ASTROSAT CZTI

Data Quality Report

Orbit 20160129_G02_021T08_9000000302_level2

Creation date: 2017-11-02T10:32:02.289669
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/AS1G02_021T08_9000000302cztM0_level2.evt modeM0/AS1G02_021T08_9000000302cztM0_level2_quad_clean.evt
Size (bytes)8,672,791,680615,597,120
Size8.1 GB 587.1 MB
Events in quadrant A63,442,2873,770,420
Events in quadrant B74,948,5263,806,818
Events in quadrant C61,283,8043,773,140
Events in quadrant D59,516,0333,679,709

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010580
B010580
C010570
D010580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02259050
B02599830
C02195340
D02145400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A12733597094080
B12733597094080
C12733597094080
D12733597094080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A526943440.652826%
B5269012192.313532%
C526923020.573142%
D526926681.267745%

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 59451 52709 2250 2250 3.78% 4.27%
B 59451 52707 6941 6941 11.68% 13.17%
C 59451 52707 1901 1901 3.20% 3.61%
D 59451 52706 2300 2300 3.87% 4.36%

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 15 236 63805 11.77 16571 16680 4003.5
A 10 2 56496 9.95 16571 16680 4003.5
A -1 -1 -1 -1.0 16571 16680 4003.5
B 8 3 8681621 2151.86 17168 17248 4026.5
B 0 187 930887 226.91 17168 17248 4026.5
B 0 234 136914 29.72 17168 17248 4026.5
C 15 246 142658 28.87 15645 16194 4380.5
C 9 236 62992 10.68 15645 16194 4380.5
C 12 4 47479 7.14 15645 16194 4380.5
D 7 85 719107 149.12 15158 15734 4716.9
D 13 105 702265 145.55 15158 15734 4716.9
D 13 53 541671 111.5 15158 15734 4716.9

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