ASTROSAT CZTI

Data Quality Report

Orbit 55451

Creation date: 2025-12-28T06:23:14.337091
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_099T01_9000006536_55451cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55451cztM0_level2_quad_clean.evt
Size (bytes)731,479,68080,225,280
Size697.6 MB 76.5 MB
Events in quadrant A3,121,203619,348
Events in quadrant B5,002,588606,752
Events in quadrant C2,973,022591,039
Events in quadrant D15,460,985145,839

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143952
B0195420
C0139680
D05053112

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6678520.778676%
B668068210.209581%
C6680130.194611%
D6678514276.999102%

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 6678 6678 44 44 0.66% 0.66%
B 6681 6681 513 513 7.68% 7.68%
C 6681 6681 17 17 0.25% 0.25%
D 6678 6678 4962 4962 74.30% 74.30%

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 0 8 292547 1674.12 689 670 174.3
A 3 78 41647 235.03 689 670 174.3
A 4 159 37503 211.26 689 670 174.3
B 12 32 1503671 10699.04 654 631 140.5
B 0 171 439792 3126.07 654 631 140.5
B 5 185 142252 1008.1 654 631 140.5
C 12 252 139275 749.82 674 668 184.9
C 13 3 40437 215.14 674 668 184.9
C 11 244 37062 196.88 674 668 184.9
D 2 62 12366636 110200.0 387 370 112.2
D 2 153 526330 4687.01 387 370 112.2
D 6 239 386031 3436.76 387 370 112.2

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