ASTROSAT CZTI

Data Quality Report

Orbit 22525

Creation date: 2024-06-27T18:42:19.890449
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/AS1A08_003T01_9000003342_22525cztM0_level2.evt modeM0/AS1A08_003T01_9000003342_22525cztM0_level2_quad_clean.evt
Size (bytes)486,204,48092,085,120
Size463.7 MB 87.8 MB
Events in quadrant A3,352,443580,956
Events in quadrant B3,582,534595,402
Events in quadrant C3,452,936575,963
Events in quadrant D3,874,753562,234

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142732
B0150112
C0144742
D0159702

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6802871.279036%
B68031392.043216%
C68031582.322505%
D68031011.484639%

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 8922 6802 0 0 0.00% 0.00%
B 8923 6803 9 9 0.10% 0.13%
C 8923 6804 0 0 0.00% 0.00%
D 8923 6803 33 33 0.37% 0.49%

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 13 254 11354 59.55 869 850 176.4
A 0 226 7712 38.9 869 850 176.4
A 3 137 7490 37.64 869 850 176.4
B 15 33 138043 821.5 869 847 167.0
B 12 111 19855 113.82 869 847 167.0
B 11 111 17694 100.88 869 847 167.0
C 14 238 133191 667.11 842 848 198.4
C 0 10 29018 142.0 842 848 198.4
C 10 22 6424 28.1 842 848 198.4
D 1 52 390281 1896.58 847 825 205.3
D 15 145 76446 368.26 847 825 205.3
D 13 172 73526 354.04 847 825 205.3

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