ASTROSAT CZTI

Data Quality Report

Orbit 11858

Creation date: 2024-06-27T16:19:14.316170
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/AS1A04_088T03_9000001750_11858cztM0_level2.evt modeM0/AS1A04_088T03_9000001750_11858cztM0_level2_quad_clean.evt
Size (bytes)494,596,80088,824,960
Size471.7 MB 84.7 MB
Events in quadrant A3,508,080561,945
Events in quadrant B4,120,575553,361
Events in quadrant C3,120,498556,007
Events in quadrant D3,753,420529,988

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149152
B0167511
C0143641
D0161311

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70102143.052782%
B70103865.506419%
C70101391.982882%
D70102753.922967%

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 7181 7012 3 3 0.04% 0.04%
B 7181 7012 127 127 1.77% 1.81%
C 7181 7012 1 1 0.01% 0.01%
D 7181 7012 100 100 1.39% 1.43%

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 1 162 107142 631.52 822 805 168.4
A 8 15 69244 406.45 822 805 168.4
A 1 178 53453 312.67 822 805 168.4
B 4 239 704722 4473.52 811 789 157.4
B 15 204 85235 536.66 811 789 157.4
B 4 173 47806 298.8 811 789 157.4
C 8 128 8234 40.3 795 796 184.6
C 13 61 5817 27.2 795 796 184.6
C 8 112 4279 18.87 795 796 184.6
D 1 52 536290 2832.68 788 764 189.1
D 13 104 130660 687.09 788 764 189.1
D 13 249 45486 236.56 788 764 189.1

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