ASTROSAT CZTI

Data Quality Report

Orbit 36641

Creation date: 2024-06-27T21:29:36.806863
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_049T04_9000005230_36641cztM0_level2.evt modeM0/AS1A11_049T04_9000005230_36641cztM0_level2_quad_clean.evt
Size (bytes)625,429,44083,632,320
Size596.5 MB 79.8 MB
Events in quadrant A2,853,341566,596
Events in quadrant B3,068,431561,785
Events in quadrant C3,286,361543,440
Events in quadrant D9,345,161458,827

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120493
B0126872
C0132212
D0317652

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A574070.121951%
B5740350.609756%
C57401582.752613%
D5740159727.822300%

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 7353 5741 0 0 0.00% 0.00%
B 7353 5741 23 23 0.31% 0.40%
C 7353 5741 119 119 1.62% 2.07%
D 7353 5741 1570 1570 21.35% 27.35%

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 10 83 221490 1625.14 674 661 135.9
A 13 254 9136 62.37 674 661 135.9
A 9 143 8766 59.65 674 661 135.9
B 0 190 237006 1839.69 663 646 128.5
B 5 255 114248 884.21 663 646 128.5
B 0 219 24004 181.81 663 646 128.5
C 0 10 408588 2757.95 636 640 147.9
C 15 214 242565 1635.55 636 640 147.9
C 14 254 74811 501.44 636 640 147.9
D 12 235 6191012 41520.1 603 587 149.1
D 2 250 181311 1212.14 603 587 149.1
D 12 17 144866 967.7 603 587 149.1

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