ASTROSAT CZTI

Data Quality Report

Orbit 54177

Creation date: 2025-10-03T13:08:52.485450
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_012T01_9000006512_54177cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54177cztM0_level2_quad_clean.evt
Size (bytes)610,107,84082,926,720
Size581.8 MB 79.1 MB
Events in quadrant A3,340,068579,771
Events in quadrant B3,363,882629,076
Events in quadrant C5,981,137507,181
Events in quadrant D9,411,066355,567

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147261
B0144691
C0221202
D0322961

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62861842.927140%
B6287731.161126%
C628689214.190264%
D6286239738.132358%

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 7096 6287 121 121 1.71% 1.92%
B 7097 6288 21 21 0.30% 0.33%
C 7096 6287 725 725 10.22% 11.53%
D 7096 6287 2060 2060 29.03% 32.77%

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 7 29 297839 1856.66 643 627 160.1
A 15 174 291715 1818.41 643 627 160.1
A 0 8 138791 863.1 643 627 160.1
B 15 20 294366 2129.99 641 616 137.9
B 5 236 157679 1138.87 641 616 137.9
B 14 167 112959 814.6 641 616 137.9
C 15 177 2550028 15592.48 590 585 163.5
C 10 171 338073 2064.09 590 585 163.5
C 15 161 192836 1175.81 590 585 163.5
D 8 176 6742192 48413.15 484 461 139.3
D 10 181 228703 1639.03 484 461 139.3
D 2 165 194485 1393.31 484 461 139.3

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