ASTROSAT CZTI

Data Quality Report

Orbit 18240

Creation date: 2024-06-27T17:47:15.749427
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/AS1A05_019T01_9000002718_18240cztM0_level2.evt modeM0/AS1A05_019T01_9000002718_18240cztM0_level2_quad_clean.evt
Size (bytes)432,204,48097,801,920
Size412.2 MB 93.3 MB
Events in quadrant A3,215,037649,493
Events in quadrant B3,046,973658,032
Events in quadrant C2,916,083618,386
Events in quadrant D3,496,726610,435

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134011
B0127611
C0125241
D0143361

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60952053.363413%
B60961021.673228%
C6096911.492782%
D60961863.051181%

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 7035 6096 37 37 0.53% 0.61%
B 7036 6097 6 6 0.09% 0.10%
C 7036 6097 0 0 0.00% 0.00%
D 7036 6097 89 89 1.26% 1.46%

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 15 174 284034 1852.85 757 742 152.9
A 4 2 9980 60.42 757 742 152.9
A 0 226 6602 38.33 757 742 152.9
B 0 198 25568 174.25 750 732 142.5
B 0 197 24734 168.4 750 732 142.5
B 7 220 22593 153.38 750 732 142.5
C 14 238 111011 657.57 715 720 167.7
C 4 223 9818 54.24 715 720 167.7
C 3 233 7939 43.04 715 720 167.7
D 1 52 550800 3058.68 731 709 179.8
D 10 70 67626 372.08 731 709 179.8
D 7 238 46614 255.25 731 709 179.8

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