ASTROSAT CZTI

Data Quality Report

Orbit 20180120_A04_230T01_9000001854_level2

Creation date: 2018-06-30T14:31:16.277513
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/AS1A04_230T01_9000001854cztM0_level2_bc.evt modeM0/AS1A04_230T01_9000001854cztM0_level2_quad_clean.evt
Size (bytes)2,866,999,6801,067,212,800
Size2.7 GB 1017.8 MB
Events in quadrant A17,754,1226,823,704
Events in quadrant B18,981,6406,940,745
Events in quadrant C16,071,7426,824,105
Events in quadrant D28,637,3686,321,611

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01230
B01230
C01230
D01230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016060
B016060
C016060
D016060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01725600
B01742250
C01636800
D02071580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7898610631.345808%
B7898615822.002887%
C789866670.844453%
D7898642055.323728%

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 91003 78989 0 0 0.00% 0.00%
B 91003 78985 14 14 0.02% 0.02%
C 91003 78986 2 2 0.00% 0.00%
D 91003 78986 1185 1185 1.30% 1.50%

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 674440 751.49 4108 4031 892.1
A 12 189 557059 619.91 4108 4031 892.1
A 8 15 343758 380.81 4108 4031 892.1
B 4 239 1957637 2499.61 4151 4044 781.6
B 0 214 283391 357.42 4151 4044 781.6
B 3 64 191419 239.75 4151 4044 781.6
C 15 208 101596 110.14 4044 3998 886.1
C 3 233 101282 109.79 4044 3998 886.1
C 13 61 24026 22.6 4044 3998 886.1
D 1 52 9297638 10146.88 3932 3798 915.9
D 7 80 994890 1082.06 3932 3798 915.9
D 8 195 821059 892.27 3932 3798 915.9

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