ASTROSAT CZTI

Data Quality Report

Orbit 11475

Creation date: 2024-06-27T16:13:28.290888
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_021T04_9000001682_11475cztM0_level2.evt modeM0/AS1A04_021T04_9000001682_11475cztM0_level2_quad_clean.evt
Size (bytes)713,761,92080,550,720
Size680.7 MB 76.8 MB
Events in quadrant A6,084,069476,306
Events in quadrant B7,372,291466,141
Events in quadrant C3,226,701531,417
Events in quadrant D4,476,193493,169

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227323
B0265212
C0140052
D0176552

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67766569.681228%
B6776143821.221960%
C6776630.929752%
D67762423.571429%

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 8887 6779 328 328 3.69% 4.84%
B 8887 6779 736 736 8.28% 10.86%
C 8887 6779 0 0 0.00% 0.00%
D 8887 6779 151 151 1.70% 2.23%

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 5 2764984 16757.42 823 805 165.0
A 1 162 36738 217.84 823 805 165.0
A 9 143 32332 191.13 823 805 165.0
B 4 81 3200999 21283.32 792 775 150.4
B 4 239 723556 4806.91 792 775 150.4
B 0 85 199135 1319.21 792 775 150.4
C 13 61 6250 28.3 826 834 191.4
C 14 234 4877 21.13 826 834 191.4
C 3 9 2374 8.05 826 834 191.4
D 1 52 1081903 5593.58 814 792 193.3
D 2 120 110693 568.62 814 792 193.3
D 10 253 71866 367.73 814 792 193.3

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