ASTROSAT CZTI

Data Quality Report

Orbit 14726

Creation date: 2024-06-27T16:58:58.327214
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_048T01_9000002176_14726cztM0_level2.evt modeM0/AS1A04_048T01_9000002176_14726cztM0_level2_quad_clean.evt
Size (bytes)421,032,96079,067,520
Size401.5 MB 75.4 MB
Events in quadrant A3,024,289503,978
Events in quadrant B2,937,918504,606
Events in quadrant C3,252,862489,415
Events in quadrant D3,135,115484,368

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129121
B0125371
C0133211
D0135641

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5895791.340119%
B5895861.458863%
C58951141.933842%
D5895651.102629%

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 6101 5896 3 3 0.05% 0.05%
B 6101 5897 8 8 0.13% 0.14%
C 6101 5896 62 62 1.02% 1.05%
D 6101 5898 23 23 0.38% 0.39%

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 185429 1279.73 703 687 144.4
A 12 189 93364 641.99 703 687 144.4
A 9 143 18254 121.69 703 687 144.4
B 0 229 63673 459.92 701 682 137.0
B 0 205 35987 257.78 701 682 137.0
B 4 142 25277 179.58 701 682 137.0
C 3 233 377891 2398.81 673 675 157.3
C 0 207 224391 1422.66 673 675 157.3
C 8 128 9530 56.31 673 675 157.3
D 12 16 478039 2647.41 675 658 180.3
D 2 152 38925 212.22 675 658 180.3
D 2 234 23386 126.04 675 658 180.3

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