ASTROSAT CZTI

Data Quality Report

Orbit 20180218_G08_043T01_9000001902_level2

Creation date: 2018-07-07T19:15:12.328589
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/AS1G08_043T01_9000001902cztM0_level2_bc.evt modeM0/AS1G08_043T01_9000001902cztM0_level2_quad_clean.evt
Size (bytes)1,688,739,840582,742,080
Size1.6 GB 555.7 MB
Events in quadrant A10,299,6843,782,848
Events in quadrant B16,117,5383,413,203
Events in quadrant C9,265,1643,810,199
Events in quadrant D12,445,8603,610,756

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0951470
B01282960
C0909900
D0999160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0890
B0890
C0890
D0890

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09000
B09000
C09000
D09000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A441705141.163686%
B44170604313.681232%
C441704010.907856%
D441705941.344804%

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 53131 44172 2 2 0.00% 0.00%
B 53131 44019 297 297 0.56% 0.67%
C 53131 44173 0 0 0.00% 0.00%
D 53131 44172 50 50 0.09% 0.11%

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 12 189 578840 1142.45 2357 2313 504.6
A 1 162 283012 556.24 2357 2313 504.6
A 15 239 236367 463.8 2357 2313 504.6
B 4 239 4829280 11889.99 2171 2124 406.0
B 3 64 1706151 4197.27 2171 2124 406.0
B 0 85 735450 1806.29 2171 2124 406.0
C 3 248 40603 74.42 2350 2330 514.3
C 8 222 23980 42.1 2350 2330 514.3
C 14 234 14814 24.27 2350 2330 514.3
D 1 52 2171594 4008.33 2350 2274 541.2
D 8 195 953751 1758.08 2350 2274 541.2
D 2 234 169067 308.19 2350 2274 541.2

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