ASTROSAT CZTI

Data Quality Report

Orbit 20171218_A04_044T01_9000001782_level2

Creation date: 2017-12-21T11:55:25.906586
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_044T01_9000001782cztM0_level2.evt modeM0/AS1A04_044T01_9000001782cztM0_level2_quad_clean.evt
Size (bytes)4,941,115,200782,968,320
Size4.6 GB 746.7 MB
Events in quadrant A35,097,0674,912,928
Events in quadrant B33,193,4395,028,512
Events in quadrant C29,210,8644,891,131
Events in quadrant D47,850,4584,515,954

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012920
B012920
C012920
D012920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0870
B0870
C0870
D0870

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460490
B01399920
C01310500
D01847460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6365321933.445242%
B6365312341.938636%
C636534610.724239%
D6365355968.791416%

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 72249 63657 1265 1265 1.75% 1.99%
B 72249 63658 249 249 0.34% 0.39%
C 72249 63660 25 25 0.03% 0.04%
D 72248 63659 5040 5040 6.98% 7.92%

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 5 16 3255428 2153.82 7542 7389 1508.0
A 1 162 708831 465.14 7542 7389 1508.0
A 13 248 628212 411.68 7542 7389 1508.0
B 4 239 2226238 1536.2 7645 7462 1444.3
B 15 204 540471 369.04 7645 7462 1444.3
B 0 85 348499 236.12 7645 7462 1444.3
C 14 234 196198 109.75 7439 7487 1719.5
C 13 61 54165 27.15 7439 7487 1719.5
C 8 128 19206 6.82 7439 7487 1719.5
D 1 52 16542174 9842.91 7058 6871 1679.9
D 8 195 1638214 971.08 7058 6871 1679.9
D 13 104 771826 455.35 7058 6871 1679.9

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