ASTROSAT CZTI

Data Quality Report

Orbit 45761

Creation date: 2024-06-27T23:15:51.973926
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_183T01_9000006124_45761cztM0_level2.fits modeM0/AS1T05_183T01_9000006124_45761cztM0_level2_quad_clean.evt
Size (bytes)618,540,480102,441,600
Size589.9 MB 97.7 MB
Events in quadrant A6,282,939696,528
Events in quadrant B7,355,122638,192
Events in quadrant C3,762,724692,461
Events in quadrant D4,989,323618,027

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227071
B0265002
C0156981
D0192401

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65393104.740786%
B6539126219.299587%
C65392764.220829%
D65394166.361829%

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 7514 6540 127 127 1.69% 1.94%
B 7514 6540 759 759 10.10% 11.61%
C 7514 6540 171 171 2.28% 2.61%
D 7514 6540 295 295 3.93% 4.51%

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 2828045 18221.57 745 730 155.2
A 13 248 524026 3372.55 745 730 155.2
A 14 235 23159 144.55 745 730 155.2
B 3 112 2330972 16871.08 703 684 138.1
B 0 189 914462 6615.67 703 684 138.1
B 12 18 573458 4146.83 703 684 138.1
C 14 254 833114 4785.38 736 739 173.9
C 14 220 35102 197.56 736 739 173.9
C 3 233 12799 69.33 736 739 173.9
D 1 52 746698 4121.96 718 698 181.0
D 7 38 407301 2246.65 718 698 181.0
D 13 249 321792 1774.18 718 698 181.0

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