ASTROSAT CZTI

Data Quality Report

Orbit 41991

Creation date: 2024-06-27T22:35:27.438068
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/AS1T05_132T01_9000005730_41991cztM0_level2.fits modeM0/AS1T05_132T01_9000005730_41991cztM0_level2_quad_clean.evt
Size (bytes)46,333,4407,142,400
Size44.2 MB 6.8 MB
Events in quadrant A226,58650,869
Events in quadrant B240,36751,293
Events in quadrant C211,83549,724
Events in quadrant D996,93524,467

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09310
B010400
C09260
D032753

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A46100.000000%
B46161.301518%
C46100.000000%
D46024753.695652%

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 461 461 0 0 0.00% 0.00%
B 461 461 5 5 1.08% 1.08%
C 461 461 0 0 0.00% 0.00%
D 460 460 296 296 64.35% 64.35%

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 10 83 38852 3155.01 48 47 12.3
A 15 223 958 74.07 48 47 12.3
A 13 6 894 68.86 48 47 12.3
B 5 255 43243 3675.73 48 46 11.8
B 0 190 5609 473.37 48 46 11.8
B 0 156 1354 111.3 48 46 11.8
C 15 214 19211 1445.76 49 49 13.3
C 0 207 826 58.62 49 49 13.3
C 8 229 360 23.46 49 49 13.3
D 1 52 515047 42369.28 40 38 12.2
D 2 249 315872 25983.35 40 38 12.2
D 10 199 3391 275.85 40 38 12.2

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