ASTROSAT CZTI

Data Quality Report

Orbit 37736

Creation date: 2024-06-27T21:43:47.406512
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/AS1A11_106T02_9000005344_37736cztM0_level2.evt modeM0/AS1A11_106T02_9000005344_37736cztM0_level2_quad_clean.evt
Size (bytes)755,732,16064,365,120
Size720.7 MB 61.4 MB
Events in quadrant A8,832,646226,856
Events in quadrant B3,170,339479,313
Events in quadrant C2,886,447481,527
Events in quadrant D7,645,084393,436

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0295853
B0125352
C0114482
D0262552

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5230269651.548757%
B52301713.269598%
C5230410.783939%
D5230187635.869981%

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 7143 5230 2663 2663 37.28% 50.92%
B 7142 5229 143 143 2.00% 2.73%
C 7142 5229 43 43 0.60% 0.82%
D 7142 5229 1869 1869 26.17% 35.74%

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 15 222 7079035 92737.27 378 371 76.3
A 10 83 215826 2822.67 378 371 76.3
A 9 143 36283 470.48 378 371 76.3
B 4 81 309960 2698.66 613 597 114.6
B 5 172 107945 936.43 613 597 114.6
B 5 255 96363 835.39 613 597 114.6
C 15 214 227504 1622.21 611 617 139.9
C 0 10 158847 1131.32 611 617 139.9
C 1 23 46720 329.63 611 617 139.9
D 2 249 2662396 21049.59 520 507 126.5
D 12 227 2221961 17566.73 520 507 126.5
D 2 153 220014 1735.81 520 507 126.5

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