ASTROSAT CZTI

Data Quality Report

Orbit 20161224_C02_003T01_9000000924_level2

Creation date: 2017-09-22T15:44:30.453560
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/AS1C02_003T01_9000000924cztM0_level2.evt modeM0/AS1C02_003T01_9000000924cztM0_level2_quad_clean.evt
Size (bytes)7,124,014,0801,333,725,120
Size6.6 GB 1.2 GB
Events in quadrant A50,200,0288,459,525
Events in quadrant B48,384,5848,594,753
Events in quadrant C47,354,4038,364,813
Events in quadrant D62,788,0927,844,613

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021260
B021260
C021260
D021260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01550
B01550
C01550
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02219930
B02162110
C02154550
D02571000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10407117021.635422%
B10407214901.431701%
C10407211791.132870%
D10407146784.495008%

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 123974 104094 287 287 0.23% 0.28%
B 123975 104095 90 90 0.07% 0.09%
C 123975 104096 105 105 0.08% 0.10%
D 123975 104096 3203 3203 2.58% 3.08%

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 14 111 2531481 1037.5 12073 11815 2428.6
A 8 15 796343 323.04 12073 11815 2428.6
A 13 251 333302 132.38 12073 11815 2428.6
B 10 252 466703 196.58 12237 11938 2313.3
B 4 81 356956 149.14 12237 11938 2313.3
B 12 111 242720 99.76 12237 11938 2313.3
C 12 16 375816 133.81 11831 11890 2719.7
C 12 4 325459 115.29 11831 11890 2719.7
C 9 16 156616 53.21 11831 11890 2719.7
D 2 33 8973094 3219.91 11520 11176 2783.3
D 8 195 6072704 2177.83 11520 11176 2783.3
D 2 136 1010372 359.0 11520 11176 2783.3

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