ASTROSAT CZTI

Data Quality Report

Orbit 20190515_T03_116T01_9000002916_level2

Creation date: 2025-11-30T05:19:29.651773
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/AS1T03_116T01_9000002916cztM0_level2.fits modeM0/AS1T03_116T01_9000002916cztM0_level2_quad_clean.evt
Size (bytes)889,940,160659,410,560
Size848.7 MB 628.9 MB
Events in quadrant A5,565,3483,657,896
Events in quadrant B5,315,1243,646,618
Events in quadrant C5,345,8423,463,514
Events in quadrant D4,550,9383,027,539

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018280
B018280
C018280
D018280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01873590
B01910130
C01922560
D02808280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01510
B01510
C01510
D01510

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9004810061.117182%
B9004813911.544732%
C9004816351.815698%
D9004873728.186745%

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 104907 90035 0 0 0.00% 0.00%
B 104907 90037 0 0 0.00% 0.00%
C 104907 90037 0 0 0.00% 0.00%
D 104907 89991 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 5377 11.35 1448 1357 354.2
A 7 110 4469 8.79 1448 1357 354.2
A 9 19 4215 8.07 1448 1357 354.2
B 2 9 4402 11.25 1402 1340 272.1
B 2 8 3644 8.47 1402 1340 272.1
B 3 17 3514 7.99 1402 1340 272.1
C 12 241 3743 6.67 1412 1319 363.7
C 3 126 3626 6.34 1412 1319 363.7
C 12 250 3615 6.31 1412 1319 363.7
D 3 14 3282 6.11 1298 1180 343.9
D 6 231 3191 5.85 1298 1180 343.9
D 7 3 3174 5.8 1298 1180 343.9

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