ASTROSAT CZTI

Data Quality Report

Orbit 30412

Creation date: 2024-06-27T20:14:54.528874
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/AS1C05_019T04_9000004376_30412cztM0_level2.evt modeM0/AS1C05_019T04_9000004376_30412cztM0_level2_quad_clean.evt
Size (bytes)573,600,960125,858,880
Size547.0 MB 120.0 MB
Events in quadrant A3,659,937851,476
Events in quadrant B5,129,758871,052
Events in quadrant C3,591,145861,287
Events in quadrant D4,578,263802,523

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148382
B0194562
C0147772
D0176642

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60951782.920427%
B60951412.313372%
C60951652.707137%
D60954687.678425%

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 7425 6095 81 81 1.09% 1.33%
B 7425 6095 17 17 0.23% 0.28%
C 7425 6095 4 4 0.05% 0.07%
D 7425 6095 359 359 4.84% 5.89%

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 0 13 515085 3246.4 802 789 158.4
A 8 192 27777 170.36 802 789 158.4
A 11 242 14560 86.93 802 789 158.4
B 6 159 1809988 12168.01 805 786 148.7
B 0 229 65330 434.1 805 786 148.7
B 15 32 37783 248.83 805 786 148.7
C 3 233 264414 1426.31 800 806 184.8
C 14 238 130277 700.53 800 806 184.8
C 10 22 53812 286.8 800 806 184.8
D 13 249 1154401 6338.39 775 757 182.0
D 8 195 214091 1172.11 775 757 182.0
D 2 250 104421 569.55 775 757 182.0

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