ASTROSAT CZTI

Data Quality Report

Orbit 08142

Creation date: 2024-06-27T15:28:35.699703
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/AS1A03_051T01_9000001120_08142cztM0_level2.evt modeM0/AS1A03_051T01_9000001120_08142cztM0_level2_quad_clean.evt
Size (bytes)819,725,760157,279,680
Size781.8 MB 150.0 MB
Events in quadrant A5,702,149979,182
Events in quadrant B5,998,473997,509
Events in quadrant C5,724,644971,272
Events in quadrant D6,535,296933,714

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02622
B02620
C02622
D02624

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026167325
B026540279
C026228300
D028815445

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A127431160.910304%
B127691651.292192%
C127541291.011447%
D127391771.389434%

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 14010 12869 0 0 0.00% 0.00%
B 14010 12884 12 12 0.09% 0.09%
C 14010 12875 0 0 0.00% 0.00%
D 14010 12862 66 66 0.47% 0.51%

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 0 226 13700 40.36 1480 1446 303.6
A 12 194 13197 38.7 1480 1446 303.6
A 13 251 9659 27.05 1480 1446 303.6
B 4 173 81272 281.22 1493 1457 283.8
B 0 214 57250 196.58 1493 1457 283.8
B 10 16 38083 129.05 1493 1457 283.8
C 1 16 55044 159.01 1451 1455 337.0
C 13 61 10898 28.02 1451 1455 337.0
C 8 128 6491 14.94 1451 1455 337.0
D 1 52 589306 1680.63 1429 1391 349.8
D 12 233 219476 623.42 1429 1391 349.8
D 12 227 181953 516.16 1429 1391 349.8

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