# # Template Checklist and Worksheet for reduction of VSOP Survey data. # (http://halca.vsop.isas.ac.jp/survey/template_checklist.txt) # # Version 0.3 - J. Lovell 14-Apr-1999 # # NOTE: Copy this file to your data reduction outputs directory (e.g # /something/vs05a_jones) and name it "checklist.txt" # # Comments are given on lines beginning with a # and questions are # enclosed in {}'s. # Please enter responses after the colons. # Multiple-line responses are OK. # Yes/No questions may be answered with "yes", "no", "Y", "N", "y" or "n" # An example of a completed Checklist is given in # http://halca.vsop.isas.ac.jp/survey/checklist_eg.txt # # #--------------------------------------------------------------------------- # Section 1 : General Information #--------------------------------------------------------------------------- {Experiment code} : VS03v {Your family name} : Shen {Your given name} : Zhi-Qiang {The date you prepared this document (format is day-month-year, e.g 23-04-1999)} : 06-07-1999 {The name of the survey source that was observed} : J2246-12 {The name of the calibration source(s) observed} : 2145+067 {The year the experiment took place (e.g. 1998)} : 1998 {The starting day number of the experiment} : 154 {List the GRTs that observed} : Mop, Seshan25 {List the tracking stations that took part} : NZ, UZ {Which correlator was used to correlate the data? (Mitaka/Penticton/Socorro)} : Penticton {AIPS Version used (e.g 15OCT98)} : 15OCT98 {Difmap Version used (e.g 2.3c)} : 2.3c {Was vsop_difmap used? (yes/no)} : yes {Abstract. Write a brief summary of the data reduction and its outcomes} : Fringes were detected throughout experiment on all 3 baselines (including 2 ground-space baselines). For ground-space baselines, good fringes were found for both NZ pass (16:00 -- 19:15 UT) and UZ pass (21:17 -- 23:00 UT). Both imaging and modelfitting went very well even though only 3 baselines were available. Calibration source (2145+067) was observed about 18 min and, detected with a correlated flux density of 1.4Jy on the ground baseline (Mop-Seshan25, 6,700km). #--------------------------------------------------------------------------- # Section 2 : Pre-AIPS Checklist #--------------------------------------------------------------------------- {PI letter retrieved (yes/no)} : yes {Data quality reports and plots retrieved? (yes/no)} : yes {Pre-launch 5GHz survey data retrieved? (yes/no)} : yes {Light-curve data retrieved? (yes/no)} : yes # Input files for INDXR, ANTAB and UVFLG {Has a INDXR input file (INDXR.TXT) been created? (yes/no)} : yes {Has a ANTAB input file (ANTAB.TXT) been created? (yes/no)} : yes {Has a UVFLG input file (UVFLG.TXT) been created? (yes/no)} : no {Any comments on Pre-AIPS file preparation?} : #--------------------------------------------------------------------------- # Section 3 : AIPS Output File Checklist # # Names of expected output file names are contained in square brackets. #--------------------------------------------------------------------------- {PRTAN [PRTAN.LIS] (yes/no)} : yes {LISTR (optyp = 'SCAN') [LISTR.LIS] (yes/no)} : yes {DTSUM (aparm = 0) [DTSUM_0.LIS] (yes/no)} : yes {DTSUM (aparm = 1) [DTSUM_1.LIS] (yes/no)} : yes {UVPLT (u vs v) [UVPLT_UV.PS] (yes/no)} : yes {UVPLT ((u,v) distance vs time) [UVPLT_UVD.PS] (yes/no)} : yes {UVPLT ((u,v) position angle vs time). [UVPLT_UVPA.PS] (yes/no)} : yes {VPLOT antenna weights vs time (after adjustment) [WEIGHTS.PS] (yes/no)} : no {ACCOR SNPLT (amplitude), IF 1 [SN_ACCOR_1.PS] (yes/no)} : no {IF 2 [SN_ACCOR_2.PS] (yes/no)} : no {APCAL SNPLT (amplitude), IF 1 [SN_APCAL_1.PS] (yes/no)} : yes {IF 2 [SN_APCAL_2.PS] (yes/no)} : yes # FRING SNPLT (delay, rate, SNR), as many as necessary to document the # clear discovery of fringes at all antennas, numbered with "nn" for # both IFs. Do NOT include the final SN table as it is plotted later. # # Format is SN_FRINGnn_DEL_i.PS, SN_FRINGnn_RAT_i.PS, # SN_FRINGnn_SNR_i.PS for delay, rate and SNR plots respectively, # where "i" is the IF number (1 or 2). {Number of times preliminary FRING solutions were plotted (i.e maximum value of nn)} : 2 {Post-FRING CALIB SNPLT, Phase: IF 1 [SN_CALIB_PHA_1] (yes/no)} : yes {IF 2 [SN_CALIB_PHA_2] (yes/no)} : yes {Delay: IF 1 [SN_CALIB_DEL_1] (yes/no)} : yes {IF 2 [SN_CALIB_DEL_2] (yes/no)} : yes {Rate: IF 1 [SN_CALIB_RAT_1] (yes/no)} : yes {IF 2 [SN_CALIB_RAT_2] (yes/no)} : yes {SNR: IF 1 [SN_CALIB_SNR_1] (yes/no)} : yes {IF 2 [SN_CALIB_SNR_2] (yes/no)} : yes {Post-calibration VPLOT (amp and phase, with channel averaging) IF 1 [VPLOT_AP_1.PS] (yes/no)} : yes {IF 2 [VPLOT_AP_1.PS] (yes/no)} : yes {Post-calibration POSSM (amplitude and phase, at least one 5 to 10 min integration spectrum per tracking pass, indexed with nn = 01, 02, 03, ...), IF 1 [POSSMnn_AP_1.PS] (yes/no)} : yes {IF 2 [POSSMnn_AP_2.PS] (yes/no)} : yes {Output TASAV FITS file (containing all 'multisource' cal tables) [VSxxx__TASAV.FITS] (yes/no)} : yes {Calibrated and spectrally averaged FITS data files (one for each source), [__AIPS.FITS] (yes/no)} : yes #--------------------------------------------------------------------------- # Section 4 : Supplementary files # # Were any files created, other than those listed, to document the data # reduction? If so, please list them below using as many (File, Description) # groups as required. #--------------------------------------------------------------------------- #--------------------------------------------------------- {File} : {Description} : #--------------------------------------------------------- #--------------------------------------------------------------------------- # Section 5 : AIPS data-reduction notes # # The format is as follows: # # Task : the name of the task that is run or other operation performed # ADVERBs : a list of the relevant non-default adverbs # Input CL : the input calibration table used (if any) in running the task # Input SN : the SN table that was used (if any) # Output SN : the SN table produced (if any) # Output CL : the CL table produced or modified (if any) # Comments: any comments on the results of the operation # # Use as many of the (Task, ADVERBs, Comments, Input CL, Input SN, # Output SN, Output CL) groups as required. #--------------------------------------------------------------------------- #--------------------------------------------------------- {Task} : FITLD {ADVERBs} : douvcomp=1;dotable=1 {Input CL} : {Input SN} : {Output SN} : {Output CL} : {Comments} : load the uv FITS data from tape to AIPS disk #--------------------------------------------------------- {Task} : MSORT {ADVERBs} : sort='TB' {Input CL} : {Input SN} : {Output SN} : {Output CL} : {Comments} : sort the data to 'TB' order #--------------------------------------------------------- {Task} : INDXR {ADVERBs} : cparm(3)=1 {Input CL} : {Input SN} : {Output SN} : {Output CL} : 1 {Comments} : index uv data with 1 min CL entry interval #--------------------------------------------------------- {Task} : TACOP {ADVERBs} : {Input CL} : 1 {Input SN} : {Output SN} : {Output CL} : 2 {Comments} : protect original CL1 #--------------------------------------------------------- {Task} : ANTAB {ADVERBs} : {Input CL} : {Input SN} : {Output SN} : {Output CL} : {Comments} : determine the Tsys and gain curve (see ANTAB.TXT file), Tsys=95K for Halca #--------------------------------------------------------- {Task} : APCAL {ADVERBs} : opcode=' ' {Input CL} : {Input SN} : {Output SN} : 1 {Output CL} : {Comments} : generate an amplitude calibration solution table #--------------------------------------------------------- {Task} : CLCAL {ADVERBs} : opcode='CALI' interpol=' ' refant=0 {Input CL} : 2 {Input SN} : 1 {Output SN} : {Output CL} : 3 {Comments} : apply amplitude calibration solution #--------------------------------------------------------- {Task} : CLCOR {ADVERBs} : opcode='SBDL' antenna=2;clcorprm=-45,-45,0;timer=0 (antenna=1;clcorprm=300,300,0;timer=0,0,0,0,0,20,0,0) (antenna=1;clcorprm=130,130,0;timer=0,20,0,0,0,0,0,0) {Input CL} : 3 {Input SN} : {Output SN} : {Output CL} : 3 {Comments} : Add a delay to each IF residual delays. This was determined by earlier trial runs of FRING. Note there was a gap in delay for Halca between the NZ and the UZ tracking periods. #--------------------------------------------------------- {Task} : FRING {ADVERBs} : docalib=1 flagv=1;solint=4;antwt=0 aparm=2,0,0,0,0,1,2,0 dparm=1,200,0;refant=3 (dparm=1,100,200,0;refant=2) {Input CL} : 3 {Input SN} : {Output SN} : 4(9) {Output CL} : {Comments} : run FRING 2 times with different searching windows (dparm) and different reference antennas (refant) #--------------------------------------------------------- {Task} : CLCAL {ADVERBs} : opcode='CALP';interpol='AMBG';smotype='VLBI' refant=2;timer=0,0,0,0,0,17,0,0 cals=sour='J2246-12' {Input CL} : 3 {Input SN} : 9 {Output SN} : {Output CL} : 8 {Comments} : apply solutions to specified dataset #--------------------------------------------------------- {Task} : CLCAL {ADVERBs} : opcode='CALP';interpol='AMBG';smotype='VLBI' refant=2;timer=0,17,0,0,0,19,30,0 cals=sour='J2246-12' {Input CL} : 3 {Input SN} : 4 {Output SN} : {Output CL} : 8 {Comments} : apply solutions to specified dataset #--------------------------------------------------------- {Task} : CLCAL {ADVERBs} : opcode='CALP';interpol='AMBG';smotype='VLBI' refant=2;timer=0,19,30,0,0 cals=sour='J2246-12' (cal=sour='2145+067') {Input CL} : 3 {Input SN} : 9 {Output SN} : {Output CL} : 8 {Comments} : run 2 times (once for each source) #--------------------------------------------------------- {Task} : TACOP {ADVERBs} : {Input CL} : 8 {Input SN} : {Output SN} : {Output CL} : 9 {Comments} : protect CL9 #--------------------------------------------------------- {Task} : CLCOR {ADVERBs} : antenna=0;opcode='GAIN';clcorprm=0.91,0 {Input CL} : 9 {Input SN} : {Output SN} : {Output CL} : 9 {Comments} : Penticton gain correction #--------------------------------------------------------- {Task} : TASAV {ADVERBs} : {Input CL} : {Input SN} : {Output SN} : {Output CL} : {Comments} : copy all extension tables to a dummy file #--------------------------------------------------------- {Task} : SPLIT {ADVERBs} : docalib=1;douvcomp=1;aparm=2,0,0,1,0 {Input CL} : 9 {Input SN} : {Output SN} : {Output CL} : {Comments} : make calibrated single-source data J2246-12.SPLIT and 2145+067.SPLIT #--------------------------------------------------------- {Task} : FITTP {ADVERBs} : {Input CL} : {Input SN} : {Output SN} : {Output CL} : {Comments} : export each single-source file in FITS format to disk file for further imaging analysis #--------------------------------------------------------- #--------------------------------------------------------------------------- # Section 6 : Difmap data reduction notes #--------------------------------------------------------------------------- {Phase Selfcal applied? (yes/no)} : yes {Global Amplitude Selfcal applied? (yes/no)} : no {Amplitude Selfcal applied on non-global timescales? (yes/no)} : no {Modelfit made and saved using the vs_final_mod macro? (yes/no)} : yes {Image made and saved using the vs_final_img macro? (yes/no)} : yes {Comments on Difmap processing. Include the global amplitude offsets that were applied if gscal was used} : average data over 30 sec (uvaver 30,true) raise the weight of Halca (selfant VSOP_SC,false,40) keep non-closing data during phase self-cal (selfflag false,3,4) clean and phase self-cal with uniform weighting (uvw 2,-1... etc) switch to natural weighting to clean more flux (uvw 0,-1 ... etc) no any amplitude self-cal with 3 antennas (including Halca), but check the amplitude at those uv-crossing points (no need to adjust global gains!) final image obtained with uniform weighting: peak=0.283 Jy/beam, RMS=4.0 mJy/beam; beam=0.516 mas x 0.414 mas @ -53.7 deg a 3-component model was tried to fit the calibrated data #--------------------------------------------------------------------------- # Do not delete or alter anything past this line {VSOP Survey Checklist and Worksheet version} : 0.3 #---------------------------------------------------------------------------