ASTROSAT CZTI

Data Quality Report

Orbit 37887

Creation date: 2024-06-27T21:45:44.775655
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/AS1C07_001T12_9000005352_37887cztM0_level2.evt modeM0/AS1C07_001T12_9000005352_37887cztM0_level2_quad_clean.evt
Size (bytes)482,155,20077,247,360
Size459.8 MB 73.7 MB
Events in quadrant A2,862,442520,736
Events in quadrant B3,538,929508,931
Events in quadrant C2,911,847490,490
Events in quadrant D4,897,581415,737

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121594
B0143762
C0123035
D0185925

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5762110.190906%
B57631813.140725%
C5761430.746398%
D576163310.987676%

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 7165 5764 6 6 0.08% 0.10%
B 7165 5764 155 155 2.16% 2.69%
C 7165 5763 39 39 0.54% 0.68%
D 7165 5763 481 481 6.71% 8.35%

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 374386 2914.41 633 619 128.2
A 13 6 15110 112.99 633 619 128.2
A 12 189 9574 69.83 633 619 128.2
B 5 172 752799 6332.27 622 606 118.8
B 0 213 149244 1251.3 622 606 118.8
B 0 183 101033 845.44 622 606 118.8
C 15 214 243912 1702.22 613 616 142.9
C 0 10 158424 1104.1 613 616 142.9
C 14 254 103278 718.27 613 616 142.9
D 2 249 1054324 7270.59 592 575 144.9
D 2 250 496447 3421.38 592 575 144.9
D 12 233 302279 2081.68 592 575 144.9

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