ASTROSAT CZTI

Data Quality Report

Orbit 31847

Creation date: 2024-06-27T20:33:27.206890
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_109T01_9000004646_31847cztM0_level2.evt modeM0/AS1A10_109T01_9000004646_31847cztM0_level2_quad_clean.evt
Size (bytes)556,338,240119,292,480
Size530.6 MB 113.8 MB
Events in quadrant A3,382,396827,418
Events in quadrant B4,998,912815,997
Events in quadrant C4,321,041760,074
Events in quadrant D3,717,937768,159

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139831
B0192141
C0172091
D0150921

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6321861.360544%
B63211582.499604%
C63205198.212025%
D63201221.930380%

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 7471 6322 0 0 0.00% 0.00%
B 7471 6322 2 2 0.03% 0.03%
C 7470 6321 87 87 1.16% 1.38%
D 7470 6321 19 19 0.25% 0.30%

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 13 6 15501 83.9 873 861 174.5
A 13 254 10777 56.83 873 861 174.5
A 3 137 8274 42.48 873 861 174.5
B 6 159 1606038 10015.61 850 832 160.3
B 0 190 42943 262.75 850 832 160.3
B 12 111 18974 113.2 850 832 160.3
C 0 10 588176 3101.79 813 823 189.4
C 3 233 243722 1282.74 813 823 189.4
C 14 238 202190 1063.41 813 823 189.4
D 8 195 318959 1590.9 846 829 200.0
D 12 218 77478 383.3 846 829 200.0
D 2 250 46936 230.57 846 829 200.0

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