ASTROSAT CZTI

Data Quality Report

Orbit 37387

Creation date: 2024-06-27T21:39:19.833839
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/AS1C07_001T01_9000005320_37387cztM0_level2.evt modeM0/AS1C07_001T01_9000005320_37387cztM0_level2_quad_clean.evt
Size (bytes)572,112,00095,181,120
Size545.6 MB 90.8 MB
Events in quadrant A2,772,031658,162
Events in quadrant B2,773,815664,461
Events in quadrant C2,822,374660,491
Events in quadrant D8,598,963526,984

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117514
B0118242
C0118442
D0292852

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5309210.395555%
B5309621.167828%
C5309561.054813%
D5309174132.793370%

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 7044 5311 13 13 0.18% 0.24%
B 7044 5311 31 31 0.44% 0.58%
C 7044 5311 40 40 0.57% 0.75%
D 7044 5311 1583 1583 22.47% 29.81%

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 282277 2359.55 588 577 119.4
A 6 10 61753 512.42 588 577 119.4
A 13 248 44292 366.16 588 577 119.4
B 5 172 150011 1337.26 586 570 111.8
B 5 200 141400 1260.2 586 570 111.8
B 0 190 34367 302.43 586 570 111.8
C 15 214 225525 1678.46 577 580 134.0
C 14 254 169446 1260.02 577 580 134.0
C 0 10 90930 674.16 577 580 134.0
D 12 235 4522104 37251.28 496 481 121.4
D 12 227 590406 4860.08 496 481 121.4
D 1 47 534442 4399.02 496 481 121.4

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