ASTROSAT CZTI

Data Quality Report

Orbit 26550

Creation date: 2024-06-27T19:30:19.898322
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/AS1A09_095T02_9000003840_26550cztM0_level2.evt modeM0/AS1A09_095T02_9000003840_26550cztM0_level2_quad_clean.evt
Size (bytes)516,896,640114,183,360
Size493.0 MB 108.9 MB
Events in quadrant A3,381,092758,971
Events in quadrant B3,590,167767,512
Events in quadrant C3,305,897735,364
Events in quadrant D4,914,375721,136

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143860
B0150000
C0140470
D0192010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6820560.821114%
B68201211.774194%
C6821620.908958%
D68203174.648094%

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 7495 6821 4 4 0.05% 0.06%
B 7495 6821 19 19 0.25% 0.28%
C 7496 6822 1 1 0.01% 0.01%
D 7495 6821 215 215 2.87% 3.15%

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 144570 872.23 830 815 164.8
A 5 168 36514 216.6 830 815 164.8
A 13 254 11120 62.53 830 815 164.8
B 3 64 192353 1235.34 823 803 155.1
B 5 172 134196 860.28 823 803 155.1
B 3 112 30637 192.41 823 803 155.1
C 14 238 130606 706.36 792 797 183.8
C 3 233 80648 434.51 792 797 183.8
C 13 61 5494 25.56 792 797 183.8
D 1 52 1452568 7671.62 788 768 189.2
D 2 250 197871 1041.53 788 768 189.2
D 7 80 126349 663.6 788 768 189.2

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