ASTROSAT CZTI

Data Quality Report

Orbit 37133

Creation date: 2024-06-27T21:36:00.835826
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/AS1A11_079T01_9000005284_37133cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37133cztM0_level2_quad_clean.evt
Size (bytes)411,788,16069,128,640
Size392.7 MB 65.9 MB
Events in quadrant A2,692,767437,849
Events in quadrant B3,068,638434,800
Events in quadrant C3,133,118432,161
Events in quadrant D3,211,322412,337

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114843
B0127352
C0125842
D0130472

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5368190.353949%
B53681793.334575%
C5368901.676602%
D53681282.384501%

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 7100 5369 9 9 0.13% 0.17%
B 7100 5369 116 116 1.63% 2.16%
C 7100 5369 78 78 1.10% 1.45%
D 7100 5369 122 122 1.72% 2.27%

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 258929 2096.22 608 596 123.2
A 9 143 71333 573.99 608 596 123.2
A 13 6 9830 74.93 608 596 123.2
B 5 172 556505 4820.61 595 579 115.3
B 5 200 74779 643.41 595 579 115.3
B 5 184 54335 466.14 595 579 115.3
C 14 254 325249 2351.59 590 594 138.1
C 15 214 245853 1776.5 590 594 138.1
C 0 10 168615 1217.04 590 594 138.1
D 2 249 246919 1705.03 589 573 144.5
D 13 249 204535 1411.68 589 573 144.5
D 12 235 190550 1314.88 589 573 144.5

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