ASTROSAT CZTI

Data Quality Report

Orbit 17914

Creation date: 2024-06-27T17:42:32.472925
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/AS1A05_096T06_9000002668_17914cztM0_level2.evt modeM0/AS1A05_096T06_9000002668_17914cztM0_level2_quad_clean.evt
Size (bytes)608,054,400148,610,880
Size579.9 MB 141.7 MB
Events in quadrant A3,810,7731,001,374
Events in quadrant B4,327,5051,022,686
Events in quadrant C3,784,319979,632
Events in quadrant D5,927,310918,610

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171491
B0182661
C0168691
D0233521

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8324841.009130%
B83251762.114114%
C8325971.165165%
D83255306.366366%

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 8774 8325 12 12 0.14% 0.14%
B 8775 8326 72 72 0.82% 0.86%
C 8775 8325 0 0 0.00% 0.00%
D 8775 8326 413 413 4.71% 4.96%

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 99025 504.55 956 934 194.4
A 4 2 33356 166.77 956 934 194.4
A 0 226 8262 37.69 956 934 194.4
B 15 222 381765 2077.09 958 934 183.3
B 7 220 55959 300.11 958 934 183.3
B 5 143 45105 240.91 958 934 183.3
C 14 238 142375 655.87 926 930 215.7
C 9 54 15847 69.17 926 930 215.7
C 8 128 9584 40.13 926 930 215.7
D 7 238 1439112 6590.09 907 879 218.2
D 5 222 784546 3590.82 907 879 218.2
D 2 165 148604 676.89 907 879 218.2

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