ASTROSAT CZTI

Data Quality Report

Orbit 33782

Creation date: 2024-06-27T20:52:35.785813
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_086T01_9000004820_33782cztM0_level2.evt modeM0/AS1A11_086T01_9000004820_33782cztM0_level2_quad_clean.evt
Size (bytes)859,429,44056,036,160
Size819.6 MB 53.4 MB
Events in quadrant A7,003,928333,852
Events in quadrant B3,680,984358,376
Events in quadrant C3,262,232354,242
Events in quadrant D11,707,047260,110

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0247433
B0143792
C0129022
D0386082

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A556370412.655042%
B55631993.577207%
C5563601.078555%
D5563341661.405716%

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 7296 5564 479 479 6.57% 8.61%
B 7296 5564 133 133 1.82% 2.39%
C 7296 5564 53 53 0.73% 0.95%
D 7296 5564 3688 3688 50.55% 66.28%

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 3366894 25590.73 657 646 131.5
A 15 237 1080196 8206.9 657 646 131.5
A 13 6 9698 68.81 657 646 131.5
B 5 172 711742 5536.53 674 658 128.4
B 0 190 63355 488.16 674 658 128.4
B 15 85 36839 281.7 674 658 128.4
C 3 233 274316 1794.26 663 669 152.5
C 15 214 243797 1594.15 663 669 152.5
C 0 10 86114 560.25 663 669 152.5
D 12 235 7795080 52326.84 549 537 149.0
D 8 195 991215 6650.68 549 537 149.0
D 2 250 309558 2074.54 549 537 149.0

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