ASTROSAT CZTI

Data Quality Report

Orbit 20170714_A03_029T01_9000001384_level2

Creation date: 2017-09-24T10:58:17.843771
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_029T01_9000001384cztM0_level2.evt modeM0/AS1A03_029T01_9000001384cztM0_level2_quad_clean.evt
Size (bytes)6,599,085,1201,175,955,840
Size6.1 GB 1.1 GB
Events in quadrant A45,890,7287,292,140
Events in quadrant B46,518,0967,427,326
Events in quadrant C45,069,8627,317,173
Events in quadrant D55,896,9807,000,805

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01450
D01450

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01997780
B02001560
C01992770
D02317900

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019620
B019540
C019680
D019600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9603114791.540128%
B9600310491.092674%
C960217280.758167%
D9595018381.915581%

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 111684 96409 56 56 0.05% 0.06%
B 111684 96427 26 26 0.02% 0.03%
C 111684 96422 91 91 0.08% 0.09%
D 111684 96387 963 963 0.86% 1.00%

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 14 111 677959 290.9 11459 11234 2291.9
A 1 162 379888 160.85 11459 11234 2291.9
A 15 174 303710 127.61 11459 11234 2291.9
B 0 214 613194 276.04 11579 11317 2180.4
B 12 111 241602 105.62 11579 11317 2180.4
B 0 219 235486 102.81 11579 11317 2180.4
C 9 68 736894 281.8 11190 11246 2575.0
C 14 234 521653 198.21 11190 11246 2575.0
C 13 61 83948 28.23 11190 11246 2575.0
D 1 52 11051242 4124.22 11030 10779 2677.0
D 12 233 831972 306.76 11030 10779 2677.0
D 7 71 525819 192.4 11030 10779 2677.0

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