ASTROSAT CZTI

Data Quality Report

Orbit 03001

Creation date: 2024-06-27T14:23:18.003668
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_238T02_9000000420_03001cztM0_level2.evt modeM0/AS1G05_238T02_9000000420_03001cztM0_level2_quad_clean.evt
Size (bytes)423,685,44053,709,120
Size404.1 MB 51.2 MB
Events in quadrant A3,668,888312,422
Events in quadrant B2,609,144322,829
Events in quadrant C2,776,123313,485
Events in quadrant D3,427,058315,852

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144143
B0113132
C0123272
D0139212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51502484.815534%
B5150320.621359%
C51502414.679612%
D5150911.766990%

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 7307 5151 191 191 2.61% 3.71%
B 7307 5151 14 14 0.19% 0.27%
C 7307 5151 208 208 2.85% 4.04%
D 7307 5151 110 110 1.51% 2.14%

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 1050909 9892.88 514 503 106.2
A 0 50 442085 4158.89 514 503 106.2
A 14 249 165153 1550.7 514 503 106.2
B 8 3 240056 2300.42 539 526 104.1
B 6 203 142564 1364.12 539 526 104.1
B 2 249 40398 382.93 539 526 104.1
C 0 219 681780 5734.98 505 507 118.8
C 6 80 74419 622.19 505 507 118.8
C 1 16 27445 226.77 505 507 118.8
D 13 114 1257383 9656.74 510 496 130.2
D 13 239 72640 554.28 510 496 130.2
D 7 80 41882 317.97 510 496 130.2

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
Veto Counter