ASTROSAT CZTI

Data Quality Report

Orbit 20190607_A05_103T05_9000002974_level2

Creation date: 2019-06-11T14:39:10.649220
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/AS1A05_103T05_9000002974cztM0_level2_bc.evt modeM0/AS1A05_103T05_9000002974cztM0_level2_quad_clean.evt
Size (bytes)1,311,160,320410,221,440
Size1.2 GB 391.2 MB
Events in quadrant A13,797,3142,153,907
Events in quadrant B6,999,6542,835,930
Events in quadrant C8,176,3412,691,146
Events in quadrant D8,585,0682,582,157

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06380
B06380
C06380
D06380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01228270
B0669230
C0708970
D0721800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A31410940129.929959%
B314103491.111111%
C314105191.652340%
D3141010393.307864%

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 34449 31270 29 29 0.08% 0.09%
B 34450 31407 4 4 0.01% 0.01%
C 34450 31407 9 9 0.03% 0.03%
D 34450 31407 409 409 1.19% 1.30%

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 14 238 8748604 30868.97 1285 1260 283.4
A 14 254 60516 209.11 1285 1260 283.4
A 11 29 27334 92.01 1285 1260 283.4
B 7 220 309644 981.1 1623 1581 314.0
B 0 197 101109 316.97 1623 1581 314.0
B 0 190 56940 176.3 1623 1581 314.0
C 3 233 906444 2434.37 1548 1537 371.7
C 9 221 790787 2123.23 1548 1537 371.7
C 10 222 354679 950.02 1548 1537 371.7
D 7 238 942879 2588.85 1556 1504 363.6
D 1 20 812399 2230.02 1556 1504 363.6
D 12 218 344691 943.79 1556 1504 363.6

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