ASTROSAT CZTI

Data Quality Report

Orbit 20170807_A03_084T01_9000001440_level2

Creation date: 2017-09-24T14:30:32.347010
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_9000001440cztM0_level2.evt modeM0/AS1A03_084T01_9000001440cztM0_level2_quad_clean.evt
Size (bytes)2,105,288,640336,404,160
Size2.0 GB 320.8 MB
Events in quadrant A13,452,2272,140,902
Events in quadrant B13,566,1042,165,914
Events in quadrant C12,256,6532,104,856
Events in quadrant D22,690,3581,948,306

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0690
B0690
C0690
D0690

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0578630
B0577980
C0549270
D0856620

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05500
B05500
C05500
D05500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A265703331.253293%
B265783161.188953%
C265861460.549161%
D2655622188.352161%

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 33748 26696 54 54 0.16% 0.20%
B 33748 26697 33 33 0.10% 0.12%
C 33748 26702 2 2 0.01% 0.01%
D 33748 26678 1976 1976 5.86% 7.41%

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 0 8 373107 569.19 3239 3171 649.9
A 15 239 234831 356.44 3239 3171 649.9
A 8 15 222769 337.88 3239 3171 649.9
B 4 81 290540 470.99 3254 3186 610.1
B 4 239 199793 322.25 3254 3186 610.1
B 0 214 158793 255.05 3254 3186 610.1
C 14 67 55553 72.52 3119 3131 722.8
C 14 234 32795 41.04 3119 3131 722.8
C 13 61 23917 28.76 3119 3131 722.8
D 1 52 4597604 5739.58 2992 2930 800.5
D 2 16 2702687 3372.48 2992 2930 800.5
D 4 95 2569654 3206.3 2992 2930 800.5

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