ASTROSAT CZTI

Data Quality Report

Orbit 20190203_A05_097T01_9000002690_level2

Creation date: 2025-11-26T22:59:49.065449
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/AS1A05_097T01_9000002690cztM0_level2.fits modeM0/AS1A05_097T01_9000002690cztM0_level2_quad_clean.evt
Size (bytes)194,353,920190,998,720
Size185.4 MB 182.2 MB
Events in quadrant A1,204,0841,129,371
Events in quadrant B1,150,0661,154,349
Events in quadrant C1,166,2401,126,369
Events in quadrant D1,019,3401,028,041

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0418380
B0423360
C0411270
D0558780

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04000
B04000
C04000
D04000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A195363881.986077%
B195364512.308559%
C195364792.451884%
D195369484.852580%

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 22516 19536 0 0 0.00% 0.00%
B 22516 19535 0 0 0.00% 0.00%
C 22516 19535 0 0 0.00% 0.00%
D 22516 19535 0 0 0.00% 0.00%

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 29 1165 11.17 313 294 78.0
A 0 30 946 8.36 313 294 78.0
A 7 110 943 8.32 313 294 78.0
B 2 9 981 11.18 303 289 61.9
B 2 8 819 8.56 303 289 61.9
B 5 255 754 7.51 303 289 61.9
C 2 191 816 6.63 308 287 79.8
C 12 241 800 6.43 308 287 79.8
C 9 233 787 6.27 308 287 79.8
D 3 14 758 6.31 290 264 78.3
D 10 190 753 6.25 290 264 78.3
D 6 231 730 5.95 290 264 78.3

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