ASTROSAT CZTI

Data Quality Report

Orbit 46230

Creation date: 2024-06-27T23:20:35.560833
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/AS1A13_065T07_9000006188_46230cztM0_level2.fits modeM0/AS1A13_065T07_9000006188_46230cztM0_level2_quad_clean.evt
Size (bytes)466,038,720108,944,640
Size444.4 MB 103.9 MB
Events in quadrant A6,320,793717,551
Events in quadrant B3,518,733762,839
Events in quadrant C3,310,438718,917
Events in quadrant D3,590,833641,026

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231730
B0146280
C0145890
D0155540

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65732523.833866%
B6573691.049749%
C65731231.871292%
D65732573.909935%

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 7558 6573 48 48 0.64% 0.73%
B 7558 6573 20 20 0.26% 0.30%
C 7558 6574 117 117 1.55% 1.78%
D 7558 6574 243 243 3.22% 3.70%

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 3175630 20674.21 741 725 153.6
A 0 247 200172 1298.75 741 725 153.6
A 7 3 24641 155.74 741 725 153.6
B 3 112 401098 2727.83 748 724 146.8
B 8 234 51418 345.39 748 724 146.8
B 5 172 47849 321.07 748 724 146.8
C 14 254 282655 1646.17 723 727 171.3
C 12 2 178997 1040.91 723 727 171.3
C 1 3 32463 185.31 723 727 171.3
D 10 204 374260 2052.24 720 698 182.0
D 13 249 334977 1836.43 720 698 182.0
D 2 249 54029 292.99 720 698 182.0

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