ASTROSAT CZTI

Data Quality Report

Orbit 09828

Creation date: 2024-06-27T15:51:06.328235
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/AS1G07_020T01_9000001398_09828cztM0_level2.evt modeM0/AS1G07_020T01_9000001398_09828cztM0_level2_quad_clean.evt
Size (bytes)482,906,88078,338,880
Size460.5 MB 74.7 MB
Events in quadrant A3,054,498484,632
Events in quadrant B3,280,840503,977
Events in quadrant C3,037,037493,677
Events in quadrant D4,820,172445,466

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131583
B0137442
C0130682
D0185052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6365270.424195%
B6365510.801257%
C6365130.204242%
D63653355.263158%

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 7720 6366 3 3 0.04% 0.05%
B 7720 6366 10 10 0.13% 0.16%
C 7720 6366 0 0 0.00% 0.00%
D 7720 6366 264 264 3.42% 4.15%

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 15 174 12785 76.02 784 768 158.1
A 14 254 11283 66.52 784 768 158.1
A 3 1 7494 42.55 784 768 158.1
B 0 214 68271 447.44 802 785 150.8
B 0 230 25906 166.56 802 785 150.8
B 4 239 22229 142.18 802 785 150.8
C 5 128 10422 54.47 773 779 177.0
C 13 61 5909 28.98 773 779 177.0
C 10 22 4822 22.84 773 779 177.0
D 1 52 1256723 6976.9 738 721 180.0
D 2 152 277941 1539.91 738 721 180.0
D 7 46 273767 1516.73 738 721 180.0

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