ASTROSAT CZTI

Data Quality Report

Orbit 20245

Creation date: 2024-06-27T18:12:56.992546
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/AS1T03_123T01_9000003000_20245cztM0_level2.evt modeM0/AS1T03_123T01_9000003000_20245cztM0_level2_quad_clean.evt
Size (bytes)444,859,20092,407,680
Size424.3 MB 88.1 MB
Events in quadrant A3,126,144593,789
Events in quadrant B3,183,731603,611
Events in quadrant C3,232,191571,654
Events in quadrant D3,480,367567,772

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136142
B0136972
C0138292
D0148972

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6622390.588946%
B6622520.785261%
C6622741.117487%
D6622460.694654%

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 7637 6623 1 1 0.01% 0.02%
B 7637 6623 0 0 0.00% 0.00%
C 7637 6623 0 0 0.00% 0.00%
D 7637 6623 18 18 0.24% 0.27%

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 0 226 6799 36.65 812 798 163.7
A 3 137 6769 36.47 812 798 163.7
A 12 194 5671 29.76 812 798 163.7
B 12 111 19058 116.92 810 791 156.2
B 11 111 17231 105.23 810 791 156.2
B 14 111 15927 96.88 810 791 156.2
C 14 238 122462 664.65 781 786 183.1
C 9 54 25865 136.99 781 786 183.1
C 3 233 21634 113.88 781 786 183.1
D 1 52 462086 2438.42 788 766 189.2
D 2 234 28084 144.4 788 766 189.2
D 2 184 21072 107.33 788 766 189.2

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