ASTROSAT CZTI

Data Quality Report

Orbit 22937

Creation date: 2024-06-27T18:47:47.437917
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/AS1A08_009T01_9000003390_22937cztM0_level2.evt modeM0/AS1A08_009T01_9000003390_22937cztM0_level2_quad_clean.evt
Size (bytes)508,682,88094,348,800
Size485.1 MB 90.0 MB
Events in quadrant A3,135,669606,957
Events in quadrant B3,247,767615,362
Events in quadrant C3,239,692594,401
Events in quadrant D5,326,968572,603

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137851
B0140991
C0139861
D0205091

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6712300.446961%
B6712430.640644%
C6712801.191895%
D67124106.108462%

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 7712 6713 0 0 0.00% 0.00%
B 7712 6713 1 1 0.01% 0.01%
C 7712 6713 0 0 0.00% 0.00%
D 7712 6713 239 239 3.10% 3.56%

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 13 254 10952 62.18 811 793 163.4
A 3 137 7047 38.28 811 793 163.4
A 13 170 6938 37.61 811 793 163.4
B 12 111 18576 114.96 813 791 154.7
B 0 197 16894 104.09 813 791 154.7
B 11 111 16394 100.86 813 791 154.7
C 14 238 123371 662.53 789 794 185.0
C 0 239 21020 109.32 789 794 185.0
C 7 247 13100 66.51 789 794 185.0
D 1 52 1475743 7731.79 782 760 190.8
D 7 238 432237 2261.78 782 760 190.8
D 13 153 176143 919.35 782 760 190.8

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