ASTROSAT CZTI

Data Quality Report

Orbit 28186

Creation date: 2024-06-27T19:47:03.773583
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/AS1A10_021T08_9000004042_28186cztM0_level2.evt modeM0/AS1A10_021T08_9000004042_28186cztM0_level2_quad_clean.evt
Size (bytes)748,647,36091,558,080
Size714.0 MB 87.3 MB
Events in quadrant A3,486,199622,842
Events in quadrant B3,774,604623,530
Events in quadrant C3,615,850584,710
Events in quadrant D11,300,120430,995

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150690
B0159110
C0154100
D0384320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73171702.323357%
B73222253.072931%
C73222092.854411%
D7309312742.782870%

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 7833 7334 0 0 0.00% 0.00%
B 7833 7337 19 19 0.24% 0.26%
C 7834 7339 4 4 0.05% 0.05%
D 7832 7323 2936 2936 37.49% 40.09%

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 15 174 21017 111.8 896 876 180.1
A 13 254 11141 56.98 896 876 180.1
A 3 137 8658 43.2 896 876 180.1
B 10 246 86817 510.54 880 856 168.4
B 15 32 80395 472.4 880 856 168.4
B 12 17 40891 237.78 880 856 168.4
C 14 238 134694 678.64 844 849 197.2
C 3 233 121922 613.89 844 849 197.2
C 15 208 64945 324.99 844 849 197.2
D 1 52 7720189 49444.62 648 629 156.1
D 7 80 609256 3898.32 648 629 156.1
D 5 222 165646 1056.95 648 629 156.1

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