PTI V2 Data Products
Calibrated V2 Output Description
Calibrated wide-band V2 data files are text files that areproduced by the MSC V2 calibration applicationwbCalib. Thefollowing gives an example of the output of wbCalib in default mode:# option Kband# 1 command line arguments processed# >> Calibrating star HDC102713 at 11 49 41.715 +34 55 54.329 # >> with respect to 1 calibrators: # >> star HDC101501 at 11 41 03.017 +34 12 05.888 size 0.9 error 0.06 1.9 degrees away from target# Wideband calibration code settings for this run: # > Calibrating only K-band (rejecting others at read)# > Calibrating all frame rates# > Calibrating incoherent spectrometer V2 data# > Applying jitter correction# > Using calibration scans within +/- 1 hr of the target scan# > Weighting calibration scans WRT temporal proximity, variance doubles in 1 hr# > Weighting calibration scans WRT sky proximity, variance doubles in 15 deg# > No minimum calibrated scan uncertainty# > Flagging calibration warnings when multiple calibrators disagree by more than 2 sigma# > Rejecting the scan when multiple calibrators disagree by more than 3 sigma# 246 data lines read from /home/bode/pti/data/100/100074.sum# 295 data lines read from /home/bode/pti/data/100/100075.sum# 356 data lines read from /home/bode/pti/data/100/100076.sum...# Calibration data format:# name #VisPts MJD m/d/y/h:m:s UT Delay(m) WL(um) \> CalVis Err RawVis Err SysVis Err #Cal \> U(m) V(m) HA(hr) FrameRate BLName# Target HDC102713:HDC102713 5 51618.30862 3/15/100/7:24:24 7.40684 -18.4294 2.2078 \> 0.628617 0.0181397 0.550502 0.0105877 0.875735 0.0188394 1 \> -46.877792 -99.115972 -0.66552 50 PTI_NSHDC102713 5 51618.32589 3/15/100/7:49:16 7.82132 -14.5302 2.2072 \> 0.533166 0.0158086 0.46699 0.00989155 0.87588 0.0181731 1 \> -40.930193 -101.853953 -0.249901 50 PTI_NSHDC102713 5 51618.35305 3/15/100/8:28:23 8.47326 -9.49788 2.2044 \> 0.435681 0.0118706 0.377309 0.00526829 0.866021 0.0202618 1 \> -30.624757 -105.368530 0.403829 50 PTI_NS...# 161 calibrated scans output under name HDC102713# 161 total calibrated scans output on target HDC102713The first section of the output is an extended preamble (with commentlines indicated by # symbols) containing the following pieces:
- Indications of any option flags that were passed to wbCalib
- What sources will be calibrated with respect to what calibrators
- A summary of how the data is to be calibrated -- a summary of the settings for this run
- A summary of where the input data is being found
- A template line giving the format of the data to follow
| field# | content | comments |
|---|---|---|
| 1 | Target Designation | Target Designation (string) |
| 2 | # SUM Records | # of sum records averaged into this target scan (integer) |
| 3 | MJD | Modified Julian Date (day) (float) |
| 4 | UTC Date/Time | UTC Date/time in mm/dd/yy/hh:mm:ss format (string) |
| 5 | UTC | UTC Time (decimal hours) (float) |
| 6 | Delay | Average delay (m) (float) |
| 7 | Wavelength | SNR-weighted mean wavelength for scan (microns) (float) |
| 8 | CalVis | Calibrated wide-band visibility (dimensionless) |
| 9 | ErrVis | Std Error in calibrated visibility (dimensionless) |
| 10 | RawVis | Raw (L-1) wide-band visibility (dimensionless) |
| 11 | ErrRawVis | Std error in raw wide-band visibility (dimensionless) |
| 12 | SysVis | Estimated system visibility (dimensionless) |
| 13 | ErrSysVis | Std Error in estimated system visibility (dimensionless) |
| 14 | # Cals | Number of calibrators used in calibrating this scan (integer) |
| 15 | uCoord | u * lambda -- RA baseline projection (m) (float) |
| 16 | vCoord | v * lambda -- Dec baseline projection (m) (float) |
| 17 | HRangle | Hour angle on target for this scan (decimal hours) (float) |
| 18 | Frame Rate | Frame rate for this scan (Hz) (integer) |
| 19 | Baseline | Baseline designation for this scan (e.g. PTI_NS) (string) |