ASTROSAT CZTI

Data Quality Report

Orbit 20190818_A05_088T02_9000003106_level2

Creation date: 2019-08-20T14:22:23.537640
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_088T02_9000003106cztM0_level2_bc.evt modeM0/AS1A05_088T02_9000003106cztM0_level2_quad_clean.evt
Size (bytes)2,559,096,000886,795,200
Size2.4 GB 845.7 MB
Events in quadrant A14,610,6385,714,338
Events in quadrant B18,099,3615,701,715
Events in quadrant C13,956,6835,455,657
Events in quadrant D26,064,7465,188,567

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014240
B014240
C014240
D014240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01445810
B01582870
C01444490
D01826050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A700109431.346950%
B7001017632.518212%
C7001011671.666905%
D7001036965.279246%

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 81375 70014 4 4 0.00% 0.01%
B 81375 70012 30 30 0.04% 0.04%
C 81375 70015 0 0 0.00% 0.00%
D 81375 70013 1375 1375 1.69% 1.96%

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 6 16 155415 188.0 3742 3670 807.2
A 13 254 84647 100.32 3742 3670 807.2
A 0 226 24254 25.5 3742 3670 807.2
B 0 182 1146512 1621.53 3765 3674 704.8
B 7 220 764922 1080.11 3765 3674 704.8
B 0 189 601571 848.33 3765 3674 704.8
C 9 54 51839 56.68 3599 3577 851.4
C 10 91 22197 21.87 3599 3577 851.4
C 13 61 20776 20.2 3599 3577 851.4
D 1 52 9611743 11494.48 3596 3472 835.9
D 1 20 401635 476.33 3596 3472 835.9
D 12 233 382237 453.12 3596 3472 835.9

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