ASTROSAT CZTI

Data Quality Report

Orbit 00245

Creation date: 2024-06-27T13:58:21.930782
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_122T01_9000000026_00245cztM0_level2.evt modeM0/AS1P01_122T01_9000000026_00245cztM0_level2_quad_clean.evt
Size (bytes)830,787,84074,845,440
Size792.3 MB 71.4 MB
Events in quadrant A6,055,684481,333
Events in quadrant B6,482,537487,372
Events in quadrant C5,469,396480,948
Events in quadrant D6,804,883450,257

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0217352
B0229731
C0199631
D0239401

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A523230.057339%
B5232701.337920%
C5232110.210245%
D52321402.675841%

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 6937 5233 112 112 1.61% 2.14%
B 6937 5233 227 227 3.27% 4.34%
C 6937 5233 52 52 0.75% 0.99%
D 6937 5233 451 451 6.50% 8.62%

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 15 250 24382 65.27 1545 1531 350.1
A 15 31 20599 54.46 1545 1531 350.1
A 13 17 14540 37.16 1545 1531 350.1
B 2 32 407868 1125.84 1548 1563 360.9
B 0 214 99343 270.94 1548 1563 360.9
B 10 14 35663 94.49 1548 1563 360.9
C 12 204 42281 107.56 1375 1423 379.9
C 9 206 7222 15.27 1375 1423 379.9
C 1 1 6780 14.1 1375 1423 379.9
D 1 4 963523 2367.92 1296 1346 406.3
D 2 63 362084 887.78 1296 1346 406.3
D 10 154 334489 819.87 1296 1346 406.3

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter