ASTROSAT CZTI

Data Quality Report

Orbit 35146

Creation date: 2022-03-29T20:50:32.819452
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_065T05_9000005032_35146cztM0_level2.evt modeM0/AS1A11_065T05_9000005032_35146cztM0_level2_quad_clean.evt
Size (bytes)553,452,480105,511,680
Size527.8 MB 100.6 MB
Events in quadrant A3,326,331741,972
Events in quadrant B3,853,223730,243
Events in quadrant C3,450,512707,586
Events in quadrant D5,785,789657,164

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133322
B0149041
C0136411
D0208971

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5117851.661130%
B51172314.514364%
C51171202.345124%
D51173426.683604%

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 7239 5118 26 26 0.36% 0.51%
B 7239 5118 161 161 2.22% 3.15%
C 7239 5118 79 79 1.09% 1.54%
D 7239 5118 355 355 4.90% 6.94%

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 15 169 542914 3905.43 698 689 138.8
A 10 83 72745 518.99 698 689 138.8
A 13 6 14919 102.49 698 689 138.8
B 5 236 847909 6708.78 672 658 126.3
B 5 172 251883 1989.27 672 658 126.3
B 4 232 75492 592.56 672 658 126.3
C 0 10 462990 3060.02 659 668 151.1
C 15 214 215614 1422.69 659 668 151.1
C 9 187 121186 797.69 659 668 151.1
D 8 195 2002329 12528.45 662 647 159.8
D 2 250 226442 1413.24 662 647 159.8
D 13 249 184785 1152.51 662 647 159.8

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