ASTROSAT CZTI

Data Quality Report

Orbit 20170714_A03_084T01_9000001382_level2

Creation date: 2017-09-24T11:06:40.647775
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/AS1A03_084T01_9000001382cztM0_level2.evt modeM0/AS1A03_084T01_9000001382cztM0_level2_quad_clean.evt
Size (bytes)1,382,797,440253,575,360
Size1.3 GB 241.8 MB
Events in quadrant A10,008,8751,599,332
Events in quadrant B9,709,7711,623,788
Events in quadrant C10,274,3891,567,162
Events in quadrant D10,559,9091,539,988

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0417710
B0413260
C0441090
D0443080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04000
B04000
C04000
D04000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A196014852.474364%
B196014702.397837%
C196016843.489618%
D196004662.377551%

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 21041 19607 11 11 0.05% 0.06%
B 21041 19607 5 5 0.02% 0.03%
C 21041 19607 295 295 1.40% 1.50%
D 21041 19607 88 88 0.42% 0.45%

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 1 162 374279 768.09 2370 2318 484.3
A 1 178 139142 282.54 2370 2318 484.3
A 1 161 124948 253.23 2370 2318 484.3
B 0 214 126310 274.18 2373 2313 452.3
B 0 229 73401 157.19 2373 2313 452.3
B 0 187 69436 148.42 2373 2313 452.3
C 14 234 1282127 2407.35 2275 2280 531.6
C 10 22 70181 127.72 2275 2280 531.6
C 9 237 39600 70.2 2275 2280 531.6
D 1 52 1033490 1854.15 2282 2228 556.2
D 12 233 256239 456.7 2282 2228 556.2
D 8 195 207856 369.71 2282 2228 556.2

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