ASTROSAT CZTI

Data Quality Report

Orbit 46791

Creation date: 2024-06-27T23:27:41.003436
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/AS1A13_053T01_9000006266_46791cztM0_level2.fits modeM0/AS1A13_053T01_9000006266_46791cztM0_level2_quad_clean.evt
Size (bytes)422,818,56095,414,400
Size403.2 MB 91.0 MB
Events in quadrant A5,677,697629,943
Events in quadrant B3,033,945655,856
Events in quadrant C2,522,074627,548
Events in quadrant D3,965,096568,524

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204991
B0129071
C0119681
D0156011

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58272113.621074%
B5828671.149623%
C5828300.514756%
D58281953.345916%

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 6926 5827 74 74 1.07% 1.27%
B 6927 5827 16 16 0.23% 0.27%
C 6927 5827 12 12 0.17% 0.21%
D 6927 5827 147 147 2.12% 2.52%

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 10 83 2946380 22196.31 639 626 132.7
A 13 248 164831 1237.29 639 626 132.7
A 9 191 48919 363.89 639 626 132.7
B 3 112 302351 2392.43 638 619 126.1
B 5 172 84504 665.12 638 619 126.1
B 0 198 72749 571.92 638 619 126.1
C 12 249 38659 260.55 624 627 146.0
C 14 254 21194 140.9 624 627 146.0
C 3 233 12214 79.38 624 627 146.0
D 2 37 593289 3833.75 621 602 154.6
D 13 249 496422 3207.17 621 602 154.6
D 13 138 361790 2336.32 621 602 154.6

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