ASTROSAT CZTI

Data Quality Report

Orbit 34436

Creation date: 2022-02-09T20:53:31.756320
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A10_058T05_9000004918_34436cztM0_level2.evt modeM0/AS1A10_058T05_9000004918_34436cztM0_level2_quad_clean.evt
Size (bytes)633,389,76057,326,400
Size604.0 MB 54.7 MB
Events in quadrant A2,883,901367,724
Events in quadrant B4,569,204364,073
Events in quadrant C3,095,223357,637
Events in quadrant D8,280,212279,353

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118233
B0171882
C0123882
D0282892

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5232380.726300%
B523261311.716361%
C5232571.089450%
D5232198237.882263%

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 7296 5233 24 24 0.33% 0.46%
B 7296 5233 457 457 6.26% 8.73%
C 7296 5233 34 34 0.47% 0.65%
D 7296 5233 1682 1682 23.05% 32.14%

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 9 143 67483 469.7 716 704 142.2
A 10 83 38254 264.11 716 704 142.2
A 13 6 13517 90.12 716 704 142.2
B 5 172 1459790 11840.86 668 654 123.2
B 0 190 339081 2746.33 668 654 123.2
B 3 112 59181 474.95 668 654 123.2
C 15 214 220349 1414.74 681 688 155.3
C 0 10 149108 955.91 681 688 155.3
C 14 67 37870 239.47 681 688 155.3
D 10 118 3380194 23670.08 584 567 142.8
D 7 223 1171623 8201.79 584 567 142.8
D 8 195 927316 6490.72 584 567 142.8

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