ASTROSAT CZTI

Data Quality Report

Orbit 26521

Creation date: 2024-06-27T19:30:01.045583
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/AS1C05_019T04_9000003838_26521cztM0_level2.evt modeM0/AS1C05_019T04_9000003838_26521cztM0_level2_quad_clean.evt
Size (bytes)589,253,760120,332,160
Size562.0 MB 114.8 MB
Events in quadrant A3,452,395815,820
Events in quadrant B3,548,468830,716
Events in quadrant C3,834,779800,479
Events in quadrant D6,535,296709,389

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149140
B0151270
C0159880
D0243480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7001610.871304%
B70011031.471218%
C70011712.442508%
D7001117616.797600%

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 7621 7002 16 16 0.21% 0.23%
B 7621 7001 15 15 0.20% 0.21%
C 7621 7002 11 11 0.14% 0.16%
D 7621 7002 1018 1018 13.36% 14.54%

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 0 13 210365 1255.37 834 815 166.9
A 6 16 18786 107.66 834 815 166.9
A 13 254 13377 75.26 834 815 166.9
B 5 172 108749 685.0 837 815 157.6
B 0 189 45298 282.31 837 815 157.6
B 3 112 35584 220.66 837 815 157.6
C 3 233 342358 1798.04 813 816 190.0
C 4 254 179556 940.97 813 816 190.0
C 14 238 129695 678.48 813 816 190.0
D 7 80 1736100 9253.48 755 736 187.5
D 1 52 1710815 9118.65 755 736 187.5
D 12 233 110631 585.99 755 736 187.5

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