ASTROSAT CZTI

Data Quality Report

Orbit 20189

Creation date: 2024-06-27T18:12:13.199018
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/AS1C04_001T01_9000002994_20189cztM0_level2.evt modeM0/AS1C04_001T01_9000002994_20189cztM0_level2_quad_clean.evt
Size (bytes)431,208,000127,497,600
Size411.2 MB 121.6 MB
Events in quadrant A3,028,891868,306
Events in quadrant B3,188,874874,558
Events in quadrant C3,074,135841,689
Events in quadrant D3,325,431824,176

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132771
B0137221
C0132991
D0144241

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6495360.554273%
B6496600.923645%
C6496550.846675%
D64961031.585591%

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 7605 6496 0 0 0.00% 0.00%
B 7606 6497 6 6 0.08% 0.09%
C 7606 6497 0 0 0.00% 0.00%
D 7606 6497 69 69 0.91% 1.06%

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 4 2 9045 52.68 781 764 157.2
A 14 238 8124 46.82 781 764 157.2
A 0 226 6829 38.58 781 764 157.2
B 0 197 49445 335.25 777 757 145.2
B 7 220 48050 325.65 777 757 145.2
B 12 111 17285 113.81 777 757 145.2
C 14 238 116306 664.07 745 748 174.0
C 3 233 51260 290.27 745 748 174.0
C 13 61 5301 26.16 745 748 174.0
D 15 0 126545 698.81 750 726 180.0
D 12 17 120055 662.76 750 726 180.0
D 11 255 93004 512.52 750 726 180.0

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