When the dataset is selected from the Schedule window in the
explorer, or from one of the menus in the Data Quality Control area, three
workspaces become available. They are accessed by the buttons at the top of the
screen called Quadrapoles, Electrodes and 3D View.
On the electrodes and Quadrapoles screens three menus appear
at the bottom of the workspace. These are IMPORT SYSCAL BIN, REMOVE BAD
DATAPOINTS and SAVE SCHEDULE. The import syscal menu is only active if you go
directly to this screen from the explorer. Rather
than using Input schedule under DATA INPUT of the DI Workspace click
Import Syscal File under The schedule menu on the Explorer. The
remove bad datapoints is for editing data values and is best described in the
quadrapoles description.

When a schedule file containing data has been input, either from the
data inversion (DI) workspace or the syscal import,
the quadrapole list is populated. The following columns are
visible: ID is simply a count for the data in the list. cA, cB, cM and cN are
the cable ID's for the
ABMN (quadrapole) electrodes and
A, B, M, N are the electrode numbers of the ABMN electrodes. V/I in Ohms is the
measured resistance. V/I Rec. (ohm) is the corresponding
reciprocal data point (these must be determined as described below). V
(in millivolts) is the measured primary voltage. Scrolling to the right other
columns are visible depending on exact data measured and calculated. These
columns are common:
I (in milliamperes) is the current flow, K is the geometric factor (a
multiplier used to calculate apparent
resistivity). Rho is the calculated apparent resistivity, q is a
quality control factor such as standard deviation, from the measured data (not
always present), IP is the induced polarization (not always present) and skip
is a QC column. If the skip column shows a 1 then the datapoint will be skipped
during inversion. This flag may be set manually be double-clicking the value on
the list, or automatically using the REMOVE BAD DATAPOINTS menu.

The REMOVE BAD DATAPOINTS menu allows removal (skipping) of datapoints based on
various parameters. First select the parameter, then click Remove Data. Using
the Elect. buttons you can remove based on cable ID or electrode ID. Using the
Meas. buttons you can remove based on thresholds for values such as V (measured
primary voltage), abs(V) the absolute value of measured primary, I (current
flow), abs(I), V/I (measured resistance), abs(V/I), K (geometric factor),
abs(K), Rho (apparent resistivity), abs(Rho), IP (measured induced
polarization, abs(IP), q (measured quality control indicator, abs Rec. Diff
(absolute reciprocal difference), % Rec Diff (Percent reciprocal difference).
You can also choose to skip any data that do not have a corresponding
reciprocal by selecting "Remove no-reciprocals data". Finally you can
choose to "Remove duplicated data points".
Each filter that is applied simly adds to the skip list. Data are not removed
from the skip list except by using the Skip reset button. The final filtered
dataset can be saved using the Save Schedule button.
The include IP data switch saves IP data as an extra data
column. The Save Terrain info switch saves the ZTerrain
information with the electrodes.
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