ASTROSAT CZTI

Data Quality Report

Orbit 53400

Creation date: 2025-08-12T04:28:14.719042
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/AS1C09_011T09_9000006494_53400cztM0_level2.fits modeM0/AS1C09_011T09_9000006494_53400cztM0_level2_quad_clean.evt
Size (bytes)765,460,80089,409,600
Size730.0 MB 85.3 MB
Events in quadrant A4,082,696641,174
Events in quadrant B6,762,348630,695
Events in quadrant C11,564,560385,685
Events in quadrant D5,398,513574,634

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170542
B0249292
C0390782
D0207402

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68052884.232182%
B6805101314.886113%
C6805304344.717120%
D68053915.745775%

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 7635 6806 192 192 2.51% 2.82%
B 7635 6805 613 613 8.03% 9.01%
C 7634 6804 2607 2607 34.15% 38.32%
D 7635 6806 311 311 4.07% 4.57%

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 15 174 595594 3464.45 699 682 171.7
A 7 191 272750 1584.38 699 682 171.7
A 5 241 83524 482.43 699 682 171.7
B 4 171 1189536 8314.2 678 654 143.0
B 2 249 1043173 7290.64 678 654 143.0
B 10 254 353315 2466.26 678 654 143.0
C 15 224 3551891 23183.53 556 552 153.2
C 14 80 2331178 15214.58 556 552 153.2
C 1 241 1468928 9585.72 556 552 153.2
D 0 18 946001 4861.64 686 654 194.5
D 2 172 449847 2310.07 686 654 194.5
D 2 153 262360 1345.88 686 654 194.5

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