ASTROSAT CZTI

Data Quality Report

Orbit 20200918_T03_232T01_9000003886_level2

Creation date: 2021-01-08T06:43:35.795692
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_232T01_9000003886cztM0_level2_bc.evt modeM0/AS1T03_232T01_9000003886cztM0_level2_quad_clean.evt
Size (bytes)466,436,160183,332,160
Size444.8 MB 174.8 MB
Events in quadrant A3,883,8871,220,475
Events in quadrant B2,467,0541,259,531
Events in quadrant C1,952,4121,228,109
Events in quadrant D5,145,7861,162,112

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02000
B02000
C02000
D02000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0263390
B0220390
C0202710
D0312570

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A98423383.434261%
B98422212.245479%
C98421741.767933%
D98427467.579760%

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 10152 9842 34 34 0.33% 0.35%
B 10152 9840 4 4 0.04% 0.04%
C 10152 9843 0 0 0.00% 0.00%
D 10152 9841 164 164 1.62% 1.67%

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 0 13 1750355 15737.24 493 482 111.2
A 6 16 134190 1202.48 493 482 111.2
A 5 168 91452 818.13 493 482 111.2
B 0 190 194720 1979.29 501 490 98.1
B 3 64 164708 1673.46 501 490 98.1
B 15 33 101399 1028.31 501 490 98.1
C 15 208 46448 387.52 487 485 118.6
C 8 128 15415 125.88 487 485 118.6
C 8 112 8480 67.41 487 485 118.6
D 1 52 2109279 17277.73 477 463 122.1
D 7 80 460869 3772.15 477 463 122.1
D 11 176 447558 3663.09 477 463 122.1

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