ASTROSAT CZTI

Data Quality Report

Orbit 37162

Creation date: 2024-06-27T21:36:23.418848
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/AS1A11_079T01_9000005284_37162cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37162cztM0_level2_quad_clean.evt
Size (bytes)421,560,00071,372,160
Size402.0 MB 68.1 MB
Events in quadrant A2,654,023457,571
Events in quadrant B2,741,966454,655
Events in quadrant C3,188,150452,840
Events in quadrant D3,820,505422,558

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113113
B0116222
C0128122
D0150162

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5336110.206147%
B5336821.536732%
C5336851.592954%
D53362675.003748%

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 7039 5337 7 7 0.10% 0.13%
B 7039 5337 66 66 0.94% 1.24%
C 7039 5337 75 75 1.07% 1.41%
D 7039 5337 250 250 3.55% 4.68%

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 264616 2153.44 609 598 122.6
A 13 6 13108 102.04 609 598 122.6
A 15 174 10486 80.65 609 598 122.6
B 5 172 136814 1171.04 599 581 116.3
B 5 184 129435 1107.61 599 581 116.3
B 0 213 69570 593.02 599 581 116.3
C 0 10 351459 2511.08 593 597 139.7
C 14 254 293375 2095.38 593 597 139.7
C 15 214 226976 1620.17 593 597 139.7
D 2 249 813930 5720.91 586 571 142.2
D 2 153 329599 2314.28 586 571 142.2
D 13 249 104544 731.31 586 571 142.2

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