ASTROSAT CZTI

Data Quality Report

Orbit 45042

Creation date: 2024-06-27T23:09:18.682698
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/AS1A13_020T01_9000006040_45042cztM0_level2.fits modeM0/AS1A13_020T01_9000006040_45042cztM0_level2_quad_clean.evt
Size (bytes)692,297,280108,152,640
Size660.2 MB 103.1 MB
Events in quadrant A5,741,266751,088
Events in quadrant B4,901,713742,070
Events in quadrant C4,304,473731,629
Events in quadrant D10,141,653565,296

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219811
B0191821
C0176071
D0350081

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69482093.008060%
B69484987.167530%
C69493655.252554%
D6949169424.377608%

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 7708 6949 7 7 0.09% 0.10%
B 7708 6949 246 246 3.19% 3.54%
C 7709 6950 252 252 3.27% 3.63%
D 7709 6950 1327 1327 17.21% 19.09%

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 10 83 2550046 15205.94 800 782 167.6
A 10 248 52366 307.69 800 782 167.6
A 13 248 27233 157.78 800 782 167.6
B 0 189 1203582 7738.11 787 763 155.4
B 12 48 136794 875.13 787 763 155.4
B 5 255 115065 735.34 787 763 155.4
C 14 254 1172858 6392.12 774 778 183.4
C 12 2 77067 416.05 774 778 183.4
C 1 3 22949 120.91 774 778 183.4
D 13 174 2708839 15018.33 720 699 180.3
D 5 235 1086890 6023.61 720 699 180.3
D 11 241 623681 3454.82 720 699 180.3

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