ASTROSAT CZTI

Data Quality Report

Orbit 16168

Creation date: 2024-06-27T17:18:53.229068
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/AS1T02_109T01_9000002386_16168cztM0_level2.evt modeM0/AS1T02_109T01_9000002386_16168cztM0_level2_quad_clean.evt
Size (bytes)546,932,16069,491,520
Size521.6 MB 66.3 MB
Events in quadrant A4,426,811423,742
Events in quadrant B3,590,532430,300
Events in quadrant C4,737,028399,269
Events in quadrant D3,378,975407,386

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170873
B0144002
C0179962
D0137912

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63574376.874312%
B63571131.777568%
C63574266.701274%
D6357671.053956%

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 7668 6359 301 301 3.93% 4.73%
B 7668 6359 23 23 0.30% 0.36%
C 7668 6359 207 207 2.70% 3.26%
D 7668 6359 8 8 0.10% 0.13%

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 15 174 1091755 6408.49 853 837 170.2
A 0 253 42506 244.78 853 837 170.2
A 9 143 8932 47.55 853 837 170.2
B 0 197 53507 325.86 861 845 161.6
B 0 189 34116 205.87 861 845 161.6
B 4 142 32214 194.11 861 845 161.6
C 3 233 1396279 7447.05 816 823 187.4
C 14 238 128779 682.86 816 823 187.4
C 0 207 18040 91.88 816 823 187.4
D 7 38 103444 493.9 850 825 207.8
D 2 234 24773 115.26 850 825 207.8
D 10 70 21045 97.32 850 825 207.8

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