# # 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} : VS08u {Your family name} : HORIUCHI {Your given name} : Shinjii {The date you prepared this document (format is day-month-year, e.g 23-04-1999)} : 10-12-2001 {The name of the survey source that was observed} :J0309-6058 {The name of the calibration source(s) observed} : J0303-62, J0635-75 {The year the experiment took place (e.g. 1998)} : 2001 {The starting day number of the experiment} : 155 {List the GRTs that observed} : HA, HO, MP {List the tracking stations that took part} : RZ {Which correlator was used to correlate the data? (Mitaka/Penticton/Socorro)} : Penticton {AIPS Version used (e.g 15OCT98)} : 12DEC00 {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} : This is one of problematical experiments correlated after March 2001, same as vs01s, vs07p, vs09c, vs09p, which suffer significantly lower amplitude, about factor 10 or so, in AIPS comparing DQA1 plots provided by Penticton. We have not yet solved this problem. These data were first correlated with 32 channels/IF. I requested for vs08u to be re-correlated with 128ch/IF but no change in amplitude was observed either in AIPS or DQA1 from previous amplitudes in each system. Fringes were detected during most of the run for all baselines. Applying thses solutions without gain-tsys correction, VPLOT in AIPS with averaging all channels provided the amplitude about 5*10^(-5) Jy for HA-MP baselines around 2UT, while DQA1 amplitude was 8*10^(-4) Jy. Assuming DQA provided right amplitude, I multiply sqrt(80/5) = 4 for each antenna in AIPS by CLCOR prior to ANTAB, APCAL etc. to adjust amplitude to that of DQA1. Tsys information obtained during the experiment was available for HA and HO. Nominal information was applied for Halca and MP. HO was flagged by FG table generated by FITLD, but ASIP-FRING provided good solution for this antenna with FLAGVER=-1. However it turned out that HO was showing remakable low amplitude, about factor 10. I would not be surprized because there was a report in PI-letter on high error rate: "HO transport #3 showed high error rates and was dropped from correlation. This caused DATA VALID to be low for baselines including HO. Data is probably still ok though". I do not know what causes this problem. I multiply additional sqrt(10) for HO in AIPS by CLCOR to reproduce reasonable amplitude for HO-HA baseline which is to be comparable to MP-HA amplitude. However signal/noise ratio was so low for HO baselines and I ended up with flagging HO data in difmap. Except HO the data looked OK including amplitude as one gaussian-like structure, though no published image was available to compare. EBF 12-OCT-2005: Single gaussian fit is 0.784875v 0.0125572v 7.83403v 0.598912v 0.309109v 33.9491v 1 Two component fit is better and more compatible with image. Unclear which is core. #--------------------------------------------------------------------------- # 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)} : no {Light-curve data retrieved? (yes/no)} : no # Input files for INDXR, ANTAB and UVFLG {Has a INDXR input file (INDXR.TXT) been created? (yes/no)} : no {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)} : yes {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)} : 3 {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} :VS08U.ANTAB {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} : {Input CL} : {Input SN} : {Output SN} : {Output CL} : {Comments} : #--------------------------------------------------------- #--------------------------------------------------------- {Task} : INDXR {ADVERBs} : {Input CL} : {Input SN} : {Output SN} : {Output CL} : {Comments} : #--------------------------------------------------------- #--------------------------------------------------------- {Task} : FRING {ADVERBs} : Solint=5, APARM(7)=3, DPARM=1,50, 50, 0, REFANT=3, flagver=-1 {Input SN} : {Output SN} : 7 {Output CL} : {Comments} : #--------------------------------------------------------- #--------------------------------------------------------- {Task} : CLCAL {ADVERBs} : {Input CL} : 1 {Input SN} : 7 {Output SN} : {Output CL} : 5 {Comments} : SMOTY 'VLBI" #--------------------------------------------------------- #--------------------------------------------------------- {Task} : TACOP {ADVERBs} : {Input CL} :5 {Input SN} : {Output SN} : {Output CL} :6 {Comments} : #--------------------------------------------------------- #--------------------------------------------------------- {Task} : CLCOR {ADVERBs} :OPCODE = 'GAIN',CLPARM = 4.00000E+00, 0.00000E+00, 0.00000E+00 / Gain curve {Input CL} : {Input SN} : {Output SN} : {Output CL} : 6 {Comments} : To adjust AIPS amplitudes to DQA1 ones. #--------------------------------------------------------- #--------------------------------------------------------- {Task} : ANTAB {ADVERBs} : {Input CL} : {Input SN} : {Output SN} : {Output CL} : {Comments} : TY1, GC1 are generated. #--------------------------------------------------------- #--------------------------------------------------------- {Task} : APCAL {ADVERBs} : {Input CL} : {Input SN} : {Output SN} :8 {Output CL} : {Comments} : #--------------------------------------------------------- #--------------------------------------------------------- {Task} : CLCAL {ADVERBs} : {Input CL} : 6 {Input SN} : 8 {Output SN} : {Output CL} : 7 {Comments} : SMOTY 'AMPL" #--------------------------------------------------------- #--------------------------------------------------------- {Task} : TACOP {ADVERBs} : {Input CL} :7 {Input SN} : {Output SN} : {Output CL} :8 {Comments} : #--------------------------------------------------------- #--------------------------------------------------------- {Task} : CLCOR {ADVERBs} :ANTAN=2, OPCODE = 'GAIN',CLPARM = 3.16228E+00, 0.00000E+00, 0.00000E+00 / Gain curve {Input CL} : {Input SN} : {Output SN} : {Output CL} : 8 {Comments} : To correct low amplitude of HO so that HA-MP and HA-HO amplitudes are about the same. #--------------------------------------------------------- #--------------------------------------------------- {Task} : SPLIT {ADVERBs} : {Input CL} : 8 {Input SN} : {Output SN} : {Output CL} : {Comments} : #--------------------------------------------------------- #--------------------------------------------------------- {Task} : FITTP {ADVERBs} : {Input CL} : {Input SN} : {Output SN} : {Output CL} : {Comments} : #--------------------------------------------------------- #--------------------------------------------------------------------------- # 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 no used} :HO was flagged in difmap because of low SNR. The data was fitted with one faussian model. EBF 12-OCT-2005: Single gaussian fit is 0.784875v 0.0125572v 7.83403v 0.598912v 0.309109v 33.9491v 1 Two component fit is better and more compatible with image. Unclear which is core. #--------------------------------------------------------------------------- # Do not delete or alter anything past this line {VSOP Survey Checklist and Worksheet version} : 0.3 #--------------------------