ASTROSAT CZTI

Data Quality Report

Orbit 20151216_P01_997T02_9000000218_level2

Creation date: 2017-10-26T20:12:35.151178
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/AS1P01_997T02_9000000218cztM0_level2.evt modeM0/AS1P01_997T02_9000000218cztM0_level2_quad_clean.evt
Size (bytes)13,107,908,1601,087,136,640
Size12.2 GB 1.0 GB
Events in quadrant A79,808,4157,546,902
Events in quadrant B87,194,0237,523,615
Events in quadrant C80,098,2517,332,426
Events in quadrant D145,516,7885,956,795

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0770
B0770
C0770
D0770

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013500
B013500
C013500
D013500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02844650
B03063110
C02851410
D04833850

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A664934460.670747%
B6649314682.207751%
C664932730.410570%
D664932615539.334968%

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 82331 66502 2758 2758 3.35% 4.15%
B 82330 66502 4717 4717 5.73% 7.09%
C 82331 66502 2528 2528 3.07% 3.80%
D 82331 66503 39697 39697 48.22% 59.69%

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 4 32 824018 164.98 20391 20504 4870.4
A 12 243 483082 94.98 20391 20504 4870.4
A 15 233 106279 17.61 20391 20504 4870.4
B 8 234 3534162 709.87 20986 21106 4948.9
B 2 32 1669891 333.16 20986 21106 4948.9
B 5 191 641643 125.39 20986 21106 4948.9
C 15 241 3204412 594.83 19174 19825 5353.8
C 9 83 1431857 263.74 19174 19825 5353.8
C 3 111 243381 41.76 19174 19825 5353.8
D 1 239 78867223 15490.41 16575 17196 5090.2
D 10 84 1673579 325.4 16575 17196 5090.2
D 2 16 1151112 222.76 16575 17196 5090.2

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