ASTROSAT CZTI

Data Quality Report

Orbit 56071

Creation date: 2026-02-09T16:42:32.669754
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_083T03_9000006548_56071cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56071cztM0_level2_quad_clean.evt
Size (bytes)358,850,88087,171,840
Size342.2 MB 83.1 MB
Events in quadrant A3,475,131561,208
Events in quadrant B2,780,063620,278
Events in quadrant C3,751,079532,189
Events in quadrant D2,815,883511,882

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147601
B0125911
C0154781
D0129431

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59212744.627597%
B5922721.215805%
C59222664.491726%
D5921761.283567%

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 7066 5922 209 209 2.96% 3.53%
B 7067 5922 14 14 0.20% 0.24%
C 7067 5922 266 266 3.76% 4.49%
D 7066 5921 26 26 0.37% 0.44%

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 12 115 583798 3727.75 627 611 156.4
A 15 32 235146 1499.15 627 611 156.4
A 3 14 114057 725.15 627 611 156.4
B 0 213 52445 393.33 625 605 131.8
B 5 172 45953 344.08 625 605 131.8
B 9 251 45387 339.78 625 605 131.8
C 12 252 679657 4110.73 597 589 165.2
C 13 3 345141 2085.74 597 589 165.2
C 15 147 156568 944.22 597 589 165.2
D 2 31 97542 568.21 601 574 170.7
D 11 129 88375 514.5 601 574 170.7
D 8 240 59439 344.94 601 574 170.7

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