ASTROSAT CZTI

Data Quality Report

Orbit 20160720_G05_167T02_9000000546_level2

Creation date: 2016-09-06T17:48:20.754922
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_167T02_9000000546cztM0_level2_bc.evt modeM0/AS1G05_167T02_9000000546cztM0_level2_quad_clean.evt
Size (bytes)955,428,480288,014,400
Size911.2 MB 274.7 MB
Events in quadrant A6,335,5691,677,709
Events in quadrant B6,403,3001,711,793
Events in quadrant C6,874,3441,678,118
Events in quadrant D7,282,0351,603,457

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0570
B0570
C0570
D0570

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0623420
B0621560
C0643890
D0653180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06060
B06060
C06060
D06060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A298522150.720220%
B298512380.797293%
C298522920.978159%
D298542950.988142%

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 35459 29855 4 4 0.01% 0.01%
B 35459 29853 11 11 0.03% 0.04%
C 35459 29855 12 12 0.03% 0.04%
D 35459 29854 33 33 0.09% 0.11%

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 13 251 343262 1030.55 1500 1464 331.7
A 15 234 74869 221.32 1500 1464 331.7
A 7 16 47889 139.98 1500 1464 331.7
B 14 167 309032 1063.29 1530 1488 289.2
B 5 200 105541 359.75 1530 1488 289.2
B 15 204 71709 242.78 1530 1488 289.2
C 9 247 670115 2014.96 1477 1454 331.8
C 14 48 333828 1001.59 1477 1454 331.8
C 9 16 34503 99.59 1477 1454 331.8
D 2 37 529987 1557.82 1466 1413 339.3
D 13 239 363979 1068.56 1466 1413 339.3
D 9 35 211691 619.73 1466 1413 339.3

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