ASTROSAT CZTI

Data Quality Report

Orbit 31840

Creation date: 2024-06-27T20:33:22.427166
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/AS1A10_109T01_9000004646_31840cztM0_level2.evt modeM0/AS1A10_109T01_9000004646_31840cztM0_level2_quad_clean.evt
Size (bytes)571,642,56079,853,760
Size545.2 MB 76.2 MB
Events in quadrant A3,421,000503,986
Events in quadrant B5,493,120500,664
Events in quadrant C3,908,812467,690
Events in quadrant D4,019,556462,607

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142752
B0215472
C0156792
D0162652

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6941690.994093%
B69411592.290736%
C69415177.448494%
D69412203.169572%

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 8656 6943 0 0 0.00% 0.00%
B 8656 6943 21 21 0.24% 0.30%
C 8656 6943 29 29 0.34% 0.42%
D 8656 6943 166 166 1.92% 2.39%

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 13 254 12418 65.27 883 868 176.9
A 13 6 12183 63.95 883 868 176.9
A 3 137 9196 47.07 883 868 176.9
B 6 159 1813426 10767.35 869 847 168.3
B 10 245 241971 1432.36 869 847 168.3
B 12 111 21253 121.22 869 847 168.3
C 14 238 244377 1260.55 822 828 193.2
C 0 10 215124 1109.14 822 828 193.2
C 14 254 145366 748.09 822 828 193.2
D 12 218 499815 2493.74 841 818 200.1
D 8 195 218392 1087.33 841 818 200.1
D 2 250 80575 398.59 841 818 200.1

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