ASTROSAT CZTI

Data Quality Report

Orbit 31249

Creation date: 2024-06-27T20:25:36.002118
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_073T02_9000004522_31249cztM0_level2.evt modeM0/AS1A10_073T02_9000004522_31249cztM0_level2_quad_clean.evt
Size (bytes)657,555,84066,850,560
Size627.1 MB 63.8 MB
Events in quadrant A3,297,826412,587
Events in quadrant B5,843,262380,942
Events in quadrant C3,856,003393,880
Events in quadrant D6,480,048385,141

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137082
B0218162
C0154573
D0240122

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6466300.463965%
B64665989.248376%
C64652053.170920%
D64656169.528229%

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 7646 6467 0 0 0.00% 0.00%
B 7646 6467 163 163 2.13% 2.52%
C 7645 6466 56 56 0.73% 0.87%
D 7645 6466 500 500 6.54% 7.73%

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 11793 64.48 854 840 169.9
A 3 137 8187 43.25 854 840 169.9
A 0 226 7268 37.84 854 840 169.9
B 6 159 1654207 10715.16 822 804 154.3
B 12 18 348753 2254.94 822 804 154.3
B 4 80 306808 1983.11 822 804 154.3
C 0 10 232041 1227.42 817 822 188.4
C 3 233 160742 848.93 817 822 188.4
C 14 238 138179 729.16 817 822 188.4
D 8 195 3244786 15834.99 803 787 204.9
D 12 233 137129 665.53 803 787 204.9
D 2 250 43768 209.8 803 787 204.9

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