ASTROSAT CZTI

Data Quality Report

Orbit 39295

Creation date: 2024-06-27T22:02:51.234536
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/AS1A12_042T01_9000005462_39295cztM0_level2.fits modeM0/AS1A12_042T01_9000005462_39295cztM0_level2_quad_clean.evt
Size (bytes)812,856,96098,087,040
Size775.2 MB 93.5 MB
Events in quadrant A3,749,914816,909
Events in quadrant B4,162,080793,741
Events in quadrant C3,372,864784,681
Events in quadrant D18,236,62866,233

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158602
B0176301
C0147131
D0592321

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7301210.287632%
B73013264.465142%
C730160.082181%
D7301674092.316121%

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 8614 7302 7 7 0.08% 0.10%
B 8614 7302 177 177 2.05% 2.42%
C 8614 7302 1 1 0.01% 0.01%
D 8614 7301 5892 5892 68.40% 80.70%

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 499029 3090.48 792 773 161.2
A 13 248 156445 965.57 792 773 161.2
A 15 222 31584 191.11 792 773 161.2
B 5 172 904264 6141.5 770 748 147.1
B 5 255 165381 1119.06 770 748 147.1
B 0 213 27999 185.23 770 748 147.1
C 15 214 302866 1673.05 777 780 180.6
C 9 187 28065 151.11 777 780 180.6
C 6 255 7474 37.07 777 780 180.6
D 12 235 15624026 189176.65 330 320 82.6
D 12 227 579433 7012.08 330 320 82.6
D 12 233 412129 4986.31 330 320 82.6

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