ASTROSAT CZTI

Data Quality Report

Orbit 28558

Creation date: 2024-06-27T19:53:19.611938
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_102T07_9000004102_28558cztM0_level2.evt modeM0/AS1A10_102T07_9000004102_28558cztM0_level2_quad_clean.evt
Size (bytes)2,740,495,680444,507,840
Size2.6 GB 423.9 MB
Events in quadrant A17,480,3932,912,342
Events in quadrant B17,362,2182,926,689
Events in quadrant C16,170,2332,781,479
Events in quadrant D29,786,5352,601,034

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0727265
B0720915
C0686055
D011004310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06600
B06600
C06600
D06600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0450
B0450
C0450
D0450

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A326346642.034688%
B326357502.298146%
C326355171.584189%
D3263429789.125452%

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 44648 32634 190 190 0.43% 0.58%
B 44649 32635 241 241 0.54% 0.74%
C 44649 32635 5 5 0.01% 0.02%
D 44648 32634 2906 2906 6.51% 8.90%

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 15 174 1693205 2072.78 4080 3996 814.9
A 13 254 53278 60.47 4080 3996 814.9
A 3 137 39822 43.96 4080 3996 814.9
B 4 171 793220 1026.84 4033 3942 768.6
B 10 245 445331 574.24 4033 3942 768.6
B 10 246 155787 197.55 4033 3942 768.6
C 14 238 625369 683.69 3878 3907 909.0
C 7 247 252914 273.94 3878 3907 909.0
C 3 233 162566 174.54 3878 3907 909.0
D 1 52 10966209 12202.88 3817 3726 898.4
D 8 195 3966623 4411.3 3817 3726 898.4
D 10 199 123998 133.88 3817 3726 898.4

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