ASTROSAT CZTI

Data Quality Report

Orbit 20190626_T03_123T01_9000003000_level2

Creation date: 2019-06-28T15:35:13.029260
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_123T01_9000003000cztM0_level2_bc.evt modeM0/AS1T03_123T01_9000003000cztM0_level2_quad_clean.evt
Size (bytes)3,099,159,3601,093,345,920
Size2.9 GB 1.0 GB
Events in quadrant A18,762,6256,984,772
Events in quadrant B19,543,7247,075,180
Events in quadrant C18,086,6476,644,681
Events in quadrant D31,620,3946,531,102

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01490
B01490
C01490
D01490

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017480
B017480
C017480
D017480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01793150
B01821510
C01796770
D02203760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8579511201.305437%
B8579513671.593333%
C8579515861.848593%
D8579532073.737980%

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 100640 85797 25 25 0.02% 0.03%
B 100640 85798 1 1 0.00% 0.00%
C 100640 85798 5 5 0.00% 0.01%
D 100640 85795 1010 1010 1.00% 1.18%

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 4 2 257214 246.67 4750 4668 1023.8
A 10 253 120540 113.18 4750 4668 1023.8
A 13 254 66422 60.32 4750 4668 1023.8
B 10 245 832464 928.33 4779 4671 891.7
B 0 230 156709 170.5 4779 4671 891.7
B 0 214 140152 151.94 4779 4671 891.7
C 3 233 349066 330.35 4501 4482 1043.1
C 9 54 309506 292.42 4501 4482 1043.1
C 3 9 51812 45.37 4501 4482 1043.1
D 1 52 9629445 9130.2 4603 4452 1054.2
D 7 238 2799169 2651.05 4603 4452 1054.2
D 11 176 697747 657.65 4603 4452 1054.2

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