ASTROSAT CZTI

Data Quality Report

Orbit 03462

Creation date: 2024-06-27T14:29:22.798391
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/AS1G05_209T01_9000000458_03462cztM0_level2.evt modeM0/AS1G05_209T01_9000000458_03462cztM0_level2_quad_clean.evt
Size (bytes)469,166,400110,269,440
Size447.4 MB 105.2 MB
Events in quadrant A3,235,221711,066
Events in quadrant B3,647,800710,215
Events in quadrant C3,594,249728,314
Events in quadrant D3,254,803701,525

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148503
B0158762
C0160892
D0149532

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7016540.769669%
B7016480.684151%
C7016871.240023%
D7016450.641391%

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 7711 7017 30 30 0.39% 0.43%
B 7711 7017 9 9 0.12% 0.13%
C 7711 7017 127 127 1.65% 1.81%
D 7711 7017 32 32 0.41% 0.46%

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 0 118 185212 1190.35 757 739 155.0
A 0 50 65107 415.35 757 739 155.0
A 8 15 43058 273.07 757 739 155.0
B 15 204 515168 3493.67 772 753 147.2
B 4 81 38856 258.78 772 753 147.2
B 0 219 37947 252.6 772 753 147.2
C 10 19 344813 1997.27 750 751 172.3
C 14 223 162121 936.75 750 751 172.3
C 1 192 115975 668.87 750 751 172.3
D 2 37 122764 688.59 740 716 177.2
D 5 233 91573 512.61 740 716 177.2
D 13 223 79522 444.62 740 716 177.2

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