ASTROSAT CZTI

Data Quality Report

Orbit 20170418_A02_158T01_9000001184_level2

Creation date: 2017-09-23T18:45:48.545798
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/AS1A02_158T01_9000001184cztM0_level2.evt modeM0/AS1A02_158T01_9000001184cztM0_level2_quad_clean.evt
Size (bytes)2,213,910,720403,151,040
Size2.1 GB 384.5 MB
Events in quadrant A15,409,6692,501,464
Events in quadrant B16,205,2972,546,943
Events in quadrant C15,140,2212,511,445
Events in quadrant D18,064,6822,384,708

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0683800
B0701640
C0678570
D0768230

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06720
B06720
C06720
D06720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A329804761.443299%
B329755011.519333%
C329792420.733800%
D329756982.116755%

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 35858 33011 12 12 0.03% 0.04%
B 35858 33012 15 15 0.04% 0.05%
C 35858 33014 14 14 0.04% 0.04%
D 35858 33012 365 365 1.02% 1.11%

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 5 16 155276 190.16 3913 3828 796.4
A 14 111 74332 88.52 3913 3828 796.4
A 13 251 59796 70.27 3913 3828 796.4
B 0 214 404641 535.69 3932 3831 748.2
B 4 81 171490 224.08 3932 3831 748.2
B 5 255 140294 182.38 3932 3831 748.2
C 1 16 169593 186.48 3827 3844 888.8
C 13 61 29256 28.59 3827 3844 888.8
C 8 128 28154 27.35 3827 3844 888.8
D 12 221 878386 939.16 3793 3675 931.4
D 4 95 787259 841.32 3793 3675 931.4
D 12 227 742309 793.06 3793 3675 931.4

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