ASTROSAT CZTI

Data Quality Report

Orbit 20160617_G05_083T02_9000000498_level2

Creation date: 2016-09-06T17:49:19.933829
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_083T02_9000000498cztM0_level2_bc.evt modeM0/AS1G05_083T02_9000000498cztM0_level2_quad_clean.evt
Size (bytes)1,076,826,240318,548,160
Size1.0 GB 303.8 MB
Events in quadrant A5,939,4732,022,140
Events in quadrant B7,875,6621,989,798
Events in quadrant C10,695,2021,860,847
Events in quadrant D6,276,5181,939,535

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0576070
B0630120
C0842190
D0590050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05400
B05400
C05400
D05400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A266756842.564199%
B266729233.460558%
C26653420115.761828%
D266746162.309365%

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 27427 26678 10 10 0.04% 0.04%
B 27427 26675 47 47 0.17% 0.18%
C 27427 26650 45 45 0.16% 0.17%
D 27427 26671 10 10 0.04% 0.04%

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 0 118 316462 1140.08 1227 1199 276.5
A 8 15 238814 859.28 1227 1199 276.5
A 0 50 225440 810.92 1227 1199 276.5
B 7 221 877773 3623.79 1230 1194 241.9
B 15 204 858899 3545.76 1230 1194 241.9
B 10 16 789878 3260.43 1230 1194 241.9
C 2 53 6200523 24620.99 1110 1090 251.8
C 12 4 67865 265.2 1110 1090 251.8
C 7 222 36381 140.16 1110 1090 251.8
D 12 233 395100 1384.01 1213 1166 284.6
D 10 246 296435 1037.37 1213 1166 284.6
D 13 248 184277 643.33 1213 1166 284.6

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