ASTROSAT CZTI

Data Quality Report

Orbit 15988

Creation date: 2024-06-27T17:16:10.560862
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/AS1G08_046T09_9000002358_15988cztM0_level2.evt modeM0/AS1G08_046T09_9000002358_15988cztM0_level2_quad_clean.evt
Size (bytes)1,034,058,240222,845,760
Size986.2 MB 212.5 MB
Events in quadrant A7,362,5801,445,522
Events in quadrant B8,021,6661,446,599
Events in quadrant C7,420,4641,383,389
Events in quadrant D7,435,6751,377,795

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0324254
B0339893
C0325053
D0333463

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03240
B03240
C03240
D03240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A158931861.170327%
B158932561.610772%
C158932341.472346%
D158932331.466054%

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 17734 15894 5 5 0.03% 0.03%
B 17734 15894 47 47 0.27% 0.30%
C 17734 15894 24 24 0.14% 0.15%
D 17734 15894 97 97 0.55% 0.61%

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 15 239 82256 212.96 1868 1826 377.7
A 13 210 69381 178.87 1868 1826 377.7
A 9 143 21315 51.6 1868 1826 377.7
B 7 220 269258 751.06 1861 1810 356.1
B 4 216 99401 274.06 1861 1810 356.1
B 0 189 60121 163.75 1861 1810 356.1
C 14 238 273272 651.58 1785 1789 416.7
C 3 233 118102 279.16 1785 1789 416.7
C 0 207 32932 74.75 1785 1789 416.7
D 10 70 265058 598.29 1816 1761 440.1
D 2 152 107868 241.11 1816 1761 440.1
D 12 218 88984 198.2 1816 1761 440.1

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