ASTROSAT CZTI

Data Quality Report

Orbit 36027

Creation date: 2024-06-27T21:21:28.731386
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_069T01_9000005158_36027cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36027cztM0_level2_quad_clean.evt
Size (bytes)450,604,80060,238,080
Size429.7 MB 57.4 MB
Events in quadrant A2,541,817381,019
Events in quadrant B3,282,716378,357
Events in quadrant C3,153,173367,117
Events in quadrant D4,317,216334,124

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 7062 5180 1 1 0.01% 0.02%
B 7062 5180 104 104 1.47% 2.01%
C 7062 5180 72 72 1.02% 1.39%
D 7062 5180 337 337 4.77% 6.51%

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 160444 1280.31 614 604 124.8
A 13 254 7648 56.42 614 604 124.8
A 3 137 6453 46.85 614 604 124.8
B 5 236 365646 3137.87 608 592 116.3
B 5 172 241098 2067.3 608 592 116.3
B 4 171 101565 867.93 608 592 116.3
C 10 49 273180 1967.62 593 597 138.5
C 0 10 234273 1686.78 593 597 138.5
C 15 214 214228 1542.08 593 597 138.5
D 12 235 1000413 7080.81 579 563 141.2
D 12 227 516839 3656.2 579 563 141.2
D 10 118 260894 1843.63 579 563 141.2

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