ASTROSAT CZTI

Data Quality Report

Orbit 36729

Creation date: 2024-06-27T21:30:52.984497
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/AS1A11_101T01_9000005238_36729cztM0_level2.evt modeM0/AS1A11_101T01_9000005238_36729cztM0_level2_quad_clean.evt
Size (bytes)530,210,88056,756,160
Size505.6 MB 54.1 MB
Events in quadrant A2,961,001337,966
Events in quadrant B3,192,512342,373
Events in quadrant C3,940,415325,617
Events in quadrant D5,560,503296,431

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125153
B0131662
C0153182
D0205802

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5951240.403294%
B5951350.588136%
C59512834.755503%
D59514928.267518%

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 7293 5952 14 14 0.19% 0.24%
B 7293 5952 19 19 0.26% 0.32%
C 7293 5952 222 222 3.04% 3.73%
D 7293 5952 477 477 6.54% 8.01%

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 10 83 234515 1702.02 676 661 137.4
A 9 143 81490 588.29 676 661 137.4
A 7 3 21617 152.52 676 661 137.4
B 5 255 139144 1066.3 671 652 129.9
B 0 189 98067 750.04 671 652 129.9
B 0 229 69184 527.65 671 652 129.9
C 14 254 701280 4694.68 637 641 149.2
C 0 10 450896 3016.96 637 641 149.2
C 15 214 262705 1755.98 637 641 149.2
D 1 20 1902080 12126.84 637 616 156.8
D 12 233 412895 2629.36 637 616 156.8
D 2 153 159180 1011.26 637 616 156.8

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