ASTROSAT CZTI

Data Quality Report

Orbit 55369

Creation date: 2025-12-22T18:33:30.892478
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_009T01_9000006534_55369cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55369cztM0_level2_quad_clean.evt
Size (bytes)499,849,92099,250,560
Size476.7 MB 94.7 MB
Events in quadrant A6,051,107628,689
Events in quadrant B3,106,480704,617
Events in quadrant C5,441,256598,395
Events in quadrant D3,384,528607,531

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0226481
B0141701
C0210221
D0147951

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A669067110.029895%
B66891251.868740%
C66894286.398565%
D66901121.674141%

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 7585 6690 481 481 6.34% 7.19%
B 7584 6689 16 16 0.21% 0.24%
C 7584 6689 306 306 4.03% 4.57%
D 7585 6691 66 66 0.87% 0.99%

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 4 159 2091889 11722.48 712 695 178.4
A 0 8 781617 4377.57 712 695 178.4
A 12 115 346617 1939.11 712 695 178.4
B 5 185 71816 461.8 714 689 154.0
B 0 199 60969 391.38 714 689 154.0
B 10 247 60466 388.11 714 689 154.0
C 9 38 2370466 12374.3 686 679 191.5
C 12 250 187808 977.13 686 679 191.5
C 12 252 69970 361.82 686 679 191.5
D 11 129 160598 788.54 708 676 202.8
D 10 181 133600 655.42 708 676 202.8
D 15 107 116876 572.95 708 676 202.8

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