ASTROSAT CZTI

Data Quality Report

Orbit 18941

Creation date: 2024-06-27T17:56:50.725753
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/AS1T03_090T01_9000002822_18941cztM0_level2.evt modeM0/AS1T03_090T01_9000002822_18941cztM0_level2_quad_clean.evt
Size (bytes)908,156,160114,649,920
Size866.1 MB 109.3 MB
Events in quadrant A11,074,497669,927
Events in quadrant B4,837,032797,091
Events in quadrant C3,677,234772,848
Events in quadrant D7,395,159695,451

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0381522
B0195012
C0159182
D0272452

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7701275635.787560%
B77003424.441558%
C7701660.857032%
D7701111714.504610%

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 9216 7703 2051 2051 22.25% 26.63%
B 9215 7702 221 221 2.40% 2.87%
C 9216 7703 7 7 0.08% 0.09%
D 9216 7702 947 947 10.28% 12.30%

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 7998018 50816.8 770 750 157.4
A 6 16 85900 541.06 770 750 157.4
A 0 13 13210 79.17 770 750 157.4
B 3 112 1037370 6020.61 897 874 172.2
B 0 189 98887 569.32 897 874 172.2
B 7 220 70308 403.32 897 874 172.2
C 14 238 135807 666.15 864 869 202.6
C 3 233 91033 445.11 864 869 202.6
C 0 207 64419 313.73 864 869 202.6
D 7 238 3243097 15908.46 822 795 203.8
D 12 218 736771 3611.09 822 795 203.8
D 12 233 133228 649.79 822 795 203.8

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