ASTROSAT CZTI

Data Quality Report

Orbit 02839

Creation date: 2024-06-27T14:22:18.138872
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/AS1P01_999T99_9000000410_02839cztM0_level2.evt modeM0/AS1P01_999T99_9000000410_02839cztM0_level2_quad_clean.evt
Size (bytes)641,571,84033,514,560
Size611.9 MB 32.0 MB
Events in quadrant A2,035,294185,154
Events in quadrant B2,972,096187,945
Events in quadrant C5,579,779168,884
Events in quadrant D8,508,281124,752

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A099433
B0122782
C0200362
D0286542

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A494430.060680%
B4944440.889968%
C4944106321.500809%
D4944281356.897249%

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 7130 4945 0 0 0.00% 0.00%
B 7130 4945 32 32 0.45% 0.65%
C 7130 4945 840 840 11.78% 16.99%
D 7130 4945 2089 2089 29.30% 42.24%

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 0 31 18799 177.37 508 496 103.2
A 0 226 10522 97.16 508 496 103.2
A 8 4 9994 92.04 508 496 103.2
B 0 4 513220 5064.68 520 509 101.2
B 0 168 98822 971.16 520 509 101.2
B 0 191 69364 680.17 520 509 101.2
C 0 219 2282575 21086.8 464 467 108.2
C 1 16 845264 7805.97 464 467 108.2
C 1 192 335497 3095.69 464 467 108.2
D 0 226 4019737 47689.94 333 327 84.3
D 1 4 2527735 29987.47 333 327 84.3
D 1 66 510661 6055.07 333 327 84.3

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
Veto Counter