ASTROSAT CZTI

Data Quality Report

Orbit 35390

Creation date: 2022-04-16T11:56:53.511507
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/AS1A11_099T01_9000005068_35390cztM0_level2.evt modeM0/AS1A11_099T01_9000005068_35390cztM0_level2_quad_clean.evt
Size (bytes)701,317,44046,618,560
Size668.8 MB 44.5 MB
Events in quadrant A2,645,205320,520
Events in quadrant B10,892,104128,520
Events in quadrant C3,181,613302,258
Events in quadrant D4,168,808294,654

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109653
B0358802
C0124312
D0160072

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A519760.115451%
B5197398976.755821%
C51971813.482779%
D51972434.675774%

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 7079 5198 1 1 0.01% 0.02%
B 7079 5198 3429 3429 48.44% 65.97%
C 7079 5198 126 126 1.78% 2.42%
D 7079 5198 217 217 3.07% 4.17%

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 120253 921.01 641 629 129.9
A 7 48 38641 292.66 641 629 129.9
A 13 254 8797 62.89 641 629 129.9
B 4 251 8678541 119170.02 381 371 72.8
B 5 236 258545 3545.29 381 371 72.8
B 5 172 256517 3517.44 381 371 72.8
C 0 10 382961 2685.57 610 615 142.4
C 15 214 212403 1487.58 610 615 142.4
C 0 207 151298 1058.39 610 615 142.4
D 7 80 1034177 6937.72 605 588 149.0
D 8 195 354440 2375.14 605 588 149.0
D 13 249 124242 829.99 605 588 149.0

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