ASTROSAT CZTI

Data Quality Report

Orbit 09331

Creation date: 2024-06-27T15:44:57.448828
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/AS1G07_076T02_9000001320_09331cztM0_level2.evt modeM0/AS1G07_076T02_9000001320_09331cztM0_level2_quad_clean.evt
Size (bytes)701,772,480107,493,120
Size669.3 MB 102.5 MB
Events in quadrant A5,119,579707,663
Events in quadrant B4,147,670712,442
Events in quadrant C4,531,284684,954
Events in quadrant D6,896,737577,484

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02087366
B01758135
C01902532
D02630535

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01722
C01720
D01720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82201782.165450%
B82321441.749271%
C82312452.976552%
D8231135816.498603%

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 10121 8247 9 9 0.09% 0.11%
B 10121 8247 6 6 0.06% 0.07%
C 10121 8247 94 94 0.93% 1.14%
D 10121 8248 1043 1043 10.31% 12.65%

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 8 5 1131925 5536.9 1010 989 204.3
A 1 162 42726 204.34 1010 989 204.3
A 15 174 22030 103.01 1010 989 204.3
B 0 214 69287 350.61 1010 987 194.8
B 0 219 42891 215.11 1010 987 194.8
B 0 246 40981 205.31 1010 987 194.8
C 4 254 727892 3229.43 969 973 225.1
C 13 61 7375 28.44 969 973 225.1
C 4 238 6669 25.31 969 973 225.1
D 1 52 3099996 14487.91 886 864 213.9
D 12 233 147209 684.14 886 864 213.9
D 7 71 104575 484.83 886 864 213.9

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