ASTROSAT CZTI

Data Quality Report

Orbit 29460

Creation date: 2024-06-27T20:04:21.356834
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/AS1A10_102T08_9000004240_29460cztM0_level2.evt modeM0/AS1A10_102T08_9000004240_29460cztM0_level2_quad_clean.evt
Size (bytes)918,316,80081,858,240
Size875.8 MB 78.1 MB
Events in quadrant A4,198,555532,984
Events in quadrant B3,852,356543,884
Events in quadrant C4,222,524499,610
Events in quadrant D15,032,613380,098

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169402
B0159032
C0170292
D0498022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74883054.073184%
B74893224.299639%
C74896198.265456%
D7489408754.573374%

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 8723 7490 26 26 0.30% 0.35%
B 8724 7490 1 1 0.01% 0.01%
C 8724 7491 0 0 0.00% 0.00%
D 8724 7490 3759 3759 43.09% 50.19%

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 0 13 420455 2133.88 971 949 196.6
A 1 113 23128 112.81 971 949 196.6
A 13 254 14218 67.49 971 949 196.6
B 12 111 23556 119.76 963 935 188.9
B 11 111 21433 108.52 963 935 188.9
B 14 111 19723 99.46 963 935 188.9
C 3 233 278539 1300.2 909 915 213.5
C 14 238 242054 1129.33 909 915 213.5
C 14 254 138013 642.07 909 915 213.5
D 8 195 8117882 42710.18 793 770 190.1
D 1 52 2179338 11463.07 793 770 190.1
D 7 223 1058692 5566.52 793 770 190.1

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