ASTROSAT CZTI

Data Quality Report

Orbit 12261

Creation date: 2024-06-27T16:24:37.678378
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/AS1G08_006T04_9000001812_12261cztM0_level2.evt modeM0/AS1G08_006T04_9000001812_12261cztM0_level2_quad_clean.evt
Size (bytes)353,197,44067,222,080
Size336.8 MB 64.1 MB
Events in quadrant A4,430,777419,500
Events in quadrant B2,575,572448,522
Events in quadrant C1,623,975464,162
Events in quadrant D1,822,298449,548

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157090
B099640
C074150
D079710

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A357771219.904948%
B35772867.995527%
C3577110.307520%
D3577371.034386%

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 3578 3578 598 598 16.71% 16.71%
B 3578 3578 172 172 4.81% 4.81%
C 3578 3578 4 4 0.11% 0.11%
D 3578 3578 27 27 0.75% 0.75%

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 14 237 1161094 15032.22 375 369 77.2
A 8 15 846850 10962.54 375 369 77.2
A 13 251 762339 9868.06 375 369 77.2
B 4 239 730290 9895.6 389 382 73.8
B 11 51 145497 1967.37 389 382 73.8
B 4 206 105841 1429.74 389 382 73.8
C 15 208 74884 832.69 385 388 89.5
C 0 207 20239 221.89 385 388 89.5
C 4 175 19254 210.88 385 388 89.5
D 10 199 137887 1492.02 386 374 92.2
D 1 52 63403 683.87 386 374 92.2
D 13 104 50407 542.86 386 374 92.2

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