ASTROSAT CZTI

Data Quality Report

Orbit 20181031_A05_059T03_9000002474_level2

Creation date: 2018-11-01T12:12:24.771861
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/AS1A05_059T03_9000002474cztM0_level2_bc.evt modeM0/AS1A05_059T03_9000002474cztM0_level2_quad_clean.evt
Size (bytes)353,373,120158,906,880
Size337.0 MB 151.5 MB
Events in quadrant A2,389,9171,096,022
Events in quadrant B2,224,2031,125,700
Events in quadrant C2,015,9301,067,371
Events in quadrant D3,563,5621,011,551

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0188400
B0175190
C0170480
D0220140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73582994.063604%
B73581141.549334%
C73581321.793966%
D73585287.175863%

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 8713 7357 6 6 0.07% 0.08%
B 8713 7358 2 2 0.02% 0.03%
C 8714 7359 6 6 0.07% 0.08%
D 8713 7358 40 40 0.46% 0.54%

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 15 174 666407 6877.97 443 438 96.8
A 9 143 11755 116.87 443 438 96.8
A 13 248 4578 42.75 443 438 96.8
B 0 229 102739 1196.98 453 445 85.5
B 15 35 102207 1190.76 453 445 85.5
B 0 189 50847 589.77 453 445 85.5
C 3 233 191830 1917.58 425 426 99.8
C 0 207 142770 1426.08 425 426 99.8
C 7 247 47192 468.53 425 426 99.8
D 1 52 973158 9841.93 424 412 98.8
D 5 222 540595 5465.4 424 412 98.8
D 2 16 124873 1259.26 424 412 98.8

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