ASTROSAT CZTI

Data Quality Report

Orbit 20160624_G05_173T01_9000000514_level2

Creation date: 2016-09-06T17:48:59.599900
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_173T01_9000000514cztM0_level2_bc.evt modeM0/AS1G05_173T01_9000000514cztM0_level2_quad_clean.evt
Size (bytes)3,534,923,5201,209,415,680
Size3.3 GB 1.1 GB
Events in quadrant A24,628,8647,260,849
Events in quadrant B23,879,1877,328,618
Events in quadrant C21,307,0867,252,525
Events in quadrant D29,457,2446,966,014

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02450820
B02385690
C02336260
D02572580

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023220
B023160
C023220
D023200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01550
B01550
C01550
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11415327082.372255%
B11416918871.652813%
C11415913781.207088%
D11415022952.010512%

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 128966 114235 71 71 0.06% 0.06%
B 128966 114236 44 44 0.03% 0.04%
C 128967 114236 4 4 0.00% 0.00%
D 128967 114236 312 312 0.24% 0.27%

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 1890608 1561.95 5424 5301 1207.0
A 0 118 856816 705.47 5424 5301 1207.0
A 8 15 214393 173.23 5424 5301 1207.0
B 15 204 734442 685.71 5493 5322 1063.3
B 14 167 651524 607.73 5493 5322 1063.3
B 4 81 562209 523.73 5493 5322 1063.3
C 9 144 161367 133.0 5318 5219 1174.1
C 12 4 79037 62.87 5318 5219 1174.1
C 8 128 58161 45.09 5318 5219 1174.1
D 11 132 3150193 2521.19 5334 5116 1247.5
D 2 232 1644313 1314.03 5334 5116 1247.5
D 2 63 815152 649.35 5334 5116 1247.5

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