ASTROSAT CZTI

Data Quality Report

Orbit 26866

Creation date: 2024-06-27T19:33:50.690958
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/AS1T03_224T01_9000003872_26866cztM0_level2.evt modeM0/AS1T03_224T01_9000003872_26866cztM0_level2_quad_clean.evt
Size (bytes)422,570,88060,310,080
Size403.0 MB 57.5 MB
Events in quadrant A3,103,049375,574
Events in quadrant B2,802,962390,212
Events in quadrant C2,604,860371,698
Events in quadrant D3,949,682340,327

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122020
B0111850
C0105600
D0149000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49651322.658610%
B4965611.228600%
C4965881.772407%
D49643597.232071%

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 6355 4965 57 57 0.90% 1.15%
B 6355 4966 10 10 0.16% 0.20%
C 6355 4966 0 0 0.00% 0.00%
D 6354 4964 285 285 4.49% 5.74%

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 529964 4009.56 662 650 132.0
A 12 96 22482 165.38 662 650 132.0
A 13 254 8124 56.62 662 650 132.0
B 0 190 123500 975.38 666 650 126.0
B 10 246 43452 339.83 666 650 126.0
B 0 189 20261 155.7 666 650 126.0
C 14 238 105067 705.63 640 645 148.0
C 13 61 4547 26.37 640 645 148.0
C 15 208 2703 13.91 640 645 148.0
D 7 80 1326563 9100.14 625 611 145.7
D 1 52 104468 712.78 625 611 145.7
D 12 227 65616 446.14 625 611 145.7

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