ASTROSAT CZTI

Data Quality Report

Orbit 36002

Creation date: 2022-07-19T02:08:43.544851
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_050T19_9000005156_36002cztM0_level2.evt modeM0/AS1A11_050T19_9000005156_36002cztM0_level2_quad_clean.evt
Size (bytes)278,150,40070,128,000
Size265.3 MB 66.9 MB
Events in quadrant A1,695,921476,042
Events in quadrant B1,915,606477,391
Events in quadrant C2,204,613470,613
Events in quadrant D2,368,684451,734

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07324129
B08008108
C08800128
D09380180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0722

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A349010.028653%
B3502260.742433%
C34901193.409742%
D34901022.922636%

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 3554 3529 0 0 0.00% 0.00%
B 3554 3527 16 16 0.45% 0.45%
C 3554 3514 91 91 2.56% 2.59%
D 3554 3520 89 89 2.50% 2.53%

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 96841 1163.01 411 403 82.9
A 13 254 5679 63.63 411 403 82.9
A 13 6 4640 51.1 411 403 82.9
B 5 172 145944 1903.16 402 392 76.5
B 4 171 94566 1231.37 402 392 76.5
B 5 255 40899 529.65 402 392 76.5
C 0 207 290818 3201.38 394 397 90.7
C 15 214 144312 1586.41 394 397 90.7
C 0 10 92265 1012.68 394 397 90.7
D 12 235 308998 3175.35 398 388 97.2
D 10 118 187002 1920.11 398 388 97.2
D 12 227 111107 1139.21 398 388 97.2

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