ASTROSAT CZTI

Data Quality Report

Orbit 11741

Creation date: 2024-06-27T16:17:50.529261
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/AS1A04_167T04_9000001734_11741cztM0_level2.evt modeM0/AS1A04_167T04_9000001734_11741cztM0_level2_quad_clean.evt
Size (bytes)571,780,80083,191,680
Size545.3 MB 79.3 MB
Events in quadrant A3,711,572510,404
Events in quadrant B4,559,402506,106
Events in quadrant C3,287,738527,851
Events in quadrant D5,284,384488,172

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153063
B0178572
C0144012
D0206322

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69832103.007303%
B69834065.814120%
C69831241.775741%
D69832563.666046%

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 7684 6985 0 0 0.00% 0.00%
B 7684 6985 152 152 1.98% 2.18%
C 7684 6985 0 0 0.00% 0.00%
D 7684 6985 108 108 1.41% 1.55%

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 8 15 109705 627.98 854 834 173.4
A 1 162 107171 613.37 854 834 173.4
A 1 178 57943 329.41 854 834 173.4
B 4 239 907642 5570.71 849 827 162.8
B 15 204 158166 966.56 849 827 162.8
B 3 64 129328 789.4 849 827 162.8
C 13 61 6087 26.92 843 849 194.6
C 12 4 2573 8.86 843 849 194.6
C 3 202 2063 6.24 843 849 194.6
D 8 195 965450 4854.82 829 805 198.7
D 1 52 663473 3335.05 829 805 198.7
D 9 85 257316 1290.96 829 805 198.7

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