ASTROSAT CZTI

Data Quality Report

Orbit 53694

Creation date: 2025-09-01T00:35:22.870513
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_53694cztM0_level2.fits modeM0/AS1A14_022T05_9000006504_53694cztM0_level2_quad_clean.evt
Size (bytes)1,121,817,60083,882,880
Size1.0 GB 80.0 MB
Events in quadrant A14,860,718315,842
Events in quadrant B5,066,952770,372
Events in quadrant C15,368,512284,490
Events in quadrant D5,637,333634,943

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0494180
B0204940
C0509130
D0221010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7675466860.820847%
B76761531.993226%
C7676500265.164148%
D76763344.351225%

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 7674 7674 4512 4512 58.80% 58.80%
B 7676 7676 86 86 1.12% 1.12%
C 7675 7675 4612 4612 60.09% 60.09%
D 7676 7676 304 304 3.96% 3.96%

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 6156765 40227.38 609 593 153.0
A 3 78 5534233 36159.46 609 593 153.0
A 12 17 178793 1164.44 609 593 153.0
B 7 0 789654 4494.02 815 787 175.5
B 5 185 291916 1658.5 815 787 175.5
B 4 81 160603 910.44 815 787 175.5
C 15 224 6400383 40386.31 565 560 158.5
C 15 158 3071052 19376.45 565 560 158.5
C 13 49 884945 5580.94 565 560 158.5
D 10 172 990843 4274.26 794 757 231.6
D 7 70 365162 1573.16 794 757 231.6
D 2 120 156820 673.73 794 757 231.6

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