 : Started scan on 3C147 for ~ 1.78957 min. 02:28:17 : Started scan on 3C147 for ~ 2.86331 min. 02:34:10 : Started scan on 3C147 for ~ 4.83183 min. 02:40:30 : Started scan on 3C147 for ~ 6.6214 min. 02:55:04 : Started scan on 0837-198 for ~ 4.65288 min. 03:00:19 : Started scan on 0837-198 for ~ 21.6538 min. 03:22:52 : Started scan on 0837-198 for ~ 4.29496 min. 03:30:09 : Started scan on B0932-52 for ~ 51.0027 min. 04:22:50 : Started scan on 0837-198 for ~ 5.18975 min. 04:28:42 : Started scan on 0837-198 for ~ 1.43165 min. 04:32:09 : Started scan on B0932-52 for ~ 49.571 min. 05:30 : Closed observations.