ASTROSAT CZTI

Data Quality Report

Orbit 20170614_A03_091T05_9000001300_level2

Creation date: 2025-11-14T14:19:48.256472
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/AS1A03_091T05_9000001300cztM0_level2.fits modeM0/AS1A03_091T05_9000001300cztM0_level2_quad_clean.evt
Size (bytes)325,126,080274,536,000
Size310.1 MB 261.8 MB
Events in quadrant A1,938,1161,536,077
Events in quadrant B1,928,1821,587,563
Events in quadrant C1,948,1781,488,234
Events in quadrant D1,678,7421,348,867

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06980
B06900
C06980
D06980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0883430
B0732970
C0708090
D0783260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3423114224.154129%
B342526351.853906%
C342623481.015703%
D342486902.014716%

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 40419 34320 0 0 0.00% 0.00%
B 40419 34323 0 0 0.00% 0.00%
C 40419 34328 0 0 0.00% 0.00%
D 40419 34317 0 0 0.00% 0.00%

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 0 29 1830 10.68 504 471 127.3
A 7 110 1626 9.08 504 471 127.3
A 9 19 1452 7.71 504 471 127.3
B 2 9 1666 11.77 507 482 100.6
B 2 8 1303 8.16 507 482 100.6
B 3 17 1293 8.06 507 482 100.6
C 1 80 1428 7.01 514 477 135.8
C 1 81 1376 6.62 514 477 135.8
C 2 191 1322 6.22 514 477 135.8
D 6 231 1230 6.15 477 432 129.9
D 3 14 1229 6.14 477 432 129.9
D 7 3 1216 6.04 477 432 129.9

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