ASTROSAT CZTI

Data Quality Report

Orbit 24108

Creation date: 2024-06-27T19:02:15.653263
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/AS1C05_012T04_9000003564_24108cztM0_level2.evt modeM0/AS1C05_012T04_9000003564_24108cztM0_level2_quad_clean.evt
Size (bytes)1,009,094,400236,914,560
Size962.3 MB 225.9 MB
Events in quadrant A5,875,3101,606,558
Events in quadrant B6,175,1551,618,349
Events in quadrant C6,036,3261,570,984
Events in quadrant D11,610,4451,497,049

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02600
B02600
C02600
D02600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0261923
B0270483
C0262373
D0434333

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12779380.297363%
B127791170.915565%
C127781351.056503%
D127786294.922523%

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 14099 12781 0 0 0.00% 0.00%
B 14099 12781 44 44 0.31% 0.34%
C 14098 12779 0 0 0.00% 0.00%
D 14098 12779 361 361 2.56% 2.82%

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 3 1 42827 136.89 1507 1473 302.1
A 13 254 22605 69.95 1507 1473 302.1
A 2 250 16588 50.03 1507 1473 302.1
B 0 245 129023 455.43 1498 1464 280.1
B 15 33 54499 189.35 1498 1464 280.1
B 0 229 37855 129.93 1498 1464 280.1
C 14 238 229368 675.09 1455 1463 337.6
C 7 247 85669 249.43 1455 1463 337.6
C 3 233 20822 57.34 1455 1463 337.6
D 8 195 5113712 14543.52 1450 1403 351.5
D 1 52 656527 1863.7 1450 1403 351.5
D 12 233 117186 329.38 1450 1403 351.5

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