ASTROSAT CZTI

Data Quality Report

Orbit 20180220_T02_004T01_9000001910_level2

Creation date: 2018-07-09T09:27:16.534660
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/AS1T02_004T01_9000001910cztM0_level2_bc.evt modeM0/AS1T02_004T01_9000001910cztM0_level2_quad_clean.evt
Size (bytes)1,282,645,440440,130,240
Size1.2 GB 419.7 MB
Events in quadrant A7,823,0932,842,374
Events in quadrant B11,427,2332,798,521
Events in quadrant C6,399,5172,863,484
Events in quadrant D11,068,9872,686,898

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06380
B06380
C06380
D06380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0490
B0490
C0490
D0490

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0702920
B0879620
C0641250
D0788650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A311284581.471344%
B3112828689.213570%
C311281780.571832%
D3112812283.945001%

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 36235 31132 6 6 0.02% 0.02%
B 36235 31109 143 143 0.39% 0.46%
C 36235 31131 1 1 0.00% 0.00%
D 36235 31132 352 352 0.97% 1.13%

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 12 189 803716 2289.69 1590 1559 350.3
A 15 223 299909 851.62 1590 1559 350.3
A 1 162 207851 588.84 1590 1559 350.3
B 0 85 2611479 8884.56 1544 1505 293.8
B 4 239 1587312 5398.21 1544 1505 293.8
B 3 64 776031 2636.55 1544 1505 293.8
C 14 234 141157 395.06 1584 1564 353.3
C 0 207 51061 140.08 1584 1564 353.3
C 13 61 9360 22.06 1584 1564 353.3
D 1 52 4050148 11118.88 1554 1501 364.1
D 8 195 662014 1813.98 1554 1501 364.1
D 2 14 184396 502.29 1554 1501 364.1

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