ASTROSAT CZTI

Data Quality Report

Orbit 20160309_T01_045T01_9000000364_level2

Creation date: 2017-10-31T14:25:20.271483
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/AS1T01_045T01_9000000364cztM0_level2.evt modeM0/AS1T01_045T01_9000000364cztM0_level2_quad_clean.evt
Size (bytes)2,283,491,520318,948,480
Size2.1 GB 304.2 MB
Events in quadrant A15,026,1071,938,238
Events in quadrant B14,688,3781,972,679
Events in quadrant C20,691,1941,906,398
Events in quadrant D16,814,0821,868,436

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0638980
B0631980
C0809040
D0705180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05840
B05840
C05840
D05840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A286998703.031465%
B286998362.912993%
C2869910683.721384%
D2869913684.766717%

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 31584 28703 135 135 0.43% 0.47%
B 31584 28703 140 140 0.44% 0.49%
C 31584 28703 310 310 0.98% 1.08%
D 31584 28703 855 855 2.71% 2.98%

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 14 1321782 1884.55 3420 3342 699.6
A 8 15 259639 366.35 3420 3342 699.6
A 3 1 214667 302.06 3420 3342 699.6
B 15 85 518899 783.37 3454 3368 658.1
B 6 36 272345 408.72 3454 3368 658.1
B 10 244 252668 378.82 3454 3368 658.1
C 5 234 7515438 9787.33 3298 3312 767.5
C 14 223 180723 231.14 3298 3312 767.5
C 10 82 66008 81.68 3298 3312 767.5
D 13 53 2424467 3105.48 3263 3183 779.7
D 7 67 543757 693.33 3263 3183 779.7
D 13 169 518160 660.5 3263 3183 779.7

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