ASTROSAT CZTI

Data Quality Report

Orbit 40085

Creation date: 2024-06-27T22:12:10.156528
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/AS1T05_086T01_9000005518_40085cztM0_level2.fits modeM0/AS1T05_086T01_9000005518_40085cztM0_level2_quad_clean.evt
Size (bytes)382,740,48094,285,440
Size365.0 MB 89.9 MB
Events in quadrant A2,869,441653,456
Events in quadrant B2,628,390680,535
Events in quadrant C3,979,919620,906
Events in quadrant D4,286,965537,356

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115523
B0109902
C0150532
D0163812

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5180470.907336%
B5180120.231660%
C51802725.250965%
D518055010.617761%

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 7301 5181 27 27 0.37% 0.52%
B 7301 5181 6 6 0.08% 0.12%
C 7301 5181 279 279 3.82% 5.39%
D 7301 5181 476 476 6.52% 9.19%

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 449964 3735.2 592 582 120.3
A 13 248 87146 719.51 592 582 120.3
A 9 191 10564 82.97 592 582 120.3
B 0 189 223794 1961.87 594 580 113.8
B 0 230 38849 336.35 594 580 113.8
B 5 63 29811 256.92 594 580 113.8
C 9 187 1315679 9902.92 570 578 132.8
C 15 214 214756 1612.79 570 578 132.8
C 0 10 182174 1367.45 570 578 132.8
D 12 0 674688 4985.12 544 529 135.2
D 13 249 608401 4494.96 544 529 135.2
D 1 47 417050 3080.0 544 529 135.2

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