ASTROSAT CZTI

Data Quality Report

Orbit 20170616_G07_077T02_9000001308_level2

Creation date: 2017-09-24T05:31:48.778200
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/AS1G07_077T02_9000001308cztM0_level2.evt modeM0/AS1G07_077T02_9000001308cztM0_level2_quad_clean.evt
Size (bytes)1,821,504,960340,056,000
Size1.7 GB 324.3 MB
Events in quadrant A16,326,9612,138,985
Events in quadrant B12,033,0332,190,380
Events in quadrant C11,063,0962,190,184
Events in quadrant D14,082,1202,089,907

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0650320
B0525280
C0502790
D0587420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05020
B05020
C05020
D05020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A245149553.895733%
B245772981.212516%
C246211850.751391%
D245665912.405764%

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 34479 24827 344 344 1.00% 1.39%
B 34479 24839 20 20 0.06% 0.08%
C 34479 24842 0 0 0.00% 0.00%
D 34479 24835 263 263 0.76% 1.06%

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 8 5 3790269 6666.99 2819 2755 568.1
A 15 223 776408 1361.83 2819 2755 568.1
A 15 239 434730 760.39 2819 2755 568.1
B 0 214 259359 474.23 2877 2806 541.0
B 8 234 204201 372.27 2877 2806 541.0
B 0 219 122629 221.49 2877 2806 541.0
C 14 67 32110 44.9 2820 2830 652.0
C 13 61 21442 28.54 2820 2830 652.0
C 12 4 15266 19.07 2820 2830 652.0
D 1 52 1953142 2825.5 2772 2703 690.3
D 12 233 741762 1070.64 2772 2703 690.3
D 7 71 370554 532.89 2772 2703 690.3

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