ASTROSAT CZTI

Data Quality Report

Orbit 33770

Creation date: 2024-06-27T20:52:28.230957
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_33770cztM0_level2.evt modeM0/AS1A11_086T01_9000004820_33770cztM0_level2_quad_clean.evt
Size (bytes)729,213,12062,046,720
Size695.4 MB 59.2 MB
Events in quadrant A7,223,359366,194
Events in quadrant B4,251,558395,761
Events in quadrant C3,353,060400,267
Events in quadrant D6,907,971353,220

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250882
B0160271
C0134201
D0242321

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5178127624.642719%
B517857911.181924%
C51781021.969873%
D517886816.763229%

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 7210 5179 1051 1051 14.58% 20.29%
B 7210 5179 454 454 6.30% 8.77%
C 7210 5179 79 79 1.10% 1.53%
D 7210 5179 1040 1040 14.42% 20.08%

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 3462249 26957.32 646 635 128.4
A 15 237 1243629 9679.82 646 635 128.4
A 13 6 15802 118.11 646 635 128.4
B 5 172 1493113 12082.78 663 647 123.5
B 0 189 36774 292.48 663 647 123.5
B 4 251 28034 221.72 663 647 123.5
C 15 214 225201 1444.95 685 693 155.4
C 9 187 204154 1309.49 685 693 155.4
C 0 10 136324 872.93 685 693 155.4
D 7 223 2260593 14110.95 661 643 160.2
D 8 195 943831 5889.19 661 643 160.2
D 2 250 501957 3130.16 661 643 160.2

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