ASTROSAT CZTI

Data Quality Report

Orbit 53664

Creation date: 2025-08-30T11:00:35.026306
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/AS1A14_022T05_9000006504_53664cztM0_level2.fits modeM0/AS1A14_022T05_9000006504_53664cztM0_level2_quad_clean.evt
Size (bytes)1,098,446,40087,073,920
Size1.0 GB 83.0 MB
Events in quadrant A12,108,233494,600
Events in quadrant B4,044,244781,782
Events in quadrant C17,059,642196,659
Events in quadrant D6,855,407628,228

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0413150
B0173810
C0559300
D0256190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7687291037.856121%
B7687921.196826%
C7687575674.879667%
D76875717.428125%

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 7687 7687 2430 2430 31.61% 31.61%
B 7687 7687 67 67 0.87% 0.87%
C 7687 7687 5337 5337 69.43% 69.43%
D 7687 7687 582 582 7.57% 7.57%

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 3 63 4962963 28023.15 703 683 177.1
A 14 254 2414257 13630.01 703 683 177.1
A 3 78 850782 4800.7 703 683 177.1
B 5 172 243881 1371.38 822 792 177.3
B 5 185 234260 1317.1 822 792 177.3
B 0 182 44478 246.45 822 792 177.3
C 1 241 10153915 76254.71 479 476 133.2
C 15 224 3233682 24282.14 479 476 133.2
C 7 80 494243 3708.31 479 476 133.2
D 10 172 1845386 8096.66 786 750 227.8
D 2 37 387727 1698.56 786 750 227.8
D 13 153 327249 1433.1 786 750 227.8

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