ASTROSAT CZTI

Data Quality Report

Orbit 20160720_G05_230T02_9000000548_level2

Creation date: 2016-09-06T17:48:18.150301
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_230T02_9000000548cztM0_level2_bc.evt modeM0/AS1G05_230T02_9000000548cztM0_level2_quad_clean.evt
Size (bytes)3,697,706,8801,417,489,920
Size3.4 GB 1.3 GB
Events in quadrant A21,965,0868,949,875
Events in quadrant B26,920,4678,858,033
Events in quadrant C25,134,0838,839,639
Events in quadrant D30,330,7628,608,988

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01530
B01520
C01520
D01530

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02308970
B02457730
C02416300
D02593420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022860
B022860
C022860
D022860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11203213471.202335%
B11203421481.917275%
C11203315541.387091%
D11203321461.915507%

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 127103 112034 13 13 0.01% 0.01%
B 127103 112035 177 177 0.14% 0.16%
C 127103 112035 70 70 0.06% 0.06%
D 127103 112036 110 110 0.09% 0.10%

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 475645 398.92 5328 5216 1179.3
A 8 15 396991 332.22 5328 5216 1179.3
A 13 14 169689 139.47 5328 5216 1179.3
B 14 167 2575680 2485.97 5336 5176 1034.0
B 10 16 2279234 2199.27 5336 5176 1034.0
B 7 252 539111 516.37 5336 5176 1034.0
C 9 247 1957668 1666.74 5241 5160 1171.5
C 9 16 1685879 1434.73 5241 5160 1171.5
C 14 48 544456 460.37 5241 5160 1171.5
D 2 63 3689526 2976.36 5287 5087 1237.9
D 2 37 1331132 1071.21 5287 5087 1237.9
D 9 35 891399 715.98 5287 5087 1237.9

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