Introduction to Lightning Imaging Sensor (LIS)

ONE SECOND DATA
structure name: one_second
 
Status
Parameter
Structure Element Name
Type
Size
Description
             
A  
TAI93 time
TAI93_time
float64
1
whole second value starting before and continuing beyond one orbit
B  
Alert Summary Flag
alert_summary
byte
1
Order of categories (low to high) with 2 bits each:
Instrument, Platform, External factors, Processing algorithms
bits 1,3,5,7 Fatal, bits 2,4,6,8 Warning
C  
Instrument Alert Flag
instrument_alert
byte
1
status of instrument - each bit corresponds with a status item (see below)
D  
Platform Alert Flag
platform_alert
byte
1
status of platform - each bit corresponds with a status item (see below)
E  
External Alert Flag
external_alert
byte
1
status of external factors- each bit corresponds with a status item (see below)
F  
Processing Alert Flag
processing_alert
byte
1
status of processing algorithms- each bit corresponds with a status item (see below)
G  
Platform coordinates
position_vector
float32
3
location of platform in ECR coordinates (m)
H  
Platform velocity
velocity_vector
float32
3
velocity of platform in ECR coordinates (m/s)
I  
transform matrix
transform_matrix
float32
9
components of transform from pixel plane-boresight coordinates to ECR coordinates of boresight and pixel plane
J  
solar vector
solar_vector
float32
3
unit vector from center of earth to sun in ECR coordinates
K  
ephemeris quality flags
ephemeris_quality_flag
int32
1
As reported by TRMM, except for local bits 24 & 25, which are defined as follows:
00 -> 2 line elements; set bit 10 (repaired data); also set 1
01 -> raw ace data exists and was used; if interpolated over 10 sec set bit 10; set 1
10 -> gps data used , no ace data, if interpolated over 360 sec set bit 10; set 1
11 -> gps and raw ace data compared, gps used
L  
attitude quality flags
attitude_quality_flag
int32
1
As reported by TRMM, except for local bits 24 & 25, which are defined as follows:
00 -> model using 2 line elements; set bit 10 (repaired data); set 1
01 -> filtered model using 2 line elements; set bit 10 (repaired data)
10 -> raw ace data
11 -> filtered ace data; set bit 10 (repaired data); set 1
M  
threshold estimate
boresight_threshold
byte
1
the most likely threshold value applied to the boresight position given the solar zenith angle asssuming a cloud was present
N  
8-bit threshold values
thresholds
byte
16
values of the instrumental threshold settings
O  
noise index
(percent signal)
noise_index
byte
1
a metric that indicates the noise level
P  
event count
event_count
int16
6
fields populated with the raw event count and counts surviving filter stages on a one second basis