ASTROSAT CZTI

Data Quality Report

Orbit 20171203_A04_022T04_9000001746_level2

Creation date: 2018-01-09T09:16:53.830776
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/AS1A04_022T04_9000001746cztM0_level2_bc.evt modeM0/AS1A04_022T04_9000001746cztM0_level2_quad_clean.evt
Size (bytes)2,988,648,000959,734,080
Size2.8 GB 915.3 MB
Events in quadrant A15,588,4366,052,387
Events in quadrant B31,759,1745,856,464
Events in quadrant C15,126,2076,138,805
Events in quadrant D22,834,4615,784,019

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01616690
B02181260
C01565530
D01830120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015520
B015520
C015520
D015520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7636312151.591085%
B7636357387.514110%
C763636050.792269%
D7636323753.110145%

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 87884 76370 3 3 0.00% 0.00%
B 87884 76359 611 611 0.70% 0.80%
C 87884 76367 2 2 0.00% 0.00%
D 87884 76365 184 184 0.21% 0.24%

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 1 162 545197 649.83 3804 3727 833.2
A 13 251 125616 146.28 3804 3727 833.2
A 13 254 95641 110.31 3804 3727 833.2
B 10 16 7253869 10228.92 3749 3649 708.8
B 4 239 5453554 7688.96 3749 3649 708.8
B 3 64 1591522 2240.24 3749 3649 708.8
C 8 208 86456 95.43 3809 3739 866.8
C 1 16 43384 45.74 3809 3739 866.8
C 14 234 26237 25.96 3809 3739 866.8
D 1 52 3535697 3930.52 3766 3605 898.6
D 8 195 901228 998.88 3766 3605 898.6
D 10 199 709681 785.72 3766 3605 898.6

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