ASTROSAT CZTI

Data Quality Report

Orbit 20180605_T02_049T01_9000002142_level2

Creation date: 2018-06-11T17:17:34.914367
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/AS1T02_049T01_9000002142cztM0_level2_bc.evt modeM0/AS1T02_049T01_9000002142cztM0_level2_quad_clean.evt
Size (bytes)2,619,138,2401,119,306,240
Size2.4 GB 1.0 GB
Events in quadrant A21,678,5897,341,668
Events in quadrant B16,106,9037,458,523
Events in quadrant C16,796,1497,444,724
Events in quadrant D20,248,0817,136,969

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013500
B013500
C013500
D013500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01607230
B01433530
C01428720
D01559540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01010
B01010
C01010
D01010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6594515282.317082%
B659458641.310183%
C659455330.808249%
D6594515122.292820%

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 76381 65948 43 43 0.06% 0.07%
B 76381 65945 16 16 0.02% 0.02%
C 76381 65947 3 3 0.00% 0.00%
D 76381 65946 439 439 0.57% 0.67%

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 15 7864570 10749.52 3337 3279 731.3
A 12 189 465049 631.42 3337 3279 731.3
A 0 23 341711 462.77 3337 3279 731.3
B 3 209 611260 961.65 3389 3306 632.2
B 0 189 459809 722.09 3389 3306 632.2
B 0 219 427414 670.85 3389 3306 632.2
C 3 233 3658378 4964.34 3330 3295 736.3
C 10 22 34862 42.87 3330 3295 736.3
C 0 207 32846 40.14 3330 3295 736.3
D 12 110 4790759 5778.57 3324 3213 828.5
D 10 199 1035210 1245.62 3324 3213 828.5
D 2 234 277797 331.42 3324 3213 828.5

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