ASTROSAT CZTI

Data Quality Report

Orbit 20210718_C06_006T05_9000004550_level2

Creation date: 2025-12-27T10:22:24.198984
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/AS1C06_006T05_9000004550cztM0_level2.fits modeM0/AS1C06_006T05_9000004550cztM0_level2_quad_clean.evt
Size (bytes)88,865,28066,453,120
Size84.7 MB 63.4 MB
Events in quadrant A554,186370,129
Events in quadrant B505,642349,197
Events in quadrant C527,238343,347
Events in quadrant D476,108320,831

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01860
B01880
C01860
D01860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193450
B0296740
C0196290
D0221080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A90442472.731092%
B90326427.108060%
C90503984.397790%
D90472242.475959%

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 9888 9051 0 0 0.00% 0.00%
B 9888 9037 0 0 0.00% 0.00%
C 9888 9065 0 0 0.00% 0.00%
D 9888 9064 0 0 0.00% 0.00%

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 29 526 10.41 144 136 37.5
A 7 110 441 8.14 144 136 37.5
A 0 30 413 7.4 144 136 37.5
B 2 9 429 10.5 133 127 28.8
B 2 8 363 8.21 133 127 28.8
B 5 225 355 7.93 133 127 28.8
C 9 233 366 6.36 139 130 37.1
C 3 126 356 6.09 139 130 37.1
C 2 191 356 6.09 139 130 37.1
D 6 8 363 6.35 135 124 37.6
D 4 246 353 6.09 135 124 37.6
D 4 160 352 6.06 135 124 37.6

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