ASTROSAT CZTI

Data Quality Report

Orbit 40818

Creation date: 2024-06-27T22:20:54.729885
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_099T03_9000005570_40818cztM0_level2.fits modeM0/AS1A12_099T03_9000005570_40818cztM0_level2_quad_clean.evt
Size (bytes)343,990,08086,964,480
Size328.1 MB 82.9 MB
Events in quadrant A2,965,981584,531
Events in quadrant B2,421,725602,099
Events in quadrant C2,512,532568,408
Events in quadrant D4,419,661506,287

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120812
B0109411
C0108961
D0168261

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5309180.339047%
B5309270.508570%
C530990.169523%
D53093246.102844%

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 7012 5310 9 9 0.13% 0.17%
B 7012 5310 9 9 0.13% 0.17%
C 7012 5310 4 4 0.06% 0.08%
D 7012 5310 349 349 4.98% 6.57%

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 496324 4115.3 582 570 120.5
A 13 248 88089 726.5 582 570 120.5
A 12 189 45067 369.37 582 570 120.5
B 0 190 106070 925.61 579 563 114.0
B 15 85 32396 279.27 579 563 114.0
B 12 111 14122 118.95 579 563 114.0
C 15 214 226872 1736.77 562 566 130.3
C 0 10 46686 353.95 562 566 130.3
C 15 159 33839 255.35 562 566 130.3
D 12 79 949537 6929.02 549 532 137.0
D 1 47 487586 3556.15 549 532 137.0
D 2 249 344279 2509.82 549 532 137.0

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