ASTROSAT CZTI

Data Quality Report

Orbit 09266

Creation date: 2024-06-27T15:43:36.866346
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_091T05_9000001300_09266cztM0_level2.evt modeM0/AS1A03_091T05_9000001300_09266cztM0_level2_quad_clean.evt
Size (bytes)493,536,96067,824,000
Size470.7 MB 64.7 MB
Events in quadrant A3,956,935394,195
Events in quadrant B3,509,283402,781
Events in quadrant C3,192,995393,670
Events in quadrant D3,814,619377,855

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161212
B0149151
C0143001
D0159981

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69602253.232759%
B69601632.341954%
C6960931.336207%
D69601782.557471%

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 7680 6961 55 55 0.72% 0.79%
B 7680 6961 3 3 0.04% 0.04%
C 7680 6961 0 0 0.00% 0.00%
D 7680 6961 65 65 0.85% 0.93%

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 341375 1974.15 833 814 172.5
A 5 16 278672 1610.68 833 814 172.5
A 15 174 44160 251.27 833 814 172.5
B 5 250 87031 531.66 843 823 162.1
B 0 214 72733 443.48 843 823 162.1
B 0 245 33283 200.19 843 823 162.1
C 9 68 7893 37.36 814 818 189.4
C 14 67 7593 35.77 814 818 189.4
C 13 61 6052 27.64 814 818 189.4
D 1 52 566847 2617.01 802 782 216.3
D 2 136 122983 564.96 802 782 216.3
D 7 71 30277 136.36 802 782 216.3

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