ASTROSAT CZTI

Data Quality Report

Orbit 20139

Creation date: 2024-06-27T18:11:45.895796
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/AS1A05_180T01_9000002992_20139cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20139cztM0_level2_quad_clean.evt
Size (bytes)615,116,160110,194,560
Size586.6 MB 105.1 MB
Events in quadrant A5,147,133698,936
Events in quadrant B4,104,946731,332
Events in quadrant C3,948,202703,437
Events in quadrant D4,925,386686,536

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0199642
B0168081
C0162811
D0196251

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74276488.724923%
B74271712.302410%
C74281451.952073%
D74282583.473344%

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 7732 7429 390 390 5.04% 5.25%
B 7732 7429 65 65 0.84% 0.87%
C 7733 7430 1 1 0.01% 0.01%
D 7733 7430 183 183 2.37% 2.46%

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 14 238 1656646 9038.6 903 886 183.2
A 15 192 8830 43.37 903 886 183.2
A 0 226 7574 36.51 903 886 183.2
B 10 245 329924 1860.52 927 908 176.8
B 7 220 57363 319.24 927 908 176.8
B 0 197 45159 250.23 927 908 176.8
C 3 233 247063 1168.89 896 902 210.6
C 14 238 141593 668.07 896 902 210.6
C 8 208 49678 231.61 896 902 210.6
D 1 52 1266775 5741.03 905 880 220.5
D 7 96 65495 293.04 905 880 220.5
D 12 17 59021 263.68 905 880 220.5

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