ASTROSAT CZTI

Data Quality Report

Orbit 03981

Creation date: 2024-06-27T14:35:56.969234
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_247T01_9000000512_03981cztM0_level2.evt modeM0/AS1G05_247T01_9000000512_03981cztM0_level2_quad_clean.evt
Size (bytes)475,312,320111,288,960
Size453.3 MB 106.1 MB
Events in quadrant A4,121,539719,836
Events in quadrant B3,725,929743,621
Events in quadrant C2,962,159737,592
Events in quadrant D3,136,923709,180

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167493
B0154102
C0133722
D0141372

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65974867.366985%
B65971231.864484%
C6597170.257693%
D6597350.530544%

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 7887 6598 348 348 4.41% 5.27%
B 7887 6598 49 49 0.62% 0.74%
C 7887 6598 1 1 0.01% 0.02%
D 7887 6598 16 16 0.20% 0.24%

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 50 1188129 7983.49 742 727 148.7
A 0 118 33601 221.03 742 727 148.7
A 8 15 21927 142.54 742 727 148.7
B 14 167 332359 2290.79 773 755 144.8
B 4 81 211377 1455.02 773 755 144.8
B 7 252 61630 420.54 773 755 144.8
C 9 144 24562 138.79 751 755 171.5
C 13 61 6437 33.12 751 755 171.5
C 7 202 2920 12.62 751 755 171.5
D 12 233 114939 650.01 741 721 175.7
D 2 232 68314 384.67 741 721 175.7
D 9 82 39938 223.18 741 721 175.7

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