ASTROSAT CZTI

Data Quality Report

Orbit 20170830_G07_028T01_9000001500_level2

Creation date: 2017-09-19T12:31:19.531721
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/AS1G07_028T01_9000001500cztM0_level2.evt modeM0/AS1G07_028T01_9000001500cztM0_level2_quad_clean.evt
Size (bytes)1,647,230,400272,508,480
Size1.5 GB 259.9 MB
Events in quadrant A11,099,3631,714,999
Events in quadrant B12,775,7811,760,979
Events in quadrant C10,796,8641,691,360
Events in quadrant D13,733,3721,575,455

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0459250
B0513460
C0457770
D0547490

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04480
B04480
C04480
D04480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A219412691.226015%
B219415422.470261%
C219412030.925209%
D219415892.684472%

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 26942 21943 1 1 0.00% 0.00%
B 26942 21943 140 140 0.52% 0.64%
C 26942 21943 26 26 0.10% 0.12%
D 26942 21943 401 401 1.49% 1.83%

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 80403 135.75 2841 2789 571.7
A 5 16 35931 57.97 2841 2789 571.7
A 0 226 25870 40.37 2841 2789 571.7
B 4 239 943697 1773.61 2843 2783 530.5
B 0 214 248193 462.59 2843 2783 530.5
B 11 51 238088 443.55 2843 2783 530.5
C 14 234 148394 233.16 2726 2747 624.7
C 13 61 20262 28.04 2726 2747 624.7
C 0 207 11523 14.05 2726 2747 624.7
D 1 20 1059365 1660.27 2685 2619 636.5
D 8 195 821039 1285.83 2685 2619 636.5
D 13 122 451823 705.75 2685 2619 636.5

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