ASTROSAT CZTI

Data Quality Report

Orbit 04632

Creation date: 2024-06-27T14:44:48.916670
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/AS1G05_190T01_9000000578_04632cztM0_level2.evt modeM0/AS1G05_190T01_9000000578_04632cztM0_level2_quad_clean.evt
Size (bytes)855,126,72086,037,120
Size815.5 MB 82.1 MB
Events in quadrant A4,272,966535,946
Events in quadrant B4,315,537548,469
Events in quadrant C3,960,819545,201
Events in quadrant D12,773,899384,721

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183713
B0181252
C0173872
D0435912

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8493720.847757%
B8493400.470976%
C8493120.141293%
D8493338539.856352%

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 11208 8495 18 18 0.16% 0.21%
B 11208 8495 3 3 0.03% 0.04%
C 11208 8495 1 1 0.01% 0.01%
D 11208 8495 3117 3117 27.81% 36.69%

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 0 118 80619 381.22 1030 1011 208.8
A 15 174 78354 370.37 1030 1011 208.8
A 12 133 65210 307.43 1030 1011 208.8
B 14 167 92202 452.45 1055 1031 201.5
B 12 18 32620 156.76 1055 1031 201.5
B 15 204 25990 123.86 1055 1031 201.5
C 9 54 10596 40.91 1009 1014 234.2
C 13 61 8411 31.58 1009 1014 234.2
C 9 247 4851 16.38 1009 1014 234.2
D 8 112 6745659 34698.01 797 770 194.4
D 13 235 1786209 9184.91 797 770 194.4
D 2 63 771248 3963.6 797 770 194.4

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