ASTROSAT CZTI

Data Quality Report

Orbit 20190713_A05_176T03_9000003028_level2

Creation date: 2019-07-15T15:00:57.986148
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_176T03_9000003028cztM0_level2.evt modeM0/AS1A05_176T03_9000003028cztM0_level2_quad_clean.evt
Size (bytes)1,347,333,120188,055,360
Size1.3 GB 179.3 MB
Events in quadrant A7,030,3331,226,265
Events in quadrant B8,368,8731,219,062
Events in quadrant C7,100,3101,181,860
Events in quadrant D17,309,7111,050,024

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0306970
B0343080
C0303520
D0616360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02980
B02980
C02980
D02980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A147542701.830012%
B147543892.636573%
C147542701.830012%
D14754334422.665040%

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 16654 14754 33 33 0.20% 0.22%
B 16654 14754 134 134 0.80% 0.91%
C 16654 14754 3 3 0.02% 0.02%
D 16653 14753 2986 2986 17.93% 20.24%

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 5 16 128929 350.99 1772 1728 362.4
A 12 96 48581 129.28 1772 1728 362.4
A 9 143 23706 60.64 1772 1728 362.4
B 7 220 490989 1454.17 1762 1716 336.5
B 0 189 266126 785.85 1762 1716 336.5
B 0 197 236994 699.27 1762 1716 336.5
C 14 238 262923 654.59 1702 1708 399.0
C 3 233 152206 377.14 1702 1708 399.0
C 0 207 35691 85.16 1702 1708 399.0
D 7 238 3506490 9101.93 1572 1524 385.1
D 1 52 2510769 6516.17 1572 1524 385.1
D 5 222 2296485 5959.71 1572 1524 385.1

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