ASTROSAT CZTI

Data Quality Report

Orbit 20190519_A05_212T08_9000002934_level2

Creation date: 2019-05-20T12:58:00.920467
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_212T08_9000002934cztM0_level2_bc.evt modeM0/AS1A05_212T08_9000002934cztM0_level2_quad_clean.evt
Size (bytes)329,754,240113,123,520
Size314.5 MB 107.9 MB
Events in quadrant A1,937,222711,804
Events in quadrant B2,876,474713,827
Events in quadrant C1,973,797680,851
Events in quadrant D2,556,142672,823

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0194540
B0230650
C0194270
D0214960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01920
B01920
C01920
D01920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A93161241.331043%
B93164604.937742%
C93161661.781881%
D93161962.103907%

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 10756 9315 4 4 0.04% 0.04%
B 10756 9313 32 32 0.30% 0.34%
C 10756 9314 0 0 0.00% 0.00%
D 10756 9314 9 9 0.08% 0.10%

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 5 16 75857 712.64 474 463 105.8
A 11 29 26384 245.01 474 463 105.8
A 9 143 8453 75.52 474 463 105.8
B 3 112 890744 9620.35 469 455 92.5
B 0 230 89707 964.45 469 455 92.5
B 4 216 28252 300.37 469 455 92.5
C 8 208 99510 911.38 454 449 108.7
C 3 233 80364 735.23 454 449 108.7
C 7 247 18289 164.13 454 449 108.7
D 1 52 445853 4066.7 463 443 109.5
D 12 218 280327 2555.41 463 443 109.5
D 2 234 37192 335.53 463 443 109.5

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