ASTROSAT CZTI

Data Quality Report

Orbit 20180101_C03_014T03_9000001808_level2

Creation date: 2018-08-01T23:14:37.716110
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/AS1C03_014T03_9000001808cztM0_level2_bc.evt modeM0/AS1C03_014T03_9000001808cztM0_level2_quad_clean.evt
Size (bytes)2,290,731,840954,066,240
Size2.1 GB 909.9 MB
Events in quadrant A17,221,7196,420,897
Events in quadrant B20,753,1556,299,866
Events in quadrant C11,499,0716,449,451
Events in quadrant D16,347,5946,149,481

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0610
B0610
C0610
D0610

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010620
B010620
C010620
D010620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01368030
B01474000
C01109560
D01265890

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5216315743.017464%
B5216341387.932826%
C521635010.960451%
D5216317073.272434%

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 58344 52163 26 26 0.04% 0.05%
B 58344 52148 195 195 0.33% 0.37%
C 58344 52165 16 16 0.03% 0.03%
D 58344 52163 429 429 0.74% 0.82%

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 13 251 5102156 8877.25 2598 2553 574.5
A 8 15 670169 1162.17 2598 2553 574.5
A 1 162 634567 1100.19 2598 2553 574.5
B 4 206 5812231 11960.18 2548 2488 485.8
B 4 239 2595519 5338.12 2548 2488 485.8
B 3 64 901840 1851.44 2548 2488 485.8
C 15 208 1192546 2098.84 2557 2528 567.0
C 4 175 151281 262.36 2557 2528 567.0
C 5 112 52077 87.39 2557 2528 567.0
D 1 52 2149551 3541.72 2557 2465 606.2
D 10 199 2118012 3489.7 2557 2465 606.2
D 13 249 406943 667.21 2557 2465 606.2

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