ASTROSAT CZTI

Data Quality Report

Orbit 23794

Creation date: 2024-06-27T18:58:47.700248
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/AS1A07_113T01_9000003526_23794cztM0_level2.evt modeM0/AS1A07_113T01_9000003526_23794cztM0_level2_quad_clean.evt
Size (bytes)601,928,64064,419,840
Size574.0 MB 61.4 MB
Events in quadrant A3,238,311387,047
Events in quadrant B3,383,899390,054
Events in quadrant C3,305,037381,798
Events in quadrant D7,887,205362,945

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135651
B0139541
C0136861
D0277911

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6148450.731945%
B6149891.447390%
C61491061.723858%
D614992014.961782%

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 7368 6148 0 0 0.00% 0.00%
B 7369 6149 17 17 0.23% 0.28%
C 7369 6149 0 0 0.00% 0.00%
D 7369 6149 664 664 9.01% 10.80%

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 10321 56.37 839 825 168.5
A 0 226 7296 38.41 839 825 168.5
A 3 137 6829 35.64 839 825 168.5
B 3 64 91116 582.79 830 811 155.0
B 12 111 17665 108.77 830 811 155.0
B 0 189 17108 105.17 830 811 155.0
C 14 238 133173 706.65 812 820 187.3
C 7 247 5951 27.4 812 820 187.3
C 13 61 5730 26.22 812 820 187.3
D 8 195 3092940 16125.19 793 772 191.8
D 13 174 1388997 7239.38 793 772 191.8
D 1 52 252508 1312.77 793 772 191.8

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