ASTROSAT CZTI

Data Quality Report

Orbit 25913

Creation date: 2024-06-27T19:22:44.872590
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_068T01_9000003756_25913cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25913cztM0_level2_quad_clean.evt
Size (bytes)661,677,12098,245,440
Size631.0 MB 93.7 MB
Events in quadrant A8,955,526580,695
Events in quadrant B3,409,070661,131
Events in quadrant C3,334,063625,404
Events in quadrant D3,872,589625,832

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0314400
B0144430
C0144150
D0162120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6914157822.823257%
B6914660.954585%
C6914650.940121%
D6914440.636390%

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 7584 6915 1298 1298 17.11% 18.77%
B 7584 6915 2 2 0.03% 0.03%
C 7584 6915 1 1 0.01% 0.01%
D 7584 6915 47 47 0.62% 0.68%

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 0 13 5878203 36580.0 796 779 160.7
A 13 254 9131 51.98 796 779 160.7
A 3 137 7349 40.89 796 779 160.7
B 0 219 78385 483.26 842 823 160.5
B 12 111 19747 117.91 842 823 160.5
B 11 111 17562 104.3 842 823 160.5
C 14 238 130608 690.63 802 807 187.9
C 2 16 39233 204.45 802 807 187.9
C 3 233 38816 202.23 802 807 187.9
D 1 52 744385 3784.39 814 792 196.5
D 2 234 28526 141.15 814 792 196.5
D 7 80 13124 62.76 814 792 196.5

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