ASTROSAT CZTI

Data Quality Report

Orbit 26267

Creation date: 2024-06-27T19:26:48.611824
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_079T03_9000003790_26267cztM0_level2.evt modeM0/AS1A09_079T03_9000003790_26267cztM0_level2_quad_clean.evt
Size (bytes)505,805,76084,657,600
Size482.4 MB 80.7 MB
Events in quadrant A3,494,098526,852
Events in quadrant B3,512,381537,769
Events in quadrant C4,403,091514,498
Events in quadrant D3,453,865517,345

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148780
B0148510
C0176270
D0148500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67011091.626623%
B67011041.552007%
C67014526.745262%
D67011041.552007%

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 8641 6703 17 17 0.20% 0.25%
B 8641 6703 11 11 0.13% 0.16%
C 8641 6703 162 162 1.87% 2.42%
D 8641 6703 24 24 0.28% 0.36%

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 175917 1022.55 852 835 171.2
A 13 248 28119 159.35 852 835 171.2
A 13 254 11048 59.65 852 835 171.2
B 5 172 151512 932.41 856 836 161.6
B 12 111 18970 112.22 856 836 161.6
B 11 111 16493 96.89 856 836 161.6
C 4 254 923645 4853.4 816 822 190.1
C 3 233 139669 730.24 816 822 190.1
C 14 238 129600 677.28 816 822 190.1
D 12 233 157427 779.94 839 820 200.8
D 1 52 47279 231.38 839 820 200.8
D 13 168 32878 159.66 839 820 200.8

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