ASTROSAT CZTI

Data Quality Report

Orbit 20181031_A05_059T04_9000002476_level2

Creation date: 2018-11-01T12:24:49.006315
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_059T04_9000002476cztM0_level2_bc.evt modeM0/AS1A05_059T04_9000002476cztM0_level2_quad_clean.evt
Size (bytes)411,163,200178,128,000
Size392.1 MB 169.9 MB
Events in quadrant A3,355,7811,199,194
Events in quadrant B2,452,7821,239,195
Events in quadrant C3,205,2691,167,517
Events in quadrant D2,812,3201,158,508

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0248700
B0206890
C0240870
D0214290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01860
B01860
C01860
D01860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A90925415.950286%
B90921601.759789%
C90922422.661681%
D90921381.517818%

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 11383 9093 12 12 0.11% 0.13%
B 11383 9093 3 3 0.03% 0.03%
C 11383 9093 13 13 0.11% 0.14%
D 11383 9093 6 6 0.05% 0.07%

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 1389914 12855.45 482 474 108.1
A 10 234 96566 889.07 482 474 108.1
A 9 143 13704 122.41 482 474 108.1
B 15 35 137582 1436.03 495 484 95.5
B 3 209 97988 1021.3 495 484 95.5
B 0 229 90777 945.77 495 484 95.5
C 3 233 1099745 9849.97 466 464 111.6
C 0 207 247054 2209.54 466 464 111.6
C 7 247 67438 600.11 466 464 111.6
D 1 52 583275 5128.81 479 463 113.6
D 10 70 190330 1670.85 479 463 113.6
D 11 176 76252 666.95 479 463 113.6

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