ASTROSAT CZTI

Data Quality Report

Orbit 20161017_A02_098T01_9000000736_level2

Creation date: 2016-10-21T09:51:33.909368
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/AS1A02_098T01_9000000736cztM0_level2_bc.evt modeM0/AS1A02_098T01_9000000736cztM0_level2_quad_clean.evt
Size (bytes)4,624,585,9201,650,741,120
Size4.3 GB 1.5 GB
Events in quadrant A26,895,81910,329,721
Events in quadrant B39,297,27610,275,664
Events in quadrant C27,608,84410,378,048
Events in quadrant D37,172,9599,880,393

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01960
B01960
C01960
D01960

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027200
B027200
C027200
D027200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02776860
B03154240
C02792240
D03082700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13330017701.327832%
B13330035182.639160%
C13330114451.084013%
D13330126942.020990%

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 153425 133301 59 59 0.04% 0.04%
B 153425 133299 583 583 0.38% 0.44%
C 153425 133304 45 45 0.03% 0.03%
D 153425 133306 263 263 0.17% 0.20%

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 50 715680 481.01 6686 6539 1474.3
A 15 174 91462 57.6 6686 6539 1474.3
A 7 16 90024 56.63 6686 6539 1474.3
B 15 204 5006087 3899.35 6715 6528 1282.2
B 5 172 3941971 3069.41 6715 6528 1282.2
B 0 214 1131949 877.76 6715 6528 1282.2
C 9 16 1065219 732.63 6560 6464 1445.1
C 1 16 208654 139.91 6560 6464 1445.1
C 3 9 172371 114.8 6560 6464 1445.1
D 2 152 4464980 2920.04 6587 6338 1526.9
D 8 195 1584870 1033.81 6587 6338 1526.9
D 0 11 1155792 752.8 6587 6338 1526.9

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