ASTROSAT CZTI

Data Quality Report

Orbit 53475

Creation date: 2025-08-17T06:11:47.059191
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_002T06_9000006496_53475cztM0_level2.fits modeM0/AS1A14_002T06_9000006496_53475cztM0_level2_quad_clean.evt
Size (bytes)1,013,253,12096,514,560
Size966.3 MB 92.0 MB
Events in quadrant A12,848,501525,497
Events in quadrant B4,355,348845,490
Events in quadrant C15,488,287305,351
Events in quadrant D4,196,777690,016

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0437330
B0186250
C0514563
D0184530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7993312539.096710%
B79931291.613912%
C7993501562.742400%
D79931031.288628%

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 7993 7993 2715 2715 33.97% 33.97%
B 7993 7993 76 76 0.95% 0.95%
C 7993 7993 4575 4575 57.24% 57.24%
D 7993 7993 93 93 1.16% 1.16%

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 62 3925983 21474.04 743 724 182.8
A 3 63 2916564 15951.78 743 724 182.8
A 15 174 2835194 15506.62 743 724 182.8
B 2 249 253761 1353.87 875 844 186.8
B 10 28 200104 1066.65 875 844 186.8
B 15 20 116022 616.55 875 844 186.8
C 15 224 4508703 29286.69 562 556 153.9
C 1 241 3629082 23572.32 562 556 153.9
C 7 64 2131510 13843.51 562 556 153.9
D 2 120 226026 947.99 851 816 237.6
D 3 12 137034 573.39 851 816 237.6
D 15 42 97115 405.36 851 816 237.6

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