ASTROSAT CZTI

Data Quality Report

Orbit 20190115_T03_061T01_9000002654_level2

Creation date: 2019-01-16T13:13:56.492492
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/AS1T03_061T01_9000002654cztM0_level2_bc.evt modeM0/AS1T03_061T01_9000002654cztM0_level2_quad_clean.evt
Size (bytes)908,300,160362,923,200
Size866.2 MB 346.1 MB
Events in quadrant A5,376,4082,311,297
Events in quadrant B6,232,8722,301,855
Events in quadrant C5,613,5242,251,904
Events in quadrant D8,361,1172,194,031

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05720
B05720
C05720
D05720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580650
B0617770
C0582950
D0704350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A281155481.949137%
B2811510303.663525%
C281156942.468433%
D2811515555.530855%

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 30000 28115 1 1 0.00% 0.00%
B 30000 28112 1 1 0.00% 0.00%
C 30000 28117 0 0 0.00% 0.00%
D 30000 28114 47 47 0.16% 0.17%

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 15 174 84411 270.33 1380 1348 307.3
A 12 194 8808 24.28 1380 1348 307.3
A 0 226 8716 23.98 1380 1348 307.3
B 15 222 756504 2877.72 1379 1340 262.4
B 15 33 88396 331.75 1379 1340 262.4
B 4 80 30359 110.58 1379 1340 262.4
C 13 62 288119 904.23 1343 1324 317.2
C 5 218 72611 224.76 1343 1324 317.2
C 9 54 30534 92.1 1343 1324 317.2
D 7 238 2836741 9044.6 1343 1291 313.5
D 10 70 140894 445.31 1343 1291 313.5
D 2 234 116402 367.18 1343 1291 313.5

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