ASTROSAT CZTI

Data Quality Report

Orbit 09271

Creation date: 2024-06-27T15:43:41.628970
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/AS1A03_091T06_9000001302_09271cztM0_level2.evt modeM0/AS1A03_091T06_9000001302_09271cztM0_level2_quad_clean.evt
Size (bytes)523,543,68087,004,800
Size499.3 MB 83.0 MB
Events in quadrant A4,603,407527,610
Events in quadrant B3,524,839554,411
Events in quadrant C3,171,666555,647
Events in quadrant D4,081,746511,488

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017638
B017525
C017434
D017626

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0241835859
B0186983722
C0176603230
D0208883921

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B051
C050
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67772403.541390%
B69941402.001716%
C7061921.302932%
D69383575.145575%

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 9231 7520 55 55 0.60% 0.73%
B 9231 7707 4 4 0.04% 0.05%
C 9231 7751 0 0 0.00% 0.00%
D 9231 7667 213 213 2.31% 2.78%

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 8 5 1084420 6660.52 794 776 162.7
A 5 16 328768 2015.97 794 776 162.7
A 4 2 33322 200.04 794 776 162.7
B 0 214 116869 718.6 828 806 161.5
B 8 234 70039 428.66 828 806 161.5
B 0 245 26450 158.77 828 806 161.5
C 13 61 6120 27.75 811 814 191.2
C 8 222 5881 26.5 811 814 191.2
C 3 202 2018 6.3 811 814 191.2
D 10 199 455431 2158.86 780 763 210.6
D 12 233 293881 1391.78 780 763 210.6
D 2 136 117581 554.67 780 763 210.6

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