ASTROSAT CZTI

Data Quality Report

Orbit 03833

Creation date: 2024-06-27T14:34:08.128904
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/AS1G05_189T01_9000000492_03833cztM0_level2.evt modeM0/AS1G05_189T01_9000000492_03833cztM0_level2_quad_clean.evt
Size (bytes)465,238,08075,507,840
Size443.7 MB 72.0 MB
Events in quadrant A4,359,522460,772
Events in quadrant B3,202,042474,505
Events in quadrant C3,079,151460,261
Events in quadrant D3,017,737447,747

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172692
B0136591
C0136281
D0136191

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63513084.849630%
B6351540.850260%
C6351500.787278%
D6351450.708550%

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 7516 6351 210 210 2.79% 3.31%
B 7516 6351 8 8 0.11% 0.13%
C 7516 6351 22 22 0.29% 0.35%
D 7516 6352 29 29 0.39% 0.46%

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 15 234 1476003 9876.43 736 722 149.4
A 8 15 23020 149.28 736 722 149.4
A 15 174 14984 95.48 736 722 149.4
B 15 204 126027 868.24 756 738 144.3
B 10 16 72191 495.16 756 738 144.3
B 14 167 34235 232.13 756 738 144.3
C 2 53 126731 749.52 721 725 168.1
C 10 65 104117 615.0 721 725 168.1
C 9 247 11437 63.72 721 725 168.1
D 13 248 249277 1435.36 716 694 173.2
D 2 14 21194 118.37 716 694 173.2
D 5 233 15528 85.65 716 694 173.2

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
Veto Counter