ASTROSAT CZTI

Data Quality Report

Orbit 33914

Creation date: 2024-06-27T20:54:07.231918
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/AS1T04_091T01_9000004842_33914cztM0_level2.evt modeM0/AS1T04_091T01_9000004842_33914cztM0_level2_quad_clean.evt
Size (bytes)509,221,44065,430,720
Size485.6 MB 62.4 MB
Events in quadrant A3,066,376398,252
Events in quadrant B2,936,998429,033
Events in quadrant C2,953,995420,678
Events in quadrant D6,129,582386,223

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119562
B0115891
C0116811
D0216541

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49382845.751316%
B4938971.964358%
C4938511.032807%
D493886717.557716%

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 6912 4938 174 174 2.52% 3.52%
B 6912 4939 52 52 0.75% 1.05%
C 6912 4939 36 36 0.52% 0.73%
D 6912 4939 784 784 11.34% 15.87%

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 15 169 598292 4934.24 607 598 121.1
A 7 16 111702 917.22 607 598 121.1
A 13 6 9994 77.57 607 598 121.1
B 5 172 290688 2505.32 617 603 115.8
B 4 251 54771 467.82 617 603 115.8
B 15 35 42691 363.49 617 603 115.8
C 15 214 218272 1558.86 607 612 139.6
C 0 10 159975 1141.34 607 612 139.6
C 0 207 94395 671.67 607 612 139.6
D 1 52 1397536 9833.14 578 563 142.1
D 12 235 947368 6664.45 578 563 142.1
D 8 195 813862 5724.72 578 563 142.1

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