ASTROSAT CZTI

Data Quality Report

Orbit 15097

Creation date: 2024-06-27T17:03:42.065815
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/AS1G08_028T01_9000002220_15097cztM0_level2.evt modeM0/AS1G08_028T01_9000002220_15097cztM0_level2_quad_clean.evt
Size (bytes)436,884,48091,624,320
Size416.6 MB 87.4 MB
Events in quadrant A3,134,574595,153
Events in quadrant B3,320,154612,100
Events in quadrant C3,396,201580,298
Events in quadrant D2,958,399553,909

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129913
B0135762
C0139202
D0129642

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6200230.370968%
B6200410.661290%
C6200180.290323%
D6200160.258065%

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 7576 6202 0 0 0.00% 0.00%
B 7576 6202 1 1 0.01% 0.02%
C 7576 6202 0 0 0.00% 0.00%
D 7576 6202 6 6 0.08% 0.10%

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 12 189 62227 384.14 800 788 159.9
A 0 226 7136 39.69 800 788 159.9
A 12 194 5764 31.11 800 788 159.9
B 3 64 153252 1007.97 800 784 151.3
B 10 245 39556 256.32 800 784 151.3
B 12 111 17936 113.39 800 784 151.3
C 3 233 329588 1861.6 768 775 176.6
C 3 9 68039 380.82 768 775 176.6
C 13 61 5489 26.69 768 775 176.6
D 13 104 61850 332.23 763 744 183.9
D 2 234 19508 102.02 763 744 183.9
D 9 1 8257 40.85 763 744 183.9

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