ASTROSAT CZTI

Data Quality Report

Orbit 56446

Creation date: 2026-03-05T03:41:31.369371
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_083T05_9000006554_56446cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56446cztM0_level2_quad_clean.evt
Size (bytes)608,950,08084,450,240
Size580.7 MB 80.5 MB
Events in quadrant A10,402,179400,507
Events in quadrant B4,043,555620,941
Events in quadrant C3,328,178566,351
Events in quadrant D4,274,365525,885

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0352911
B0166171
C0146961
D0172191

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6353244838.532977%
B63533866.075870%
C63521271.999370%
D63532063.242563%

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 7393 6353 2551 2551 34.51% 40.15%
B 7393 6354 182 182 2.46% 2.86%
C 7392 6353 121 121 1.64% 1.90%
D 7393 6354 216 216 2.92% 3.40%

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 95 4247528 29031.1 582 567 146.3
A 3 14 2486259 16991.53 582 567 146.3
A 12 3 984761 6727.69 582 567 146.3
B 4 206 924788 6552.18 653 630 141.0
B 0 231 151374 1068.76 653 630 141.0
B 5 172 107523 757.86 653 630 141.0
C 1 16 263994 1501.54 638 633 175.4
C 6 223 189855 1078.84 638 633 175.4
C 1 29 102982 583.54 638 633 175.4
D 12 3 506676 2814.46 630 604 179.8
D 5 113 392857 2181.47 630 604 179.8
D 8 240 288417 1600.64 630 604 179.8

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