ASTROSAT CZTI

Data Quality Report

Orbit 33254

Creation date: 2024-06-27T20:46:42.131871
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/AS1A11_047T10_9000004778_33254cztM0_level2.evt modeM0/AS1A11_047T10_9000004778_33254cztM0_level2_quad_clean.evt
Size (bytes)697,691,52086,152,320
Size665.4 MB 82.2 MB
Events in quadrant A8,710,705500,668
Events in quadrant B3,665,233576,813
Events in quadrant C2,942,388577,372
Events in quadrant D5,421,428549,644

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0299313
B0147292
C0125652
D0199772

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5771225439.057356%
B57712093.621556%
C5771921.594178%
D57713516.082135%

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 7144 5772 1226 1226 17.16% 21.24%
B 7144 5772 124 124 1.74% 2.15%
C 7144 5772 74 74 1.04% 1.28%
D 7144 5772 297 297 4.16% 5.15%

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 15 169 6462098 55463.53 577 566 116.5
A 13 6 11718 95.72 577 566 116.5
A 13 254 8928 71.78 577 566 116.5
B 5 172 575008 4567.33 656 638 125.8
B 0 219 288294 2287.41 656 638 125.8
B 5 173 43811 343.31 656 638 125.8
C 0 10 242910 1622.45 644 649 149.3
C 10 49 115140 766.76 644 649 149.3
C 0 207 17633 113.74 644 649 149.3
D 8 195 1582821 9608.2 636 619 164.7
D 12 218 314394 1905.45 636 619 164.7
D 2 250 273134 1654.89 636 619 164.7

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