ASTROSAT CZTI

Data Quality Report

Orbit 27054

Creation date: 2024-06-27T19:35:57.756986
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/AS1A09_120T02_9000003904_27054cztM0_level2.evt modeM0/AS1A09_120T02_9000003904_27054cztM0_level2_quad_clean.evt
Size (bytes)631,704,960112,864,320
Size602.4 MB 107.6 MB
Events in quadrant A5,389,970749,935
Events in quadrant B6,518,012737,561
Events in quadrant C3,204,773779,811
Events in quadrant D3,625,243744,005

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200020
B0231440
C0130780
D0145260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58075629.677975%
B5808145425.034435%
C5807731.257103%
D5807921.584295%

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 7152 5807 460 460 6.43% 7.92%
B 7152 5807 1089 1089 15.23% 18.75%
C 7151 5807 3 3 0.04% 0.05%
D 7151 5806 73 73 1.02% 1.26%

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 14 235 2427181 15718.79 766 755 154.4
A 2 79 10024 60.04 766 755 154.4
A 13 254 9538 56.89 766 755 154.4
B 0 189 3504192 25404.9 734 720 137.9
B 10 246 101213 728.71 734 720 137.9
B 0 219 25599 180.41 734 720 137.9
C 14 238 126105 690.7 776 786 181.4
C 10 22 34825 187.61 776 786 181.4
C 15 208 17460 91.9 776 786 181.4
D 1 52 521800 2852.05 767 751 182.7
D 2 250 171173 932.83 767 751 182.7
D 2 234 25300 134.37 767 751 182.7

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