ASTROSAT CZTI

Data Quality Report

Orbit 19688

Creation date: 2024-06-27T18:06:15.998608
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_101T05_9000002938_19688cztM0_level2.evt modeM0/AS1A05_101T05_9000002938_19688cztM0_level2_quad_clean.evt
Size (bytes)479,491,200126,590,400
Size457.3 MB 120.7 MB
Events in quadrant A3,051,567865,531
Events in quadrant B3,136,251870,635
Events in quadrant C3,624,016834,929
Events in quadrant D4,261,660803,281

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134521
B0136371
C0147351
D0171691

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65961001.516070%
B6596721.091571%
C65962023.062462%
D65964997.565191%

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 7291 6597 0 0 0.00% 0.00%
B 7291 6597 1 1 0.01% 0.02%
C 7291 6597 47 47 0.64% 0.71%
D 7291 6596 404 404 5.54% 6.12%

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 11 29 12506 74.19 788 772 158.2
A 0 226 7032 39.58 788 772 158.2
A 3 137 6091 33.63 788 772 158.2
B 0 197 20652 135.83 779 759 146.5
B 12 111 17542 114.59 779 759 146.5
B 0 230 17180 112.12 779 759 146.5
C 3 233 511114 2902.87 757 760 175.8
C 14 238 118595 670.24 757 760 175.8
C 8 208 33922 188.62 757 760 175.8
D 7 238 1251385 6926.39 748 727 180.6
D 1 52 109659 603.29 748 727 180.6
D 12 218 39385 214.1 748 727 180.6

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