|
Channel to QC
|
From the drop-down list, select the channel to inspect. Both single value and array channel may be selected. The data of the current point or array is then displayed on the graph, located at the top-right of the window.
Hotkey: While the channel entry is in focus, use the ↑↓ keys to move up and down through the channels.
|
|
Line to QC
|
From the drop-down list, select the receiver line to inspect.
Hotkeys: While the line entry is in focus, use the ↑↓ keys to move up and down through the line list.
|
|
Create/Update the pseudo-section symbol plot of the receiver electrode pair readings, along the currently selected line, filtered for the currently selected transmitter electrode pair. The pseudo-section symbols are coloured by the intensity of the current channel. If the IP array is being processed, then the symbols are coloured by the average of the IP array. The pseudo-section is linked to the IP database and the QC tool. |
|
Offset line channel
|
An offset survey consists of parallel lines where a receiver line is flanked on either side by transmitter lines. Select from the drop-down list the channel containing the transmitter line numbers that this receiver line was active for.
Hotkey: While the channel entry is in focus, use the ↑↓ keys to move up and down through the channels.
|
|
Offset Line
|
This drop-down list is automatically populated with the line numbers in the above Offset Line channel. Select the transmitter line to process. |
|
Grouping
|
For the current line and channel, the data can be sorted by station (default) or transmitter location for inspection. Select the grouping of your preference. |
|
Location
|
The position of the station/transmitter for the current data point/array, in the active coordinate system.
Use the arrow keys to move through the data, one station/transmitter location at a time.
Only raw data values are displayed. The averaged data values are skipped. The raw & averaged values are flagged respectively in the Type channel as 0 & 1.
In the case of duplicate readings, all samples are displayed. The sample in focus is outlined. The average of the accepted samples is displayed on the graph in grey. The initial state is to accept all values. Accepted values are shown in green.
Hotkeys: Use the → & ← key strokes to move easily in the grouping through the stations/transmitters.
|
|
Configuration
|
If the configuration is not predefined, enter it can be selected here. |
|
N
A
|
The data displayed on the graph is further grouped by N values. Finally, the data is sorted by A values calculated from the transmitter/receiver separations.
In cases where the N value is undefined, sorting is done solely by station (or transmitter) number.
Hotkeys: Simultaneously use the Ctrl_→ & Ctrl_← key strokes to move through the data points.
Alternatively, when the N entry is in focus, use the H & N keys to move through the N value.
|
|
Data point
|
The index of the data element indicated with a cursor on the graph. For normal channels, this is just 1 of 1, but for array channels, it gives the window number, starting with an index of 1 (unlike array indices in the database, which begin at 0).
If multiple samples coincide - that is, if they have the same Station & N values - they will all be displayed. To select any one of the coinciding samples, click on the desired sample in the table located at the bottom of the dialog window. The selected sample will be outlined in black on the graph.
|
|
Data value
|
The current value at the displayed index. This entry is editable.
Once the line or channel is changed, changes are committed to the database, even if Cancel is subsequently used to exit the Quality Control Tool.
|
|
Mask selected
|
This check box becomes active only if the inspected channel is an array channel. It allows you to set the state of individual elements in the array. |
|
QC channel
|
Two QC mask channels are provided (QC IP and QC Resistivity). By default, all values are accepted. It is recommended to use the QC mask channel to reject bad readings. The points on the graph are colour coded according to the selected QC channel. For Zonge Field data (FLD), the recorded QC data is loaded into the QC IP channel.
|
|
Acceptance
|
The data value or entire array in focus can be Accepted, Flagged or Rejected. The selected QC channel value reflects the user choice as:
Accepted → 1 - These values are used in all calculations
Flagged → 2 - These are ignored in calculations, but annotated in square brackets on pseudo-sections
Rejected → * - These values are always ignored
To flag values as [TN], set the data value to –9999 and set the QC to Flag.
Hotkeys: Use A, F and R to Accept, Flag and Reject samples.
|
|
Recalculate
|
Click on the Recalculate button to push the current changes made in the QC tool to the database. |
|
|
Push the updates in the database to the QC tool. |
|
Plan graph
|
The plan graph indicates the locations of the electrodes being examined. This graph is linked to the data graph in the same window as well as to the database and potentially, the open pseudo-section map. |
|
Sample table
|
The table along the bottom of the QC tool shows the relevant channel values of the currently selected sample. All duplicate samples are displayed in this table. The sample that is currently in focus is bolded. Clicking on the desired sample in the table will move the focus to the selected row. |
|
Graph
|
The vertical scale is scaled relative to the data in focus. You can fix the scale by checking the Fix box. Both the minimum and maximum values of the data range are editable.
The mouse may be used to select individual samples and windows in the graph.
When looking at an IP array, you can select multiple array elements by holding the Ctrl key down. Selected points are highlighted. The same masking can then be applied to all the selected points.
|
