ASTROSAT CZTI

Data Quality Report

Orbit 20180110_A04_212T01_9000001834_level2

Creation date: 2018-07-31T13:37:59.155483
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_212T01_9000001834cztM0_level2_bc.evt modeM0/AS1A04_212T01_9000001834cztM0_level2_quad_clean.evt
Size (bytes)431,239,680190,468,800
Size411.3 MB 181.6 MB
Events in quadrant A3,795,0031,270,009
Events in quadrant B2,859,9431,298,205
Events in quadrant C2,288,4621,255,121
Events in quadrant D3,383,2571,207,138

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0291540
B0245590
C0227250
D0262980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A106633723.488699%
B106631791.678702%
C106631511.416112%
D106633273.066679%

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 11254 10664 0 0 0.00% 0.00%
B 11253 10663 2 2 0.02% 0.02%
C 11253 10663 6 6 0.05% 0.06%
D 11253 10663 28 28 0.25% 0.26%

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 939715 8123.25 511 499 115.6
A 13 251 646531 5587.51 511 499 115.6
A 1 162 166597 1436.58 511 499 115.6
B 4 239 482345 4681.17 519 506 102.9
B 10 245 147272 1425.86 519 506 102.9
B 0 85 49849 479.38 519 506 102.9
C 15 208 280891 2470.41 497 490 113.5
C 14 234 39218 341.2 497 490 113.5
C 8 128 8936 74.41 497 490 113.5
D 1 52 698880 5769.86 500 480 121.0
D 13 104 376066 3102.92 500 480 121.0
D 5 222 86513 710.77 500 480 121.0

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