ASTROSAT CZTI

Data Quality Report

Orbit 18892

Creation date: 2024-06-27T17:56:11.834363
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/AS1A06_003T07_9000002818_18892cztM0_level2.evt modeM0/AS1A06_003T07_9000002818_18892cztM0_level2_quad_clean.evt
Size (bytes)644,768,64090,668,160
Size614.9 MB 86.5 MB
Events in quadrant A3,263,071659,886
Events in quadrant B9,092,710382,469
Events in quadrant C3,081,317635,299
Events in quadrant D3,655,998621,357

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138111
B0313381
C0131731
D0151222

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63891221.909532%
B6389349254.656441%
C63891231.925184%
D63882093.271760%

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 7019 6390 23 23 0.33% 0.36%
B 7018 6389 1642 1642 23.40% 25.70%
C 7019 6390 1 1 0.01% 0.02%
D 7018 6389 101 101 1.44% 1.58%

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 6 16 286861 1855.04 771 755 154.2
A 13 254 8379 49.43 771 755 154.2
A 0 226 6567 37.68 771 755 154.2
B 3 112 6807668 69328.18 513 500 98.2
B 7 220 122333 1240.82 513 500 98.2
B 0 189 72327 731.53 513 500 98.2
C 14 238 114469 666.09 737 742 170.7
C 3 233 72147 418.21 737 742 170.7
C 0 207 21793 123.29 737 742 170.7
D 1 52 425146 2320.59 746 722 182.9
D 7 96 160743 874.93 746 722 182.9
D 10 199 93774 508.77 746 722 182.9

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