ASTROSAT CZTI

Data Quality Report

Orbit 20160803_G05_167T02_9000000574_level2

Creation date: 2016-09-06T17:47:56.422210
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/AS1G05_167T02_9000000574cztM0_level2_bc.evt modeM0/AS1G05_167T02_9000000574cztM0_level2_quad_clean.evt
Size (bytes)1,150,560,000302,613,120
Size1.1 GB 288.6 MB
Events in quadrant A6,454,5621,761,447
Events in quadrant B7,080,9021,797,288
Events in quadrant C11,003,9141,776,057
Events in quadrant D8,151,5251,661,243

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0656830
B0669100
C0785900
D0728810

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06400
B06400
C06400
D06400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0750
B0750
C0750
D0750

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A315692030.643036%
B315692530.801419%
C315691630.516329%
D315696301.995629%

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 38929 31570 0 0 0.00% 0.00%
B 38929 31570 10 10 0.03% 0.03%
C 38929 31569 2 2 0.01% 0.01%
D 38929 31569 40 40 0.10% 0.13%

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 15 174 126225 354.94 1593 1558 351.2
A 10 253 71577 199.35 1593 1558 351.2
A 0 50 65074 180.84 1593 1558 351.2
B 14 167 185197 597.52 1625 1580 307.3
B 15 204 165967 534.94 1625 1580 307.3
B 4 48 148432 477.88 1625 1580 307.3
C 14 48 4725655 13204.49 1580 1550 357.8
C 9 247 52062 141.19 1580 1550 357.8
C 12 4 20741 53.64 1580 1550 357.8
D 13 235 1241417 3416.54 1558 1497 362.9
D 2 136 338657 929.03 1558 1497 362.9
D 2 14 107291 291.51 1558 1497 362.9

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