ASTROSAT CZTI

Data Quality Report

Orbit 20160930_T01_137T01_9000000694_level2

Creation date: 2016-10-21T05:31:03.820602
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/AS1T01_137T01_9000000694cztM0_level2_bc.evt modeM0/AS1T01_137T01_9000000694cztM0_level2_quad_clean.evt
Size (bytes)120,467,52023,713,920
Size114.9 MB 22.6 MB
Events in quadrant A574,543127,011
Events in quadrant B717,181125,876
Events in quadrant C780,703121,281
Events in quadrant D1,347,972114,123

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A065140
B067810
C073160
D087600

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0660
D0660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A323810.030883%
B3224150.465261%
C32121183.673724%
D3195752.347418%

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 3305 3299 1 1 0.03% 0.03%
B 3305 3295 3 3 0.09% 0.09%
C 3305 3294 43 43 1.30% 1.31%
D 3305 3285 19 19 0.57% 0.58%

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 10791 306.21 144 140 34.8
A 0 247 4240 117.87 144 140 34.8
A 15 174 2322 62.73 144 140 34.8
B 15 204 80570 2639.38 144 140 30.5
B 4 48 32740 1069.8 144 140 30.5
B 11 51 18491 602.2 144 140 30.5
C 1 241 241123 7478.72 136 133 32.2
C 14 67 3034 90.03 136 133 32.2
C 9 247 1821 52.38 136 133 32.2
D 2 33 522292 14840.05 138 131 35.2
D 11 192 95066 2698.1 138 131 35.2
D 8 195 73891 2096.29 138 131 35.2

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