ASTROSAT CZTI

Data Quality Report

Orbit 56394

Creation date: 2026-03-02T10:54:30.140744
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_083T05_9000006554_56394cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56394cztM0_level2_quad_clean.evt
Size (bytes)1,043,490,24087,160,320
Size995.1 MB 83.1 MB
Events in quadrant A10,914,409600,077
Events in quadrant B6,031,941763,098
Events in quadrant C5,080,775674,945
Events in quadrant D16,003,46561,277

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0377820
B0231970
C0206450
D0528620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7676287737.480459%
B767698012.767066%
C76777169.326560%
D76767676100.000000%

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 7736 7678 2115 2115 27.34% 27.55%
B 7736 7677 359 359 4.64% 4.68%
C 7737 7679 395 395 5.11% 5.14%
D 7735 7675 4921 4921 63.62% 64.12%

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 79 3398139 19599.4 703 687 173.3
A 12 3 2516252 14511.92 703 687 173.3
A 4 95 1243061 7167.07 703 687 173.3
B 4 206 1291755 7379.89 818 786 174.9
B 5 172 583722 3332.38 818 786 174.9
B 8 128 241628 1376.78 818 786 174.9
C 13 3 1501388 6878.02 809 799 218.2
C 15 230 144689 659.53 809 799 218.2
C 12 252 108461 493.47 809 799 218.2
D 8 129 15483884 547453.8 94 90 28.3
D 8 113 33866 1194.2 94 90 28.3
D 2 33 23098 813.48 94 90 28.3

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