ASTROSAT CZTI

Data Quality Report

Orbit 20180212_A04_048T01_9000001890_level2

Creation date: 2018-08-01T11:09:30.526353
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_048T01_9000001890cztM0_level2_bc.evt modeM0/AS1A04_048T01_9000001890cztM0_level2_quad_clean.evt
Size (bytes)2,523,193,920763,153,920
Size2.3 GB 727.8 MB
Events in quadrant A13,915,6314,823,133
Events in quadrant B25,556,7624,568,781
Events in quadrant C12,706,3724,837,303
Events in quadrant D19,951,0784,573,375

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012780
B012780
C012780
D012780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01333410
B01894540
C01291000
D01524530

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A628547341.167786%
B62854764012.155153%
C628543680.585484%
D6285425454.049066%

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 71635 62857 3 3 0.00% 0.00%
B 71635 62841 330 330 0.46% 0.53%
C 71635 62855 2 2 0.00% 0.00%
D 71635 62856 1234 1234 1.72% 1.96%

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 1013839 1430.54 3263 3199 706.5
A 8 15 105283 144.5 3263 3199 706.5
A 15 222 94694 129.51 3263 3199 706.5
B 4 239 8214230 14211.85 3078 3002 577.8
B 0 85 2390172 4131.67 3078 3002 577.8
B 3 64 934301 1611.88 3078 3002 577.8
C 14 234 69023 92.76 3231 3190 709.7
C 13 61 19151 22.49 3231 3190 709.7
C 4 112 11387 11.55 3231 3190 709.7
D 1 52 6307971 8686.69 3187 3084 725.8
D 10 157 500834 685.79 3187 3084 725.8
D 4 95 482522 660.56 3187 3084 725.8

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