ASTROSAT CZTI

Data Quality Report

Orbit 21379

Creation date: 2024-06-27T18:27:05.614656
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/AS1C04_001T01_9000003156_21379cztM0_level2.evt modeM0/AS1C04_001T01_9000003156_21379cztM0_level2_quad_clean.evt
Size (bytes)540,498,240125,017,920
Size515.5 MB 119.2 MB
Events in quadrant A3,563,220874,110
Events in quadrant B3,507,798868,948
Events in quadrant C3,412,325813,207
Events in quadrant D5,441,797773,524

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145422
B0144682
C0140152
D0205242

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6552841.282051%
B6552701.068376%
C65521011.541514%
D655265610.012210%

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 7842 6552 7 7 0.09% 0.11%
B 7842 6552 5 5 0.06% 0.08%
C 7842 6552 1 1 0.01% 0.02%
D 7842 6552 542 542 6.91% 8.27%

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 5 168 99644 579.67 870 855 170.4
A 5 16 92992 540.64 870 855 170.4
A 13 254 10739 58.0 870 855 170.4
B 0 190 58845 370.59 851 831 156.5
B 0 230 54559 343.21 851 831 156.5
B 0 228 22770 140.14 851 831 156.5
C 14 238 130976 689.81 817 823 188.7
C 3 233 84131 441.53 817 823 188.7
C 10 91 9945 48.35 817 823 188.7
D 1 52 1251882 6375.79 816 793 196.2
D 12 235 398217 2025.35 816 793 196.2
D 13 153 180236 914.47 816 793 196.2

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