ASTROSAT CZTI

Data Quality Report

Orbit 24780

Creation date: 2024-06-27T19:09:48.671691
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/AS1A07_147T01_9000003624_24780cztM0_level2.evt modeM0/AS1A07_147T01_9000003624_24780cztM0_level2_quad_clean.evt
Size (bytes)523,560,96065,217,600
Size499.3 MB 62.2 MB
Events in quadrant A3,368,209414,209
Events in quadrant B5,075,435360,103
Events in quadrant C3,322,964392,445
Events in quadrant D3,675,070380,820

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135352
B0189762
C0133982
D0147062

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6110610.998363%
B611077712.716858%
C6110751.227496%
D6110821.342062%

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 7425 6110 0 0 0.00% 0.00%
B 7425 6110 635 635 8.55% 10.39%
C 7425 6110 0 0 0.00% 0.00%
D 7425 6110 37 37 0.50% 0.61%

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 8902 46.41 873 858 173.3
A 12 96 7935 40.83 873 858 173.3
A 0 226 7391 37.69 873 858 173.3
B 3 64 1832917 12004.1 820 803 152.6
B 12 111 18222 114.13 820 803 152.6
B 11 111 16560 103.24 820 803 152.6
C 14 238 132744 705.23 816 826 187.1
C 3 233 5982 27.56 816 826 187.1
C 13 61 5696 26.03 816 826 187.1
D 1 52 447642 2231.52 825 804 200.2
D 8 195 124226 616.37 825 804 200.2
D 2 234 21791 104.81 825 804 200.2

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