ASTROSAT CZTI

Data Quality Report

Orbit 20160912_G05_243T01_9000000654_level2

Creation date: 2016-10-20T22:33:49.567625
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_243T01_9000000654cztM0_level2_bc.evt modeM0/AS1G05_243T01_9000000654cztM0_level2_quad_clean.evt
Size (bytes)332,265,60096,698,880
Size316.9 MB 92.2 MB
Events in quadrant A1,909,546571,378
Events in quadrant B2,085,440572,055
Events in quadrant C1,865,547578,026
Events in quadrant D3,532,049533,542

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205690
B0210870
C0203380
D0255940

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01980
B01980
C01980
D01980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A97104935.077240%
B97115055.200288%
C97112732.811245%
D97116937.136237%

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 10076 9711 2 2 0.02% 0.02%
B 10076 9711 1 1 0.01% 0.01%
C 10076 9711 0 0 0.00% 0.00%
D 10076 9711 156 156 1.55% 1.61%

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 0 247 67315 629.69 465 452 106.2
A 0 50 38717 360.36 465 452 106.2
A 0 226 9286 83.19 465 452 106.2
B 4 80 118607 1264.23 474 459 93.5
B 15 204 77103 820.12 474 459 93.5
B 4 48 20670 216.27 474 459 93.5
C 1 16 16286 149.8 467 458 105.7
C 8 128 7914 70.57 467 458 105.7
C 12 4 6226 54.59 467 458 105.7
D 14 34 844054 7675.1 459 439 109.9
D 2 136 525506 4776.99 459 439 109.9
D 2 33 133015 1206.16 459 439 109.9

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