ASTROSAT CZTI

Data Quality Report

Orbit 11320

Creation date: 2024-06-27T16:11:16.045227
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/AS1G08_028T01_9000001656_11320cztM0_level2.evt modeM0/AS1G08_028T01_9000001656_11320cztM0_level2_quad_clean.evt
Size (bytes)603,383,04063,786,240
Size575.4 MB 60.8 MB
Events in quadrant A5,025,746377,667
Events in quadrant B3,732,335393,804
Events in quadrant C3,022,316387,635
Events in quadrant D6,075,468341,145

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0188652
B0150331
C0130121
D0222421

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A616672111.693156%
B61662203.567953%
C6166410.664937%
D616681813.266299%

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 7356 6167 493 493 6.70% 7.99%
B 7356 6167 86 86 1.17% 1.39%
C 7356 6167 29 29 0.39% 0.47%
D 7356 6166 756 756 10.28% 12.26%

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 14 238 1597441 11118.52 698 685 143.6
A 8 5 552569 3842.87 698 685 143.6
A 1 162 53568 368.23 698 685 143.6
B 4 239 692614 4833.84 747 730 143.1
B 15 204 44940 308.87 747 730 143.1
B 0 214 18929 127.15 747 730 143.1
C 9 204 172502 1018.18 726 729 168.7
C 8 128 8575 46.51 726 729 168.7
C 13 61 5357 27.43 726 729 168.7
D 7 80 1097712 6663.67 676 658 164.6
D 1 52 918580 5575.59 676 658 164.6
D 10 253 880011 5341.32 676 658 164.6

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