ASTROSAT CZTI

Data Quality Report

Orbit 35524

Creation date: 2022-04-24T09:09:11.170449
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_097T09_9000005086_35524cztM0_level2.evt modeM0/AS1A11_097T09_9000005086_35524cztM0_level2_quad_clean.evt
Size (bytes)387,869,76052,983,360
Size369.9 MB 50.5 MB
Events in quadrant A2,415,176326,336
Events in quadrant B2,551,606329,376
Events in quadrant C3,020,319316,649
Events in quadrant D3,433,531294,937

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100463
B0103992
C0118012
D0132862

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A478660.125366%
B4786931.943168%
C47861322.758044%
D47862645.516089%

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 6938 4787 0 0 0.00% 0.00%
B 6938 4787 52 52 0.75% 1.09%
C 6938 4787 104 104 1.50% 2.17%
D 6938 4787 206 206 2.97% 4.30%

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 127427 1082.88 577 565 117.2
A 15 169 47119 397.38 577 565 117.2
A 13 254 7134 56.07 577 565 117.2
B 5 236 238024 2154.26 571 557 110.2
B 5 172 55760 500.79 571 557 110.2
B 0 189 14514 126.62 571 557 110.2
C 0 10 326392 2533.93 553 559 128.6
C 0 207 210450 1632.27 553 559 128.6
C 15 214 200349 1553.72 553 559 128.6
D 2 250 627400 4715.78 540 525 132.9
D 13 249 446298 3353.41 540 525 132.9
D 8 195 100837 754.61 540 525 132.9

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