ASTROSAT CZTI

Data Quality Report

Orbit 17120

Creation date: 2024-06-27T17:32:23.525439
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_056T01_9000002540_17120cztM0_level2.evt modeM0/AS1A05_056T01_9000002540_17120cztM0_level2_quad_clean.evt
Size (bytes)440,887,68098,645,760
Size420.5 MB 94.1 MB
Events in quadrant A3,303,169646,237
Events in quadrant B3,259,472661,292
Events in quadrant C3,360,332612,858
Events in quadrant D2,982,643608,931

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141202
B0139732
C0141703
D0135372

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6568550.837393%
B6569691.050388%
C6568540.822168%
D656890.137028%

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 7693 6569 21 21 0.27% 0.32%
B 7694 6570 14 14 0.18% 0.21%
C 7693 6569 1 1 0.01% 0.02%
D 7693 6569 1 1 0.01% 0.02%

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 4 2 208153 1259.95 804 788 164.6
A 0 226 7003 37.76 804 788 164.6
A 3 137 5946 31.34 804 788 164.6
B 0 229 95252 607.56 808 790 155.5
B 12 111 18749 115.51 808 790 155.5
B 11 111 16055 98.18 808 790 155.5
C 3 233 253864 1422.23 762 768 178.0
C 14 238 117881 658.1 762 768 178.0
C 9 160 8254 42.07 762 768 178.0
D 15 0 27199 141.35 770 751 187.1
D 2 234 24848 128.78 770 751 187.1
D 5 222 21384 110.27 770 751 187.1

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