ASTROSAT CZTI

Data Quality Report

Orbit 38922

Creation date: 2024-06-27T21:58:11.099504
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/AS1T05_064T01_9000005416_38922cztM0_level2.fits modeM0/AS1T05_064T01_9000005416_38922cztM0_level2_quad_clean.evt
Size (bytes)470,972,16091,837,440
Size449.2 MB 87.6 MB
Events in quadrant A3,400,343645,991
Events in quadrant B2,608,559650,640
Events in quadrant C2,645,790625,689
Events in quadrant D8,348,709471,145

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137852
B0115751
C0113141
D0286811

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5543180.324734%
B5543370.667509%
C554390.162367%
D5543135024.355042%

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 7276 5544 4 4 0.05% 0.07%
B 7276 5544 30 30 0.41% 0.54%
C 7276 5544 6 6 0.08% 0.11%
D 7275 5543 1333 1333 18.32% 24.05%

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 425362 3383.18 619 605 125.5
A 12 16 408794 3251.21 619 605 125.5
A 13 248 70600 557.5 619 605 125.5
B 5 200 138010 1181.39 610 594 116.3
B 0 155 21443 179.24 610 594 116.3
B 5 172 20575 171.78 610 594 116.3
C 15 214 229449 1638.15 604 607 139.7
C 12 249 34439 242.18 604 607 139.7
C 0 10 21982 153.01 604 607 139.7
D 12 227 2041458 15343.23 549 534 133.0
D 1 52 1821081 13686.49 549 534 133.0
D 12 235 808245 6072.2 549 534 133.0

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