ASTROSAT CZTI

Data Quality Report

Orbit 08816

Creation date: 2024-06-27T15:37:36.803850
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_135T01_9000001226_08816cztM0_level2.evt modeM0/AS1A03_135T01_9000001226_08816cztM0_level2_quad_clean.evt
Size (bytes)444,836,16092,594,880
Size424.2 MB 88.3 MB
Events in quadrant A3,185,612608,658
Events in quadrant B3,454,448600,063
Events in quadrant C2,905,405585,999
Events in quadrant D3,503,119575,035

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01324
B01320
C01326
D013210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014119672
B014916652
C013568742
D015215663

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112
B0112
C0112
D0115

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6226801.284934%
B62251402.248996%
C6194430.694220%
D6236921.475305%

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 7580 6376 4 4 0.05% 0.06%
B 7580 6360 68 68 0.90% 1.07%
C 7580 6371 0 0 0.00% 0.00%
D 7580 6384 37 37 0.49% 0.58%

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 121143 758.73 781 766 158.7
A 5 16 25712 157.23 781 766 158.7
A 15 174 17891 107.94 781 766 158.7
B 10 16 364322 2462.48 769 752 147.6
B 0 214 64794 433.76 769 752 147.6
B 4 80 22821 149.47 769 752 147.6
C 8 128 10763 58.51 737 743 171.3
C 8 112 5833 29.72 737 743 171.3
C 13 61 5620 28.48 737 743 171.3
D 5 233 188396 952.82 745 727 197.0
D 2 152 169459 856.68 745 727 197.0
D 7 71 137226 693.03 745 727 197.0

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