ASTROSAT CZTI

Data Quality Report

Orbit 08959

Creation date: 2024-06-27T15:39:26.102129
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_051T01_9000001242_08959cztM0_level2.evt modeM0/AS1A03_051T01_9000001242_08959cztM0_level2_quad_clean.evt
Size (bytes)486,547,20074,361,600
Size464.0 MB 70.9 MB
Events in quadrant A4,013,004450,590
Events in quadrant B3,333,880466,363
Events in quadrant C3,229,822457,641
Events in quadrant D3,734,515441,090

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158445
B01358616
C01352014
D0146678

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62432323.716162%
B62381071.715293%
C62381171.875601%
D62411312.099023%

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 7549 6245 103 103 1.36% 1.65%
B 7549 6245 3 3 0.04% 0.05%
C 7549 6245 23 23 0.30% 0.37%
D 7549 6245 50 50 0.66% 0.80%

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 454646 2791.75 810 796 162.6
A 5 16 423330 2599.12 810 796 162.6
A 13 164 10253 58.17 810 796 162.6
B 4 173 114158 738.96 819 800 153.4
B 0 214 20934 131.25 819 800 153.4
B 12 111 16004 99.11 819 800 153.4
C 4 254 137608 758.12 792 798 180.5
C 13 61 6020 28.94 792 798 180.5
C 12 4 2966 12.01 792 798 180.5
D 13 104 303204 1522.46 792 769 198.6
D 8 195 258239 1296.1 792 769 198.6
D 7 71 44455 219.92 792 769 198.6

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