ASTROSAT CZTI

Data Quality Report

Orbit 20181029_A05_012T02_9000002468_level2

Creation date: 2018-10-30T10:19:26.854712
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_012T02_9000002468cztM0_level2_bc.evt modeM0/AS1A05_012T02_9000002468cztM0_level2_quad_clean.evt
Size (bytes)2,501,395,200571,150,080
Size2.3 GB 544.7 MB
Events in quadrant A17,198,3663,576,566
Events in quadrant B11,110,9393,721,832
Events in quadrant C8,960,0293,619,161
Events in quadrant D35,493,8693,360,776

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01253260
B0976090
C0915180
D01881710

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0830
B0830
C0830
D0830

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08920
B08920
C08920
D08920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4399737338.484669%
B439975691.293270%
C439975441.236448%
D43997708716.107916%

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 52133 43994 320 320 0.61% 0.73%
B 52133 43999 1 1 0.00% 0.00%
C 52133 43998 0 0 0.00% 0.00%
D 52133 43995 631 631 1.21% 1.43%

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 7584792 15318.74 2296 2262 495.0
A 12 96 432813 869.83 2296 2262 495.0
A 9 143 316269 634.38 2296 2262 495.0
B 0 229 738207 1657.76 2368 2314 443.9
B 15 35 705152 1583.3 2368 2314 443.9
B 0 189 236991 528.66 2368 2314 443.9
C 3 233 132331 245.9 2276 2260 529.0
C 7 247 59528 108.27 2276 2260 529.0
C 13 61 13494 21.24 2276 2260 529.0
D 1 52 15028237 29265.47 2196 2119 513.4
D 2 16 9471160 18442.29 2196 2119 513.4
D 5 222 880520 1710.81 2196 2119 513.4

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