ASTROSAT CZTI

Data Quality Report

Orbit 36399

Creation date: 2022-06-22T11:50:55.901007
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T04_084T01_9000005198_36399cztM0_level2.evt modeM0/AS1T04_084T01_9000005198_36399cztM0_level2_quad_clean.evt
Size (bytes)843,122,880121,610,880
Size804.1 MB 116.0 MB
Events in quadrant A5,291,133746,145
Events in quadrant B7,287,254733,333
Events in quadrant C5,373,707749,047
Events in quadrant D6,851,202705,978

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227004
B0287063
C0224783
D0277593

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10806200.185082%
B108065715.284101%
C10806390.360911%
D108063493.229687%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 13580 10808 0 0 0.00% 0.00%
B 13580 10808 432 432 3.18% 4.00%
C 13580 10808 20 20 0.15% 0.19%
D 13580 10808 306 306 2.25% 2.83%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 330532 1317.36 1242 1215 250.0
A 15 223 145276 576.28 1242 1215 250.0
A 13 254 16782 62.27 1242 1215 250.0
B 5 172 1514969 6458.71 1207 1174 234.4
B 5 255 446968 1902.01 1207 1174 234.4
B 0 189 174592 739.9 1207 1174 234.4
C 15 214 457137 1627.98 1205 1211 280.1
C 0 10 173244 614.28 1205 1211 280.1
C 0 207 24877 84.5 1205 1211 280.1
D 12 6 997488 3404.84 1197 1162 292.6
D 12 227 242620 825.16 1197 1162 292.6
D 12 16 231065 785.67 1197 1162 292.6

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter