ASTROSAT CZTI

Data Quality Report

Orbit 02979

Creation date: 2024-06-27T14:23:00.051534
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/AS1G05_238T05_9000000418_02979cztM0_level2.evt modeM0/AS1G05_238T05_9000000418_02979cztM0_level2_quad_clean.evt
Size (bytes)423,829,44055,575,360
Size404.2 MB 53.0 MB
Events in quadrant A4,349,758325,814
Events in quadrant B2,762,139347,017
Events in quadrant C2,302,785335,938
Events in quadrant D3,082,105323,769

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162483
B0114652
C0103382
D0125922

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A498752810.587528%
B4987511.022659%
C4987150.300782%
D4987811.624223%

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 7143 4988 309 309 4.33% 6.19%
B 7143 4988 36 36 0.50% 0.72%
C 7143 4988 11 11 0.15% 0.22%
D 7143 4988 74 74 1.04% 1.48%

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 13 9 1941094 17694.29 543 532 109.7
A 0 50 206076 1874.18 543 532 109.7
A 0 31 35366 317.62 543 532 109.7
B 5 70 203289 1853.03 571 558 109.4
B 2 249 171718 1564.46 571 558 109.4
B 0 219 96013 872.49 571 558 109.4
C 6 80 77045 610.27 540 542 125.4
C 10 55 40446 318.32 540 542 125.4
C 15 208 31799 249.34 540 542 125.4
D 13 114 599297 4643.26 537 523 129.0
D 1 31 216764 1676.86 537 523 129.0
D 14 129 57682 443.25 537 523 129.0

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