ASTROSAT CZTI

Data Quality Report

Orbit 20190423_A05_204T01_9000002856_level2

Creation date: 2019-04-29T16:55:37.523225
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/AS1A05_204T01_9000002856cztM0_level2_bc.evt modeM0/AS1A05_204T01_9000002856cztM0_level2_quad_clean.evt
Size (bytes)14,454,097,9204,441,268,160
Size13.5 GB 4.1 GB
Events in quadrant A71,945,46129,195,967
Events in quadrant B73,866,55429,376,026
Events in quadrant C70,393,69428,057,762
Events in quadrant D198,849,04625,048,023

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07027800
B07071820
C07054110
D012288850

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05070
B05070
C05070
D05070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A067860
B067860
C067860
D067860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A33346939891.196213%
B33347142021.260080%
C33347151121.532967%
D3334705627716.876181%

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 383792 333444 94 94 0.02% 0.03%
B 383792 333441 101 101 0.03% 0.03%
C 383792 333446 12 12 0.00% 0.00%
D 383792 333418 7590 7590 1.98% 2.28%

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 11 29 1072738 275.63 17829 17508 3828.4
A 4 2 785848 200.69 17829 17508 3828.4
A 5 16 639608 162.5 17829 17508 3828.4
B 0 229 1528426 452.99 17857 17422 3335.7
B 3 64 869493 255.44 17857 17422 3335.7
B 0 190 824244 241.88 17857 17422 3335.7
C 3 233 3898709 968.08 17105 17008 4009.7
C 9 54 206224 47.19 17105 17008 4009.7
C 0 207 130077 28.2 17105 17008 4009.7
D 7 238 52440769 13904.92 16268 15684 3770.3
D 10 66 37445859 9927.76 16268 15684 3770.3
D 1 52 27024325 7163.61 16268 15684 3770.3

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