KI Nulling Data Products
Calibrated Nulling Output Description
Calibrated wide-band Nulling data files are text files that are
produced by the calibration application nullCalib, part of
the V2Calib package.
The 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
The
second section of the file contains a list of calibrated output data.
For each specified target/pseudonym there is a designation header, and
then a sequence of space delimited data lines. The contents of these
data lines is described by the following table:
|
field# |
content |
comments |
|---|---|---|
|
1 |
Target Designation |
Target Designation (string) |
|
2 |
# NULLSUM Records |
# of null sum records averaged into this target scan (integer) |
|
3 |
MJD |
Modified Julian Date (day) (float) |
|
4 |
UTC Date/Time |
UTC Date/time in dd/mm/yyyy/hh:mm:ss format (string) |
|
5 |
UTC |
UTC Time (decimal hours) (float) |
|
6 |
Delay |
Average delay (m) (float) |
|
7 |
Effective Broadband Wavelength |
Effective Broadband wavelength (microns) (float) |
|
8 |
CalNull |
Calibrated wide-band null (dimensionless) |
|
9 |
ErrNull |
Std Error in calibrated null (dimensionless) |
|
10 |
RawNull |
Raw (L-1) wide-band null (dimensionless) |
|
11 |
ErrRawNull |
Std error in raw wide-band null (dimensionless) |
|
12 |
SysNull |
Estimated system null (dimensionless) |
|
13 |
ErrSysNull |
Std Error in estimated system null (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 |
Duration |
Duration of measurement (sec) |
|
19 |
Baseline |
Baseline designation for this scan (e.g. KI_K1K2) (string) |