ASTROSAT CZTI

Data Quality Report

Orbit 37816

Creation date: 2024-06-27T21:44:51.228928
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/AS1T05_054T01_9000005350_37816cztM0_level2.evt modeM0/AS1T05_054T01_9000005350_37816cztM0_level2_quad_clean.evt
Size (bytes)449,902,08071,588,160
Size429.1 MB 68.3 MB
Events in quadrant A3,094,749441,818
Events in quadrant B3,503,106445,083
Events in quadrant C2,997,302445,138
Events in quadrant D3,623,529417,394

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128573
B0144332
C0125912
D0148372

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5985150.250627%
B59851242.071846%
C5985120.200501%
D59851712.857143%

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 7268 5986 13 13 0.18% 0.22%
B 7268 5986 88 88 1.21% 1.47%
C 7268 5986 12 12 0.17% 0.20%
D 7268 5986 167 167 2.30% 2.79%

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 10 83 374011 2756.25 670 660 135.5
A 9 143 71044 519.61 670 660 135.5
A 13 6 21201 151.64 670 660 135.5
B 4 171 315475 2466.61 666 648 127.6
B 4 232 148750 1160.35 666 648 127.6
B 5 172 121211 944.59 666 648 127.6
C 15 214 271785 1777.86 652 659 152.5
C 0 10 114058 743.59 652 659 152.5
C 15 159 39221 252.86 652 659 152.5
D 2 249 567059 3564.3 647 629 158.9
D 10 199 130950 820.05 647 629 158.9
D 7 223 103958 650.21 647 629 158.9

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