ASTROSAT CZTI

Data Quality Report

Orbit 20180921_C03_015T04_9000002382_level2

Creation date: 2018-09-22T10:21:49.915371
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/AS1C03_015T04_9000002382cztM0_level2_bc.evt modeM0/AS1C03_015T04_9000002382cztM0_level2_quad_clean.evt
Size (bytes)325,946,880166,106,880
Size310.8 MB 158.4 MB
Events in quadrant A2,292,6881,098,460
Events in quadrant B2,734,9631,116,449
Events in quadrant C1,883,7001,079,659
Events in quadrant D2,289,5401,062,455

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01980
B01980
C01980
D01980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216510
B0223620
C0199270
D0212670

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A97281321.356908%
B97281191.223273%
C9728470.483141%
D97281611.655016%

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 10118 9727 0 0 0.00% 0.00%
B 10118 9727 2 2 0.02% 0.02%
C 10118 9728 0 0 0.00% 0.00%
D 10118 9727 10 10 0.10% 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 15 174 427169 4062.92 472 462 105.0
A 9 143 19165 178.08 472 462 105.0
A 8 247 17973 166.73 472 462 105.0
B 5 65 631327 6723.3 479 467 93.8
B 0 189 59312 627.13 479 467 93.8
B 0 229 37535 395.05 479 467 93.8
C 3 233 45663 407.77 459 456 110.9
C 3 9 37262 332.0 459 456 110.9
C 0 207 10596 91.46 459 456 110.9
D 1 52 382045 3408.57 468 450 112.0
D 10 70 51990 460.38 468 450 112.0
D 2 234 43420 383.83 468 450 112.0

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