Data Record

0

zero_doppler_time
Zero doppler time
at which Summary Quality
information applies 
MJD 
1 
mjd 
12 byte(s) 
1

attach_flag
Attachment Flag
Set to 1 if all MDSRs
corresponding to this ADSR
are blank, set to zero
otherwise. This flag will
always be zero because this
ADSR is updated
once per slice or scene.
Therefore, if there are no
MDSRs, this ADSR is not
produced at all.

flag 
1 
BooleanFlag 
1 byte(s) 
2

input_mean_flag
Input data mean
outside nominal range flag
0 = mean of I and Q input
values are both within
specified range from
expected mean. For expected
mean of x, the measured mean
must fall between
xthreshold to x+threshold.
1 = otherwise

flag 
1 
BooleanFlag 
1 byte(s) 
3

input_std_dev_flag
Input data
standard deviation outside
nominal range flag
0 = standard deviation
values of I and Q input
values are both within
specified range of expected
standard deviation. For
expected std. dev.
x, the measured std. dev.
must fall between
xthreshold to x+threshold.
1 = otherwise

flag 
1 
BooleanFlag 
1 byte(s) 
4

input_gaps_flag
Significant gaps
in the input data flag
0 = number of input gaps
<= threshold value 1 =
number of input data gaps
> threshold value.

flag 
1 
BooleanFlag 
1 byte(s) 
5

input_missing_lines_flag
Missing lines
significant flag
0 = percentage of missing
lines <= threshold value
1 = percentage of missing
lines > threshold value.
The number of missing
lines is the number of lines
missing from the input data,
excluding data gaps.

flag 
1 
BooleanFlag 
1 byte(s) 
6

dop_cen_flag
Doppler Centroid
Uncertain flag 0 =
confidence measure >=
specified value 1 =
confidence measure <
specified value. If more
than one Doppler centroid
estimation is performed in a
slice, the flag is set if
any confidence measure is
less than the threshold.

flag 
1 
BooleanFlag 
1 byte(s) 
7

dop_amb_flag
Doppler
ambiguity estimate uncertain
flag 0 =
confidence measure >=
specified value 1 =
confidence measure <
specified value

flag 
1 
BooleanFlag 
1 byte(s) 
8

output_mean_flag
Output data mean
outside nominal range flag
0 = mean of I and Q
output values for SLC image
or mean of detected pixels
for a detected product, are
both within specified range
from expected mean. For
expected mean of x, the
measured mean must fall
between xthreshold to
x+threshold. 1= otherwise.

flag 
1 
BooleanFlag 
1 byte(s) 
9

output_std_dev_flag
Output data
standard deviation outside
nominal range flag
0 = mean of I and Q
output values for SLC image
or mean of detected pixels
for a detected product, are
both within specified range
from expected mean. For
expected mean of x, the
measured mean must fall
between xthreshold to
x+threshold. 1 = otherwise

flag 
1 
BooleanFlag 
1 byte(s) 
10

chirp_flag
Chirp extraction
failed or is of low quality flag
0 = able to reconstruct
all chirps or chirp
reconstruction not requested
(nominal chirp used) AND all
quality measures were
acceptable. 1 = unable to
reconstruct a chirp during
processing and chirp
reconstruction was requested
or the quality is below the
acceptable levels. When
value = 1, (i.e. unable to
reconstruct a chirp during
processing and chirp
reconstruction was requested
or the quality is
below the acceptable
levels), PFASAR uses the
nominal range pulse for
processing and a nominal
elevation beam scaling factor.

flag 
1 
BooleanFlag 
1 byte(s) 
11

missing_data_sets_flag
Data sets
missing flag 0 =
all data sets which are
supposed to be in the
product are present 1 = any
data sets (including ADSs)
are missing from the
product which are supposed
to be included under normal
circumstances. When value =
1 (i.e any data sets,
including ADSs, are missing
from the product which are
supposed to be included
under normal circumstances),
which data sets are missing
can be determined by an
examination of the DSDs in
the SPH.

flag 
1 
BooleanFlag 
1 byte(s) 
12

invalid_downlink_flag
Invalid downlink
parameters flag 0
= all parameters read from
the downlinked data were
valid 1 = displayed if any
downlink parameter is out of
range and therefore
a default value has been
used during processing.

flag 
1 
BooleanFlag 
1 byte(s) 
13

spare_1
Spare 
 
1 
SpareField 
7 byte(s) 
14

thresh_chirp_broadening
Threshold for
setting the chirp quality flag.
Maximum percentage
broadening permitted in
crosscorrelation pulse
width compared to
theoretical width.

% 
1 
fl 
4 byte(s) 
15

thresh_chirp_sidelobe
Threshold for
setting the chirp quality flag
First sidelobe of the
chirp cross correlation function

dB 
1 
fl 
4 byte(s) 
16

thresh_chirp_islr
Threshold for
setting the chirp quality flag
ISLR of the chirp cross
correlation function

dB 
1 
fl 
4 byte(s) 
17

thresh_input_mean
Threshold for
setting the mean of input data
quality flag For
an expected mean value of x,
this is the value T, such
that the measured mean must
fall between the xT and x+T.

 
1 
fl 
4 byte(s) 
18

exp_input_mean
Expected mean
input value for this product for
both I and Q. 
 
1 
fl 
4 byte(s) 
19

thresh_input_std_dev
Threshold for
setting the standard deviation
of input data quality flag
For an expected standard
deviation value of y, this
is the value D, such that
the measured standard
deviation must fall between
the yD and y+D.

 
1 
fl 
4 byte(s) 
20

exp_input_std_dev
Expected input
std. dev. for this product for
both I and Q. 
 
1 
fl 
4 byte(s) 
21

thresh_dop_cen
Threshold for
setting the Doppler Centroid
quality flag
Threshold for Doppler
Centroid confidence

 
1 
fl 
4 byte(s) 
22

thresh_dop_amb
Threshold for
setting the Doppler Centroid
ambiguity quality flag
Threshold for setting the
Doppler Centroid ambiguity
confidence flag

 
1 
fl 
4 byte(s) 
23

thresh_output_mean
Threshold for
setting the mean of output data
quality flag For
an expected mean value of x,
this is the value T, such
that the measured mean must
fall between the xT and x+T.

 
1 
fl 
4 byte(s) 
24

exp_output_mean
Expected mean
output value for this product.
For an SLC product this is the
expected mean of both the I and
Q values. 
 
1 
fl 
4 byte(s) 
25

thresh_output_std_dev
Threshold for
setting the standard deviation
of output data quality flag
For an expected standard
deviation value of y, this
is the value D, such that
the measured standard
deviation must fall between
the yD and y+D.

 
1 
fl 
4 byte(s) 
26

exp_output_std_dev
Expected output
std. dev. for this product. For
an SLC product this is the
expected output std. dev. for
both I and Q values. 
 
1 
fl 
4 byte(s) 
27

thresh_input_missing_lines
Threshold for
setting the missing lines
quality flag
Maximum percentage of
missing lines to total lines.

% 
1 
fl 
4 byte(s) 
28

thresh_input_gaps
Threshold for
setting the missing gaps quality
flag Maximum
number of missing gaps allowed.

 
1 
fl 
4 byte(s) 
29

lines_per_gaps
Number of missing
lines which constitute a gap 
lines 
1 
ul 
4 byte(s) 
30

spare_2
Spare 
 
1 
SpareField 
15 byte(s) 
31

input_mean
Input data mean
I channel, Q channel

 
2 
fl 
2*4 byte(s) 
32

input_std_dev
Input data
standard deviation
I channel, Q channel

 
2 
fl 
2*4 byte(s) 
33

num_gaps
Number of gaps
Composed of a
predetermined number of
consecutive missing lines

 
1 
fl 
4 byte(s) 
34

num_missing_lines
Number of
missing lines
Excluding gaps

 
1 
fl 
4 byte(s) 
35

output_mean
Output data mean
For detected products:
second value is set to zero,
or I channel followed by Q
channel for SLC

 
2 
fl 
2*4 byte(s) 
36

output_std_dev
Output data
standard deviation
For detected products:
second value is set to zero,
or I channel followed by Q
channel for SLC

 
2 
fl 
2*4 byte(s) 
37

tot_errors
Total number of
errors detected in isp headers 
 
1 
ul 
4 byte(s) 
38

Spare_3
Spare 
 
1 
SpareField 
16 byte(s) 
39

land_flag
Land Flag
0 = no land in imagette 1
= land in imagette

flag 
1 
BooleanFlag 
1 byte(s) 
40

look_conf_flag
Look image
statistics confidence parameter
flag 1 = The
ratio of the standard
deviation to the mean of the
first look image is outside
the range given by a minimum
and a maximum
threshold. 0 =otherwise

flag 
1 
BooleanFlag 
1 byte(s) 
41

inter_look_conf_flag
Interlook
confidence statistics confidence
parameter flag 1 =
The normalised deviation of
the two interlook
subimages is greater than a
maximum threshold. 0 = otherwise

flag 
1 
BooleanFlag 
1 byte(s) 
42

az_cutoff_flag
Azimuth cutoff
convergence measure flag
1 = The normalised RMS
error between the fitted
covariance profile is
greater than a maximum
threshold. 0 = otherwise

flag 
1 
BooleanFlag 
1 byte(s) 
43

az_cutoff_iteration_flag
Azimuth cutoff
Iteration count overflow flag
1 = The Azimuth cutoff
fit did not converge within
a minimum number of
iterations. 0 = otherwise

flag 
1 
BooleanFlag 
1 byte(s) 
44

phase_flag
Phase
information confidence measure
flag 1 = The
imaginary spectral peak is
less than a minimum
threshold, and the zero lag
shift is greater than a
minimum threshold. 0 = otherwise

flag 
1 
BooleanFlag 
1 byte(s) 
45

spare_4
Spare 
 
1 
SpareField 
4 byte(s) 
46

look_conf_thresh
Look image
statistics confidence parameter
thresholds (minimum and maximum) 
 
2 
fl 
2*4 byte(s) 
47

inter_look_conf_thresh
Interlook
confidence statistics confidence
parameter threshold 
 
1 
fl 
4 byte(s) 
48

az_cutoff_thresh
Azimuth cutoff
convergence measure threshold 
 
1 
fl 
4 byte(s) 
49

az_cutoff_iterations_thresh
Azimuth cutoff
Iteration count overflow threshold 
 
1 
ul 
4 byte(s) 
50

phase_peak_thresh
Phase information
confidence measure threshold for
the spectral peak 
 
1 
fl 
4 byte(s) 
51

phase_cross_thresh
Phase information
confidence measure threshold for
cross covariance peak offset 
m 
1 
fl 
4 byte(s) 
52

spare_5
Spare 
 
1 
SpareField 
12 byte(s) 
53

look_conf
Look image
statistics confidence parameter
The ratio of the standard
deviation to the mean of the
first look image.

 
1 
fl 
4 byte(s) 
54

inter_look_conf
Interlook
confidence statistics confidence
parameter.The normalised
deviation of the two interlook subimages 
 
1 
fl 
4 byte(s) 
55

az_cutoff
Azimuth cutoff
convergence measure
The normalised RMS error
between the fitted
covariance profile.

 
1 
fl 
4 byte(s) 
56

phase_peak_conf
Phase information
confidence measure for the
spectral peakThe imaginary
spectral peak 
 
1 
fl 
4 byte(s) 
57

phase_cross_conf
Phase information
confidence measure for cross
covariance peak offset 
m 
1 
fl 
4 byte(s) 
58

spare_6
Spare 
 
1 
SpareField 
12 byte(s) 