ASTROSAT CZTI

Data Quality Report

Orbit 20211103_A11_080T01_9000004756_level2

Creation date: 2025-12-30T12:35:28.558035
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_080T01_9000004756cztM0_level2.fits modeM0/AS1A11_080T01_9000004756cztM0_level2_quad_clean.evt
Size (bytes)320,541,120404,089,920
Size305.7 MB 385.4 MB
Events in quadrant A1,992,1282,755,542
Events in quadrant B1,850,7642,553,223
Events in quadrant C1,919,4462,551,170
Events in quadrant D1,550,3701,986,117

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07140
B07160
C07130
D07180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01390
B01390
C01370
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0706920
B0899590
C0755870
D01360120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A34852290.083209%
B3480519195.513576%
C348484631.328627%
D34783457813.161602%

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 122197 34975 0 0 0.00% 0.00%
B 122199 34860 0 0 0.00% 0.00%
C 122199 34934 0 0 0.00% 0.00%
D 122198 34850 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 1662 9.13 519 488 128.6
A 9 19 1619 8.8 519 488 128.6
A 7 110 1611 8.73 519 488 128.6
B 2 9 1556 10.76 490 466 101.3
B 3 80 1445 9.67 490 466 101.3
B 2 8 1272 7.96 490 466 101.3
C 1 81 1823 10.33 507 476 130.4
C 1 80 1715 9.5 507 476 130.4
C 1 65 1372 6.87 507 476 130.4
D 10 113 1166 6.23 444 405 122.2
D 15 47 1158 6.16 444 405 122.2
D 4 160 1149 6.09 444 405 122.2

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter