ASTROSAT CZTI

Data Quality Report

Orbit 39624

Creation date: 2024-06-27T22:06:58.233328
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/AS1A12_018T01_9000005488_39624cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39624cztM0_level2_quad_clean.evt
Size (bytes)437,002,56091,290,240
Size416.8 MB 87.1 MB
Events in quadrant A3,089,266617,970
Events in quadrant B2,697,302633,472
Events in quadrant C5,273,372581,044
Events in quadrant D4,673,944533,538

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129193
B0122832
C0196792
D0179142

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5692691.212228%
B56921101.932537%
C56925319.328883%
D56925249.205903%

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 7305 5693 48 48 0.66% 0.84%
B 7305 5693 58 58 0.79% 1.02%
C 7305 5693 470 470 6.43% 8.26%
D 7305 5693 456 456 6.24% 8.01%

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 451060 3686.93 598 586 122.2
A 15 222 169492 1382.42 598 586 122.2
A 15 174 128791 1049.3 598 586 122.2
B 5 172 277197 2400.49 595 579 115.2
B 5 255 53635 460.42 595 579 115.2
B 12 111 14447 120.35 595 579 115.2
C 9 187 1670043 12462.96 573 576 134.0
C 15 208 1085685 8100.59 573 576 134.0
C 15 214 230477 1716.26 573 576 134.0
D 13 249 1437846 10312.32 566 550 139.4
D 12 227 650103 4660.41 566 550 139.4
D 1 52 96558 688.84 566 550 139.4

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