ASTROSAT CZTI

Data Quality Report

Orbit 20160507_G05_241T02_9000000448_level2

Creation date: 2017-10-30T12:10:49.962664
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_241T02_9000000448cztM0_level2.evt modeM0/AS1G05_241T02_9000000448cztM0_level2_quad_clean.evt
Size (bytes)8,239,492,8001,364,014,080
Size7.7 GB 1.3 GB
Events in quadrant A54,334,9408,394,314
Events in quadrant B76,103,6648,518,590
Events in quadrant C55,307,7428,479,969
Events in quadrant D56,129,1498,135,075

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023100
B023100
C023100
D023100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02422200
B03026760
C02435040
D02512790

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11359226032.291535%
B11359235643.137545%
C11359219151.685858%
D11359026392.323268%

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 131176 113620 521 521 0.40% 0.46%
B 131176 113620 572 572 0.44% 0.50%
C 131176 113620 449 449 0.34% 0.40%
D 131176 113619 1096 1096 0.84% 0.96%

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 50 2287348 837.34 13264 12951 2716.2
A 8 15 453713 162.27 13264 12951 2716.2
A 0 118 422807 150.89 13264 12951 2716.2
B 15 204 20268925 7855.62 13382 13067 2578.5
B 2 249 1123728 430.74 13382 13067 2578.5
B 3 0 836029 319.16 13382 13067 2578.5
C 1 192 1658902 538.64 13020 13072 3055.5
C 14 223 817155 263.16 13020 13072 3055.5
C 8 208 548582 175.26 13020 13072 3055.5
D 13 223 3440262 1092.4 12932 12542 3137.8
D 10 172 840882 263.99 12932 12542 3137.8
D 12 233 749793 234.96 12932 12542 3137.8

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