ASTROSAT CZTI

Data Quality Report

Orbit 20220907_T05_051T01_9000005334_level2

Creation date: 2022-09-13T11:50:19.975154
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/AS1T05_051T01_9000005334cztM0_level2_bc.evt modeM0/AS1T05_051T01_9000005334cztM0_level2_quad_clean.evt
Size (bytes)2,899,431,360834,736,320
Size2.7 GB 796.1 MB
Events in quadrant A21,434,8675,235,768
Events in quadrant B18,258,1105,324,904
Events in quadrant C18,817,0355,304,737
Events in quadrant D24,870,8134,952,858

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02490
B02470
C02500
D02490

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01568450
B01484950
C01457280
D01743560

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013340
B013330
C013340
D013380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A648999991.539315%
B6518310381.592440%
C651849941.524914%
D6505525883.978172%

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 91455 65339 47 47 0.05% 0.07%
B 91455 65611 108 108 0.12% 0.16%
C 91455 65647 126 126 0.14% 0.19%
D 91455 65531 297 297 0.32% 0.45%

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 15 222 4821036 6568.37 3249 3189 733.5
A 10 83 3003492 4090.44 3249 3189 733.5
A 6 10 404269 546.81 3249 3189 733.5
B 5 172 1008249 1525.79 3305 3231 658.7
B 5 255 677306 1023.36 3305 3231 658.7
B 0 221 475738 717.35 3305 3231 658.7
C 15 214 2630354 3554.23 3206 3187 739.2
C 14 254 2010656 2715.86 3206 3187 739.2
C 0 10 694886 935.78 3206 3187 739.2
D 2 249 3662305 4825.32 3159 3062 758.3
D 12 235 3420028 4505.84 3159 3062 758.3
D 13 249 931979 1224.93 3159 3062 758.3

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