ASTROSAT CZTI

Data Quality Report

Orbit 20160804_G05_154T01_9000000576_level2

Creation date: 2017-10-17T22:06:16.522765
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/AS1G05_154T01_9000000576cztM0_level2.evt modeM0/AS1G05_154T01_9000000576cztM0_level2_quad_clean.evt
Size (bytes)8,634,859,2001,114,364,160
Size8.0 GB 1.0 GB
Events in quadrant A48,406,8847,028,244
Events in quadrant B54,813,5587,065,122
Events in quadrant C48,191,5817,068,295
Events in quadrant D103,352,7645,725,184

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01230
B01230
C01230
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02126090
B02286870
C02108570
D03771890

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020340
B020340
C020340
D020300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10007221872.185426%
B10006236303.627751%
C10008414451.443787%
D1000722314523.128348%

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 119298 100268 267 267 0.22% 0.27%
B 119298 100247 1327 1327 1.11% 1.32%
C 119298 100270 129 129 0.11% 0.13%
D 119297 100284 19505 19505 16.35% 19.45%

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 8 15 928972 383.04 11770 11530 2395.1
A 0 118 785797 323.27 11770 11530 2395.1
A 15 174 656950 269.47 11770 11530 2395.1
B 10 16 3137485 1375.11 11889 11604 2273.2
B 14 167 2458589 1076.46 11889 11604 2273.2
B 5 200 1028923 447.53 11889 11604 2273.2
C 14 48 2093255 780.85 11479 11521 2666.0
C 8 208 450179 164.54 11479 11521 2666.0
C 9 247 357107 129.63 11479 11521 2666.0
D 8 112 40800260 17288.24 9769 9488 2359.5
D 13 235 20103112 8516.22 9769 9488 2359.5
D 2 234 1287589 541.69 9769 9488 2359.5

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