ASTROSAT CZTI

Data Quality Report

Orbit 20180109_A04_210T02_9000001826_level2

Creation date: 2018-07-30T15:06:48.117357
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/AS1A04_210T02_9000001826cztM0_level2_bc.evt modeM0/AS1A04_210T02_9000001826cztM0_level2_quad_clean.evt
Size (bytes)603,259,200180,319,680
Size575.3 MB 172.0 MB
Events in quadrant A4,988,0721,104,556
Events in quadrant B3,695,9501,145,340
Events in quadrant C2,874,4151,136,372
Events in quadrant D5,699,9321,057,317

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0398640
B0335620
C0308920
D0395180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03000
B03000
C03000
D03000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A147478205.560453%
B147477455.051875%
C147473782.563233%
D1474710887.377772%

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 15808 14749 0 0 0.00% 0.00%
B 15808 14749 0 0 0.00% 0.00%
C 15808 14748 1 1 0.01% 0.01%
D 15808 14749 295 295 1.87% 2.00%

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 8 15 1349054 8523.27 715 698 158.2
A 13 251 537012 3390.16 715 698 158.2
A 1 162 224911 1417.3 715 698 158.2
B 4 239 415206 2904.69 730 708 142.7
B 0 85 149536 1042.95 730 708 142.7
B 3 64 47502 327.92 730 708 142.7
C 15 208 44413 269.22 719 707 162.3
C 0 207 11537 66.71 719 707 162.3
C 8 222 4910 25.89 719 707 162.3
D 1 52 1989066 11737.64 708 680 169.4
D 14 34 434496 2560.86 708 680 169.4
D 13 104 143393 842.45 708 680 169.4

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