ASTROSAT CZTI

Data Quality Report

Orbit 32657

Creation date: 2024-06-27T20:40:32.681099
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/AS1A10_057T03_9000004722_32657cztM0_level2.evt modeM0/AS1A10_057T03_9000004722_32657cztM0_level2_quad_clean.evt
Size (bytes)731,361,60059,760,000
Size697.5 MB 57.0 MB
Events in quadrant A3,153,177395,278
Events in quadrant B5,404,556402,831
Events in quadrant C4,760,125389,352
Events in quadrant D8,502,498278,114

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121603
B0195582
C0175822
D0287352

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A48842424.954955%
B488457011.670762%
C488452710.790336%
D4885215944.196520%

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 7037 4885 227 227 3.23% 4.65%
B 7037 4885 475 475 6.75% 9.72%
C 7037 4885 387 387 5.50% 7.92%
D 7038 4886 2169 2169 30.82% 44.39%

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 15 249 627335 5271.32 599 589 118.9
A 1 39 116974 978.87 599 589 118.9
A 9 191 45070 374.11 599 589 118.9
B 3 43 1656671 14793.73 597 587 111.9
B 3 220 328128 2925.91 597 587 111.9
B 0 219 195511 1741.25 597 587 111.9
C 8 35 921670 6959.03 564 567 132.4
C 8 147 498831 3764.44 564 567 132.4
C 0 10 430482 3248.05 564 567 132.4
D 7 80 2209440 19573.28 479 468 112.9
D 12 222 1930990 17105.98 479 468 112.9
D 2 250 589488 5219.19 479 468 112.9

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