ASTROSAT CZTI

Data Quality Report

Orbit 20151210_P01_180T10_9000000196_level2

Creation date: 2016-09-06T17:56:54.572848
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_180T10_9000000196cztM0_level2_bc.evt modeM0/AS1P01_180T10_9000000196cztM0_level2_quad_clean.evt
Size (bytes)111,493,44049,737,600
Size106.3 MB 47.4 MB
Events in quadrant A581,960332,911
Events in quadrant B1,150,561309,735
Events in quadrant C751,053313,043
Events in quadrant D659,647315,681

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140741
B0162401
C0141271
D0133691

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A330430.090799%
B33042166.537530%
C330430.090799%
D330430.090799%

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 4388 3303 0 0 0.00% 0.00%
B 4389 3304 76 76 1.73% 2.30%
C 4389 3304 0 0 0.00% 0.00%
D 4389 3304 0 0 0.00% 0.00%

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 8 255 1864 49.69 150 146 34.6
A 13 9 1567 41.1 150 146 34.6
A 13 235 854 20.48 150 146 34.6
B 5 191 518970 18379.41 143 140 28.2
B 15 22 45871 1620.01 143 140 28.2
B 5 249 10042 350.78 143 140 28.2
C 15 241 152359 4678.72 143 140 32.5
C 3 79 19711 601.55 143 140 32.5
C 3 111 9335 282.62 143 140 32.5
D 2 216 32509 939.13 145 141 34.5
D 13 169 17341 499.04 145 141 34.5
D 15 13 12869 369.29 145 141 34.5

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