ASTROSAT CZTI

Data Quality Report

Orbit 20160506_G05_228T02_9000000446_level2

Creation date: 2017-10-31T15:20:26.800220
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_228T02_9000000446cztM0_level2.evt modeM0/AS1G05_228T02_9000000446cztM0_level2_quad_clean.evt
Size (bytes)2,328,422,400384,851,520
Size2.2 GB 367.0 MB
Events in quadrant A15,391,0592,401,135
Events in quadrant B19,368,0392,416,740
Events in quadrant C17,690,6252,459,299
Events in quadrant D15,867,0802,140,083

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0684400
B0780640
C0750150
D0712830

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06660
B06710
C06690
D06500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0660
C0550
D0680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A325875651.733820%
B323416942.145883%
C327865551.692796%
D326125361.643567%

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 96883 32905 107 107 0.11% 0.33%
B 96883 32412 144 144 0.15% 0.44%
C 96883 32997 256 256 0.26% 0.78%
D 96883 32915 293 293 0.30% 0.89%

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 396051 505.68 3814 3733 775.8
A 0 118 231046 293.0 3814 3733 775.8
A 0 226 60411 73.06 3814 3733 775.8
B 15 204 3245364 4367.42 3837 3739 742.2
B 2 249 968213 1299.43 3837 3739 742.2
B 14 167 130678 171.02 3837 3739 742.2
C 1 192 885394 1015.85 3711 3726 867.9
C 14 223 719071 824.22 3711 3726 867.9
C 6 80 481646 550.66 3711 3726 867.9
D 13 223 1157193 1279.29 3686 3574 901.8
D 5 233 214107 233.47 3686 3574 901.8
D 13 239 194363 211.57 3686 3574 901.8

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