ASTROSAT CZTI

Data Quality Report

Orbit 19173

Creation date: 2024-06-27T17:59:45.268970
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/AS1A05_046T01_9000002838_19173cztM0_level2.evt modeM0/AS1A05_046T01_9000002838_19173cztM0_level2_quad_clean.evt
Size (bytes)2,426,267,520317,505,600
Size2.3 GB 302.8 MB
Events in quadrant A13,378,8621,976,741
Events in quadrant B14,586,7052,021,348
Events in quadrant C17,997,3511,952,788
Events in quadrant D25,598,3001,707,549

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0581964
B0614074
C0716884
D09511613

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05800
B05800
C05800
D05800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A284374691.649260%
B284386712.359519%
C2843711373.998312%
D28436521218.328879%

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 38712 28443 0 0 0.00% 0.00%
B 38713 28444 99 99 0.26% 0.35%
C 38712 28444 200 200 0.52% 0.70%
D 38712 28442 4256 4256 10.99% 14.96%

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 11 47 89431 124.08 3430 3352 693.7
A 11 29 61928 84.43 3430 3352 693.7
A 13 254 38160 50.17 3430 3352 693.7
B 7 220 368153 558.66 3421 3328 653.0
B 3 112 166049 249.17 3421 3328 653.0
B 10 245 165477 248.3 3421 3328 653.0
C 3 233 4630660 6030.86 3294 3316 767.3
C 14 238 509379 659.56 3294 3316 767.3
C 13 61 23083 25.76 3294 3316 767.3
D 10 66 11073967 14900.09 3093 3010 743.0
D 11 176 1654986 2223.35 3093 3010 743.0
D 1 52 879622 1179.81 3093 3010 743.0

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