ASTROSAT CZTI

Data Quality Report

Orbit 38432

Creation date: 2024-06-27T21:52:40.048200
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/AS1A12_018T01_9000005386_38432cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38432cztM0_level2_quad_clean.evt
Size (bytes)349,228,80094,138,560
Size333.1 MB 89.8 MB
Events in quadrant A2,897,960664,057
Events in quadrant B2,843,978656,635
Events in quadrant C3,379,020599,723
Events in quadrant D3,415,564578,462

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116542
B0115611
C0130461
D0134591

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5022220.438072%
B50221082.150538%
C50222745.455994%
D50221001.991239%

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 7054 5023 7 7 0.10% 0.14%
B 7054 5023 60 60 0.85% 1.19%
C 7054 5023 206 206 2.92% 4.10%
D 7054 5023 93 93 1.32% 1.85%

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 394480 3234.62 606 594 121.8
A 9 143 59783 486.07 606 594 121.8
A 12 189 36537 295.17 606 594 121.8
B 4 232 182115 1638.31 590 577 110.8
B 5 184 102189 917.01 590 577 110.8
B 0 183 78732 705.32 590 577 110.8
C 4 254 836276 6463.95 566 571 129.3
C 15 214 210470 1623.51 566 571 129.3
C 14 254 36836 280.5 566 571 129.3
D 12 227 275680 1993.9 584 570 138.0
D 13 249 181996 1314.91 584 570 138.0
D 2 16 136479 985.02 584 570 138.0

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