ASTROSAT CZTI

Data Quality Report

Orbit 20190519_A05_212T08_9000002934_level2

Creation date: 2025-11-30T08:07:33.809599
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/AS1A05_212T08_9000002934cztM0_level2.fits modeM0/AS1A05_212T08_9000002934cztM0_level2_quad_clean.evt
Size (bytes)87,891,84093,283,200
Size83.8 MB 89.0 MB
Events in quadrant A532,456575,096
Events in quadrant B501,980567,223
Events in quadrant C522,002535,408
Events in quadrant D458,768500,273

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0194540
B0230650
C0194270
D0214960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01920
B01920
C01920
D01920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A93161241.331043%
B93164604.937742%
C93161661.781881%
D93161962.103907%

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 10756 9314 0 0 0.00% 0.00%
B 10756 9311 0 0 0.00% 0.00%
C 10756 9314 0 0 0.00% 0.00%
D 10756 9314 0 0 0.00% 0.00%

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 29 507 10.21 138 129 37.0
A 7 110 434 8.24 138 129 37.0
A 9 19 420 7.86 138 129 37.0
B 2 9 435 11.01 132 126 28.1
B 2 8 362 8.41 132 126 28.1
B 5 252 338 7.56 132 126 28.1
C 3 235 380 6.87 137 128 36.7
C 12 241 378 6.82 137 128 36.7
C 1 80 373 6.68 137 128 36.7
D 15 46 338 6.05 130 119 36.2
D 7 3 338 6.05 130 119 36.2
D 3 14 335 5.97 130 119 36.2

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