ASTROSAT CZTI

Data Quality Report

Orbit 09454

Creation date: 2024-06-27T15:46:19.676891
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/AS1T01_177T01_9000001344_09454cztM0_level2.evt modeM0/AS1T01_177T01_9000001344_09454cztM0_level2_quad_clean.evt
Size (bytes)481,973,76094,452,480
Size459.6 MB 90.1 MB
Events in quadrant A3,748,789603,073
Events in quadrant B3,375,379604,208
Events in quadrant C3,418,966589,752
Events in quadrant D3,582,170580,091

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157523
B0146052
C0150692
D0154562

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69401251.801153%
B6940731.051873%
C69401392.002882%
D6940981.412104%

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 8880 6942 22 22 0.25% 0.32%
B 8880 6942 2 2 0.02% 0.03%
C 8880 6942 66 66 0.74% 0.95%
D 8880 6942 35 35 0.39% 0.50%

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 351264 2039.5 834 817 171.8
A 14 111 116858 675.32 834 817 171.8
A 8 15 42488 242.51 834 817 171.8
B 0 214 48059 293.75 835 813 160.8
B 5 255 22323 133.74 835 813 160.8
B 0 229 22183 132.87 835 813 160.8
C 4 254 291919 1551.92 799 802 187.6
C 9 68 7146 33.82 799 802 187.6
C 13 61 6104 28.26 799 802 187.6
D 1 52 170689 829.87 801 780 204.7
D 8 195 93433 452.54 801 780 204.7
D 13 104 92130 446.17 801 780 204.7

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