ASTROSAT CZTI

Data Quality Report

Orbit 12699

Creation date: 2024-06-27T16:31:15.667169
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/AS1A04_174T01_9000001876_12699cztM0_level2.evt modeM0/AS1A04_174T01_9000001876_12699cztM0_level2_quad_clean.evt
Size (bytes)555,042,24092,183,040
Size529.3 MB 87.9 MB
Events in quadrant A3,463,436597,959
Events in quadrant B5,912,230505,612
Events in quadrant C3,459,398598,747
Events in quadrant D3,469,349571,182

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152932
B0224151
C0153361
D0156061

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7442430.577802%
B7442100913.558183%
C7442180.241870%
D7442270.362806%

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 7818 7445 1 1 0.01% 0.01%
B 7818 7445 845 845 10.81% 11.35%
C 7818 7445 4 4 0.05% 0.05%
D 7818 7445 19 19 0.24% 0.26%

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 12 189 23162 121.05 891 870 184.2
A 8 15 8422 41.01 891 870 184.2
A 0 226 7860 37.96 891 870 184.2
B 4 239 2522504 15995.5 817 796 157.7
B 3 209 52184 325.96 817 796 157.7
B 0 214 31393 194.08 817 796 157.7
C 15 208 43678 210.0 873 883 203.8
C 13 61 6373 26.94 873 883 203.8
C 8 128 6198 26.08 873 883 203.8
D 1 52 86842 410.91 864 841 209.3
D 7 55 45559 213.66 864 841 209.3
D 2 234 29380 136.36 864 841 209.3

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