ASTROSAT CZTI

Data Quality Report

Orbit 09020

Creation date: 2024-06-27T15:40:09.447730
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/AS1G07_029T02_9000001256_09020cztM0_level2.evt modeM0/AS1G07_029T02_9000001256_09020cztM0_level2_quad_clean.evt
Size (bytes)546,007,68099,570,240
Size520.7 MB 95.0 MB
Events in quadrant A5,442,115629,300
Events in quadrant B3,556,345647,445
Events in quadrant C3,192,153634,056
Events in quadrant D3,867,847614,360

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209672
B0150411
C0144541
D0161751

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70413985.652606%
B70411472.087772%
C7041961.363443%
D70411642.329215%

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 7601 7041 111 111 1.46% 1.58%
B 7601 7042 9 9 0.12% 0.13%
C 7601 7041 0 0 0.00% 0.00%
D 7601 7041 36 36 0.47% 0.51%

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 8 5 1979132 11602.18 835 817 170.5
A 15 239 81743 474.6 835 817 170.5
A 1 162 74955 434.8 835 817 170.5
B 4 80 75128 459.03 840 821 161.9
B 6 51 49279 299.35 840 821 161.9
B 0 214 47898 290.82 840 821 161.9
C 13 61 6211 28.21 816 822 191.1
C 8 128 4878 21.23 816 822 191.1
C 8 112 2769 10.19 816 822 191.1
D 6 225 347927 1632.66 818 796 212.6
D 7 71 108173 505.03 818 796 212.6
D 12 233 98565 459.84 818 796 212.6

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