ASTROSAT CZTI

Data Quality Report

Orbit 29940

Creation date: 2024-06-27T20:09:01.761650
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/AS1A10_058T01_9000004298_29940cztM0_level2.evt modeM0/AS1A10_058T01_9000004298_29940cztM0_level2_quad_clean.evt
Size (bytes)800,277,120102,493,440
Size763.2 MB 97.7 MB
Events in quadrant A4,040,455665,925
Events in quadrant B6,636,503656,231
Events in quadrant C5,434,953608,637
Events in quadrant D7,561,244593,330

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174012
B0255982
C0215172
D0281747

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83441251.498082%
B83452753.295386%
C83456637.944877%
D834495211.409396%

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 8844 8347 1 1 0.01% 0.01%
B 8845 8348 11 11 0.12% 0.13%
C 8845 8348 236 236 2.67% 2.83%
D 8844 8346 617 617 6.98% 7.39%

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 8 192 27884 128.52 1035 1013 209.1
A 13 254 17448 78.61 1035 1013 209.1
A 15 174 16681 74.94 1035 1013 209.1
B 6 159 2490987 12877.58 1016 991 193.4
B 5 255 94673 484.5 1016 991 193.4
B 12 111 23873 118.34 1016 991 193.4
C 3 233 1388945 6163.44 959 963 225.2
C 14 238 203211 898.1 959 963 225.2
C 14 254 65484 286.51 959 963 225.2
D 7 80 2896549 12630.75 959 931 229.3
D 8 195 655932 2857.13 959 931 229.3
D 2 250 187298 812.94 959 931 229.3

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