ASTROSAT CZTI

Data Quality Report

Orbit 46527

Creation date: 2024-06-27T23:24:16.479496
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_091T05_9000006224_46527cztM0_level2.fits modeM0/AS1A13_091T05_9000006224_46527cztM0_level2_quad_clean.evt
Size (bytes)689,984,64097,891,200
Size658.0 MB 93.4 MB
Events in quadrant A7,701,923694,514
Events in quadrant B8,226,680428,365
Events in quadrant C5,323,090699,272
Events in quadrant D3,753,338660,091

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0276342
B0291582
C0205912
D0161562

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69114736.844161%
B6911313045.290117%
C69113294.760527%
D6911981.418029%

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 7715 6911 298 298 3.86% 4.31%
B 7716 6911 1397 1397 18.11% 20.21%
C 7716 6912 363 363 4.70% 5.25%
D 7716 6912 85 85 1.10% 1.23%

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 3459262 22500.44 744 727 153.7
A 9 191 1097703 7136.67 744 727 153.7
A 13 248 159252 1031.33 744 727 153.7
B 12 33 5325269 50024.0 531 516 106.4
B 5 32 447721 4201.32 531 516 106.4
B 3 112 79915 745.92 531 516 106.4
C 9 54 2249577 12711.63 743 748 176.9
C 14 254 109885 616.9 743 748 176.9
C 12 249 39162 217.14 743 748 176.9
D 1 47 187178 989.1 747 722 188.5
D 2 37 100894 531.38 747 722 188.5
D 5 171 100119 527.27 747 722 188.5

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