ASTROSAT CZTI

Data Quality Report

Orbit 40131

Creation date: 2024-06-27T22:12:42.163819
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/AS1A12_004T01_9000005520_40131cztM0_level2.fits modeM0/AS1A12_004T01_9000005520_40131cztM0_level2_quad_clean.evt
Size (bytes)937,077,120149,941,440
Size893.7 MB 143.0 MB
Events in quadrant A5,201,3401,089,213
Events in quadrant B4,640,6281,130,708
Events in quadrant C16,985,600672,861
Events in quadrant D7,078,460947,959

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216664
B0211773
C0574643
D0283143

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02040
B02040
C02040
D02040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10091380.376573%
B10091800.792786%
C10091434443.048261%
D100915795.737786%

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 13649 10093 31 31 0.23% 0.31%
B 13649 10093 68 68 0.50% 0.67%
C 13648 10090 4449 4449 32.60% 44.09%
D 13649 10093 577 577 4.23% 5.72%

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 10 83 790784 3576.63 1084 1065 220.8
A 15 223 138159 620.9 1084 1065 220.8
A 2 79 55358 245.89 1084 1065 220.8
B 5 255 300855 1449.03 1078 1048 206.9
B 0 218 45150 213.15 1078 1048 206.9
B 4 171 29954 139.71 1078 1048 206.9
C 9 187 13197452 67704.66 841 847 194.9
C 15 214 341352 1746.95 841 847 194.9
C 14 254 129954 662.38 841 847 194.9
D 2 249 868381 3462.64 1031 1002 250.5
D 12 227 782931 3121.52 1031 1002 250.5
D 1 47 610093 2431.54 1031 1002 250.5

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