ASTROSAT CZTI

Data Quality Report

Orbit 01077

Creation date: 2024-06-27T14:07:05.739564
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/AS1P01_998T02_9000000190_01077cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01077cztM0_level2_quad_clean.evt
Size (bytes)361,169,28036,120,960
Size344.4 MB 34.4 MB
Events in quadrant A2,567,794239,308
Events in quadrant B2,784,144241,339
Events in quadrant C2,793,731232,473
Events in quadrant D2,652,274229,374

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090981
B097471
C097842
D093551

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A208630.143816%
B208690.431448%
C208540.191847%
D2086100.479386%

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 2541 2087 75 75 2.95% 3.59%
B 2541 2087 150 150 5.90% 7.19%
C 2540 2085 118 118 4.65% 5.66%
D 2541 2087 98 98 3.86% 4.70%

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 0 253 17200 102.33 664 666 161.6
A 11 79 4145 21.53 664 666 161.6
A 3 111 2043 8.52 664 666 161.6
B 5 191 48851 283.56 706 702 169.8
B 15 22 28543 163.96 706 702 169.8
B 0 220 9312 50.71 706 702 169.8
C 15 241 107351 558.96 678 705 190.8
C 9 52 17950 90.39 678 705 190.8
C 3 79 10248 50.02 678 705 190.8
D 12 22 104245 516.16 646 668 200.7
D 2 107 32915 160.7 646 668 200.7
D 10 125 24477 118.65 646 668 200.7

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