ASTROSAT CZTI

Data Quality Report

Orbit 20181115_A05_206T01_9000002518_level2

Creation date: 2018-11-28T17:13:18.953952
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/AS1A05_206T01_9000002518cztM0_level2_bc.evt modeM0/AS1A05_206T01_9000002518cztM0_level2_quad_clean.evt
Size (bytes)3,065,561,2801,223,591,040
Size2.9 GB 1.1 GB
Events in quadrant A25,134,9937,859,538
Events in quadrant B21,011,3388,093,456
Events in quadrant C19,090,6067,846,337
Events in quadrant D22,042,7067,668,310

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01130
B01130
C01130
D01130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016680
B016680
C016680
D016680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02062490
B01839990
C01759600
D01832420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8160251206.274356%
B8160317342.124922%
C8160313551.660478%
D8160314941.830815%

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 98452 81596 425 425 0.43% 0.52%
B 98452 81605 76 76 0.08% 0.09%
C 98452 81606 2 2 0.00% 0.00%
D 98452 81603 167 167 0.17% 0.20%

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 15 174 8785858 9848.94 4067 3986 891.7
A 12 189 562224 626.07 4067 3986 891.7
A 0 23 74854 79.48 4067 3986 891.7
B 15 35 1087250 1367.34 4197 4086 792.2
B 3 64 726544 912.0 4197 4086 792.2
B 0 229 538829 675.04 4197 4086 792.2
C 3 233 3318798 3452.07 4070 4050 960.2
C 0 207 48846 46.65 4070 4050 960.2
C 14 225 27513 24.43 4070 4050 960.2
D 1 52 3004444 3054.28 4159 4007 982.4
D 15 0 847100 858.22 4159 4007 982.4
D 10 199 526064 531.42 4159 4007 982.4

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