ASTROSAT CZTI

Data Quality Report

Orbit 56041

Creation date: 2026-02-05T23:33:14.069264
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_56041cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56041cztM0_level2_quad_clean.evt
Size (bytes)474,160,32088,032,960
Size452.2 MB 84.0 MB
Events in quadrant A5,223,144538,368
Events in quadrant B3,103,121636,064
Events in quadrant C3,067,127564,641
Events in quadrant D5,677,362494,387

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197211
B0135881
C0140111
D0211641

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A619078612.697900%
B61911242.002907%
C6191871.405266%
D61915649.109998%

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 7300 6191 625 625 8.56% 10.10%
B 7301 6192 38 38 0.52% 0.61%
C 7301 6192 48 48 0.66% 0.78%
D 7301 6192 513 513 7.03% 8.28%

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 15 32 2351377 15130.27 626 609 155.4
A 7 64 242493 1556.84 626 609 155.4
A 4 78 56892 362.25 626 609 155.4
B 0 199 80908 577.35 649 628 139.0
B 0 213 74953 534.53 649 628 139.0
B 3 16 74708 532.76 649 628 139.0
C 2 12 197673 1136.71 626 622 173.4
C 12 252 107721 617.81 626 622 173.4
C 15 199 81989 469.37 626 622 173.4
D 11 129 2545470 14634.77 605 575 173.9
D 6 239 169109 969.18 605 575 173.9
D 10 199 156307 895.56 605 575 173.9

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