ASTROSAT CZTI

Data Quality Report

Orbit 20200917_A09_038T10_9000003876_level2

Creation date: 2021-01-08T07:19:23.441163
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A09_038T10_9000003876cztM0_level2_bc.evt modeM0/AS1A09_038T10_9000003876cztM0_level2_quad_clean.evt
Size (bytes)316,972,800120,430,080
Size302.3 MB 114.9 MB
Events in quadrant A2,617,919792,399
Events in quadrant B2,087,130811,154
Events in quadrant C1,387,338786,002
Events in quadrant D3,007,624754,568

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185270
B0167900
C0147380
D0201240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72401211.671271%
B72401161.602210%
C7240690.953039%
D72403274.516575%

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 7875 7241 7 7 0.09% 0.10%
B 7875 7239 18 18 0.23% 0.25%
C 7875 7240 0 0 0.00% 0.00%
D 7875 7240 50 50 0.63% 0.69%

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 0 13 812101 9828.69 366 358 82.6
A 6 16 389989 4717.7 366 358 82.6
A 13 254 10137 118.41 366 358 82.6
B 3 64 534448 7183.6 372 362 74.3
B 10 246 72331 968.0 372 362 74.3
B 0 190 28928 384.22 372 362 74.3
C 15 208 2560 25.2 360 358 87.4
C 13 61 2099 19.92 360 358 87.4
C 7 247 1441 12.39 360 358 87.4
D 7 80 591956 7011.26 356 345 84.4
D 1 52 591881 7010.37 356 345 84.4
D 2 250 266283 3151.66 356 345 84.4

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