ASTROSAT CZTI

Data Quality Report

Orbit 20200120_A07_148T05_9000003446_level2

Creation date: 2020-01-22T11:17:46.382732
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/AS1A07_148T05_9000003446cztM0_level2_bc.evt modeM0/AS1A07_148T05_9000003446cztM0_level2_quad_clean.evt
Size (bytes)3,233,476,800872,830,080
Size3.0 GB 832.4 MB
Events in quadrant A15,994,6465,611,248
Events in quadrant B14,989,5485,687,691
Events in quadrant C17,896,9145,443,646
Events in quadrant D44,452,2725,066,152

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01466200
B01432620
C01546830
D02416840

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013720
B013720
C013720
D013720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01070
B01070
C01070
D01070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A674759461.402001%
B674758881.316043%
C6747516262.409781%
D674751151717.068544%

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 82060 67472 155 155 0.19% 0.23%
B 82060 67468 20 20 0.02% 0.03%
C 82060 67469 126 126 0.15% 0.19%
D 82060 67470 6062 6062 7.39% 8.98%

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 6 16 1561256 1931.97 3731 3663 806.2
A 13 254 99298 118.62 3731 3663 806.2
A 2 79 45138 51.44 3731 3663 806.2
B 0 229 220227 310.78 3743 3659 696.9
B 0 190 116836 162.41 3743 3659 696.9
B 4 216 108035 149.78 3743 3659 696.9
C 10 9 3292309 3926.75 3587 3572 837.5
C 7 247 327747 387.06 3587 3572 837.5
C 0 207 269567 317.6 3587 3572 837.5
D 7 223 19469360 24544.38 3429 3315 793.1
D 1 52 8844877 11148.17 3429 3315 793.1
D 7 238 1513942 1904.72 3429 3315 793.1

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