ASTROSAT CZTI

Data Quality Report

Orbit 20190109_T03_070T07_9000002644_level2

Creation date: 2019-01-10T10:58:54.328635
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/AS1T03_070T07_9000002644cztM0_level2_bc.evt modeM0/AS1T03_070T07_9000002644cztM0_level2_quad_clean.evt
Size (bytes)595,290,240173,805,120
Size567.7 MB 165.8 MB
Events in quadrant A3,146,9611,144,757
Events in quadrant B4,375,2591,126,622
Events in quadrant C4,902,040874,492
Events in quadrant D4,591,2161,099,182

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0312800
B0348730
C0480360
D0357060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03020
B03020
C03020
D03020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A147352071.404818%
B147355163.501866%
C14735323221.934170%
D147354543.081099%

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 17220 14733 3 3 0.02% 0.02%
B 17220 14733 153 153 0.89% 1.04%
C 17220 14730 16 16 0.09% 0.11%
D 17220 14735 116 116 0.67% 0.79%

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 15 174 315473 1913.13 736 721 164.5
A 12 194 4852 25.11 736 721 164.5
A 0 226 4832 24.99 736 721 164.5
B 10 245 1303753 9091.21 733 712 143.3
B 7 220 76748 530.49 733 712 143.3
B 0 219 69937 482.97 733 712 143.3
C 4 254 2271817 15568.87 606 599 145.9
C 3 233 165287 1128.91 606 599 145.9
C 5 218 71329 484.84 606 599 145.9
D 7 238 832122 4897.84 720 697 169.8
D 5 222 619224 3643.68 720 697 169.8
D 2 165 123717 724.7 720 697 169.8

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