ASTROSAT CZTI

Data Quality Report

Orbit 10731

Creation date: 2024-06-27T16:03:02.198520
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/AS1A03_078T01_9000001546_10731cztM0_level2.evt modeM0/AS1A03_078T01_9000001546_10731cztM0_level2_quad_clean.evt
Size (bytes)739,278,72095,760,000
Size705.0 MB 91.3 MB
Events in quadrant A3,821,781649,997
Events in quadrant B4,206,839669,906
Events in quadrant C3,477,125671,210
Events in quadrant D10,372,109383,114

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186601894
B0194591844
C0170951128
D0418556145

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016810
B01688
C01686
D016810

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75802142.823219%
B75893164.163921%
C7686961.249024%
D7189271437.752121%

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 8623 7998 8 8 0.09% 0.10%
B 8623 7995 52 52 0.60% 0.65%
C 8623 8068 2 2 0.02% 0.02%
D 8622 7611 2219 2219 25.74% 29.16%

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 15 239 311713 1687.05 890 866 184.3
A 14 254 25831 135.49 890 866 184.3
A 1 162 16058 82.45 890 866 184.3
B 4 239 578834 3289.67 894 867 175.7
B 4 81 46812 261.51 894 867 175.7
B 0 214 35527 197.28 894 867 175.7
C 14 234 12231 54.7 881 882 207.5
C 8 128 11083 49.17 881 882 207.5
C 13 61 6673 27.91 881 882 207.5
D 1 52 7380046 49741.77 608 590 148.4
D 10 172 297900 2004.04 608 590 148.4
D 12 233 98988 663.26 608 590 148.4

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