ASTROSAT CZTI

Data Quality Report

Orbit 20161117_G06_139T05_9000000804_level2

Creation date: 2017-09-19T03:08:45.543459
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/AS1G06_139T05_9000000804cztM0_level2.evt modeM0/AS1G06_139T05_9000000804cztM0_level2_quad_clean.evt
Size (bytes)2,526,641,280515,301,120
Size2.4 GB 491.4 MB
Events in quadrant A19,547,2994,000,184
Events in quadrant B19,554,3793,083,788
Events in quadrant C17,160,0083,049,204
Events in quadrant D17,760,1662,938,000

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07480
B07640
C07540
D07500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0824170
B0828480
C0772960
D0792810

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0530
B0520
C0510
D0530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A367814731.285990%
B368889222.499458%
C370063210.867427%
D369274141.121131%

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 57659 38788 32 32 0.06% 0.08%
B 57659 38961 406 406 0.70% 1.04%
C 57659 39076 35 35 0.06% 0.09%
D 57659 39003 120 120 0.21% 0.31%

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 13 34 1545742 1789.93 4283 4190 861.2
A 8 15 1065892 1232.76 4283 4190 861.2
A 15 234 288683 330.33 4283 4190 861.2
B 3 64 2129213 2571.48 4322 4214 826.4
B 0 219 266061 316.86 4322 4214 826.4
B 15 35 121830 142.33 4322 4214 826.4
C 12 16 720933 745.44 4180 4199 961.5
C 9 16 70838 69.31 4180 4199 961.5
C 1 16 41419 38.71 4180 4199 961.5
D 2 136 578398 562.0 4171 4045 1022.0
D 12 110 366284 354.45 4171 4045 1022.0
D 2 206 326658 315.67 4171 4045 1022.0

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