ASTROSAT CZTI

Data Quality Report

Orbit 40488

Creation date: 2024-06-27T22:16:43.144456
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/AS1A12_022T01_9000005540_40488cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40488cztM0_level2_quad_clean.evt
Size (bytes)323,660,16081,299,520
Size308.7 MB 77.5 MB
Events in quadrant A2,777,478613,457
Events in quadrant B2,522,203626,936
Events in quadrant C2,439,608590,217
Events in quadrant D3,837,308270,593

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113004
B0108912
C0103902
D0152225

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A514880.155400%
B5149200.388425%
C514920.038842%
D5148292356.779332%

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 7093 5150 1 1 0.01% 0.02%
B 7093 5150 12 12 0.17% 0.23%
C 7093 5150 1 1 0.01% 0.02%
D 7094 5149 235 235 3.31% 4.56%

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 10 83 467032 3957.95 584 574 117.9
A 12 189 33970 283.37 584 574 117.9
A 9 191 10713 86.03 584 574 117.9
B 4 170 217812 1971.46 575 561 110.2
B 3 112 16327 143.07 575 561 110.2
B 12 111 13682 119.07 575 561 110.2
C 15 214 228496 1778.01 560 565 128.2
C 9 187 10786 79.73 560 565 128.2
C 14 254 6558 46.75 560 565 128.2
D 2 250 1475801 15233.18 390 378 96.9
D 12 191 413591 4266.26 390 378 96.9
D 12 218 113882 1171.88 390 378 96.9

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