GTAC Observation Log 1. Date : 25/01/2021 2. Observation Sr. No. : 12833 3. Observer : Narendra Nath Patra, Nirupam Roy, Prerana Biswas, Mousumi Das, Juliana Saponara 4. Observer\'s Email : naren.ncra@gmail.com, roy.nirupam@gmail.com, prerana.biswas1994@gmail.com, chandaniket@gmail.com, juliana.saponara@gmail.com 5. Project Name : HI observation of dark matter deficient galaxies 6. Project Code : 39_064 7. Operator(s) : Pramod 8. Command File : /data1/gtac/cmd/39_064/24jan21/39_064_24jan21.py 9. LTA File : /gsbifrdata1/24jan/39_064_24jan2021_gsb.lta, /gwbifrdata1/24jan/39_064_24jan2021_gwb.lta 10. LogFlag File : ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1406.7501 MHz ,RF2 : 1406.7501 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1345 MHz, ILO2 : 1345MHz , IVLO1 : 61.7501 MHz, IVLO2 : 61.7501 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+14 dB, 16 MHz,ON, IF-CH2 : 4+14 dB, 16 MHz,ON GSB SETTINGS : 14. GSB Host : gsbm1_shivneri 15. GSB Mode : Realtime 16. GSB LTA : 8 17. GSB CTRL : ONLINE/TGC 18. GSB Fstop : ON 19. GAIN EQ : ON 20. Stokes : Total_Intensity 21. Beam - 1 : OFF 22. Beam - 2 : OFF 23. ACQ BW : 16.666666 MHz 24. Final BW : 41666665 MHz; Step # 0 25. Maximum Channels : 512 26. Channel Numbers : 0:511:1 27. LO5 -1 : 138.2499 28. LO5 -2 : 166.7501 29. Frequency Parameters (TPA) : 1406.7501 1406.7501 1345 1345 61.7501 61.7501 30. Integration Time : 8.053 Sec 31. No of Antennas Working(Fringing) at the beginning :28 32. Name of Non-Working Antennas (with reason for each) : C03 : Mechanical Work. C06 : LMC is disconnected 33. Note for Backup : 34. Start and End Time of Obs.(IST): 24 Jan 2021 23:00:00 - 25 Jan 2021 06:00:00 35. ONLINE Machine : TGC 36. No of Antennas Working(Fringing) at the end :28 37. RFI Status : 38. Comments (During Observations) : ------------GWB Setting--------- GPU_MODE : Realtime GPU_LTA : 4 GPU_ACQ_BW : 200.0000 GPU_FINAL_BW : 200 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 4096 GPU_CHAN_NUM : 0:4095:1 GPU_STOKES : Total_Intensity GPU_SIDEBAND : 1 1 GPU_RF4 : 1460 1460 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : 39_064 GPU_CNTRL : ONLINE/TGC GPU_FSTOP : ON GPU_BEAM_1 : OFF GPU_BEAM_2 : OFF GPU_BEAM_3 : OFF GPU_BEAM_4 : OFF GPU_BM_INT : 8 GPU_GAINEQ : ON GPU_TPA : From online/TGC tpa GPU_BITS : 8 Bits GPU_FILRFI : RFI Filterring OFF GPU_BEAM_S : OFF GPU_PFB : OFF GPU_PFB_TAPS : 16 GPU_BEAM_BIT : 16 GPU_VLT_BIT : 8 GPU_ENV : RELEASED -------------------------------- ------------GSB Setting--------- GSB_MODE : Realtime GSB_LTA : 8 GSB_ACQ_BW : 16.666666 GSB_FINAL_BW : 41666665 GSB_EDGE_FRQ : 0 GSB_CHAN_MAX : 512 GSB_CHAN_NUM : 0:511:1 GSB_STOKES : Total_Intensity GSB_CNTRL : ONLINE/TGC GSB_FSTOP : ON GSB_BEAM_1 : OFF GSB_BEAM_2 : OFF GSB_GAINEQ : ON GSB_BB_LO : 138.2499:166.7501 GSB_HOSTS : gsbm1_shivneri undefined : OFF undefined : 306 undefined : RELEASED -------------------------------- From 23:00 to 00:00 : Set up done. Because delay for set up,observation started late. 00:08 : Started scan on 3C147. 00:19 : Stopped scan and started command file. \'/data1/gtac/cmd/39_064/24jan21/39_064_24jan21.py\' NOTE : Scan no 5 is bad.Hence ignore scan no 5. 05:42 : Stopped command file. 05:49 : Started scan on 3C286. 06:00 : Stopped scan and observation session is over.