ASTROSAT CZTI

Data Quality Report

Orbit 20160426_T01_118T01_9000000430_level2

Creation date: 2018-05-17T06:25:08.564933
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/AS1T01_118T01_9000000430cztM0_level2.evt modeM0/AS1T01_118T01_9000000430cztM0_level2_quad_clean.evt
Size (bytes)9,832,095,3601,264,556,160
Size9.2 GB 1.2 GB
Events in quadrant A56,161,2677,963,589
Events in quadrant B56,514,7818,090,860
Events in quadrant C117,644,6877,052,428
Events in quadrant D60,009,5937,616,767

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022440
B022440
C022440
D022440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02435830
B02410070
C04249610
D02576010

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01530
B01530
C01530
D01530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11047234523.124774%
B11047226442.393367%
C1104492364521.408071%
D11047233333.017054%

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 125803 110489 1286 1286 1.02% 1.16%
B 125803 110487 657 657 0.52% 0.59%
C 125803 110466 19468 19468 15.47% 17.62%
D 125802 110488 2056 2056 1.63% 1.86%

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 12 247 3657913 1407.57 12829 12552 2589.8
A 0 13 1054146 402.19 12829 12552 2589.8
A 8 15 935822 356.5 12829 12552 2589.8
B 3 0 1421517 565.26 13088 12778 2492.2
B 15 204 1250128 496.49 13088 12778 2492.2
B 4 81 1173569 465.77 13088 12778 2492.2
C 0 219 62791742 23771.21 11388 11448 2641.0
C 14 223 3810928 1438.64 11388 11448 2641.0
C 1 192 1833765 690.0 11388 11448 2641.0
D 12 233 4817258 1607.87 12485 12142 2988.5
D 13 223 2272872 756.48 12485 12142 2988.5
D 2 136 1558272 517.36 12485 12142 2988.5

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