ASTROSAT CZTI

Data Quality Report

Orbit 20160101_G04_003T02_9000000236_level2

Creation date: 2016-09-06T17:55:57.741859
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/AS1G04_003T02_9000000236cztM0_level2_bc.evt modeM0/AS1G04_003T02_9000000236cztM0_level2_quad_clean.evt
Size (bytes)1,487,989,440565,476,480
Size1.4 GB 539.3 MB
Events in quadrant A17,667,4763,614,722
Events in quadrant B8,412,2553,701,287
Events in quadrant C8,298,5893,666,186
Events in quadrant D8,166,2683,607,887

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01887970
B01643590
C01544830
D01468440

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07520
B07520
C07520
D07520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0750
B0750
C0750
D0750

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3696312713.438574%
B369632330.630360%
C369631340.362525%
D369635361.450099%

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 44398 36958 478 478 1.08% 1.29%
B 44398 36961 16 16 0.04% 0.04%
C 44398 36961 11 11 0.02% 0.03%
D 44398 36958 31 31 0.07% 0.08%

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 15 127 6865559 20235.5 1603 1569 339.2
A 4 32 3950862 11642.78 1603 1569 339.2
A 12 243 311296 913.1 1603 1569 339.2
B 8 4 406609 1370.91 1656 1610 295.4
B 6 53 356580 1201.57 1656 1610 295.4
B 5 249 346599 1167.78 1656 1610 295.4
C 15 241 1487912 4360.65 1610 1581 340.9
C 3 79 144179 418.36 1610 1581 340.9
C 9 54 100047 288.88 1610 1581 340.9
D 9 53 661373 1889.31 1605 1555 349.2
D 9 66 375140 1069.72 1605 1555 349.2
D 12 22 260427 741.25 1605 1555 349.2

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