ASTROSAT CZTI

Data Quality Report

Orbit 20170625_G07_030T01_9000001338_level2

Creation date: 2017-09-24T07:38:59.199573
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_030T01_9000001338cztM0_level2.evt modeM0/AS1G07_030T01_9000001338cztM0_level2_quad_clean.evt
Size (bytes)2,559,654,720313,277,760
Size2.4 GB 298.8 MB
Events in quadrant A16,822,7842,019,696
Events in quadrant B13,200,8402,077,025
Events in quadrant C32,329,0901,573,099
Events in quadrant D13,350,7381,964,088

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0677570
B0566020
C01142610
D0574490

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0650
B0630
C0640
D0630

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05480
B05480
C05460
D05480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A267945422.022841%
B270393951.460853%
C26875818030.437209%
D269853461.282194%

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 34771 27832 52 52 0.15% 0.19%
B 34771 27943 1 1 0.00% 0.00%
C 34771 27853 5638 5638 16.21% 20.24%
D 34771 27891 31 31 0.09% 0.11%

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 3511118 5245.45 3337 3274 668.7
A 4 2 261707 386.45 3337 3274 668.7
A 1 162 96099 138.8 3337 3274 668.7
B 12 111 71962 107.87 3386 3312 636.4
B 11 111 58234 86.3 3386 3312 636.4
B 14 111 44115 64.11 3386 3312 636.4
C 4 254 21735783 35532.26 2672 2685 611.6
C 9 68 77313 122.01 2672 2685 611.6
C 14 234 52362 81.22 2672 2685 611.6
D 8 195 360516 434.02 3268 3190 823.3
D 1 52 301145 361.9 3268 3190 823.3
D 2 234 106920 125.99 3268 3190 823.3

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