ASTROSAT CZTI

Data Quality Report

Orbit 40034

Creation date: 2024-06-27T22:11:30.927096
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_054T03_9000005516_40034cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_40034cztM0_level2_quad_clean.evt
Size (bytes)1,000,365,120249,926,400
Size954.0 MB 238.3 MB
Events in quadrant A8,395,6491,669,579
Events in quadrant B6,935,8581,720,068
Events in quadrant C10,386,3861,617,488
Events in quadrant D10,107,4571,486,103

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0345013
B0315602
C0409932
D0411662

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15565760.488275%
B15565240.154192%
C155653802.441375%
D155655333.424350%

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 19653 15568 60 60 0.31% 0.39%
B 19653 15568 4 4 0.02% 0.03%
C 19653 15568 377 377 1.92% 2.42%
D 19653 15568 459 459 2.34% 2.95%

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 1162308 3389.13 1687 1653 342.5
A 6 10 419417 1219.88 1687 1653 342.5
A 7 3 98344 282.34 1687 1653 342.5
B 4 171 76532 231.14 1687 1642 324.0
B 0 189 51179 152.89 1687 1642 324.0
B 12 111 41556 123.19 1687 1642 324.0
C 9 187 2931355 7680.67 1646 1656 381.4
C 15 214 676834 1770.09 1646 1656 381.4
C 14 254 173424 450.32 1646 1656 381.4
D 1 47 1635185 4060.49 1635 1592 402.3
D 12 227 1452298 3605.9 1635 1592 402.3
D 2 250 316544 782.85 1635 1592 402.3

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