ASTROSAT CZTI

Data Quality Report

Orbit 46323

Creation date: 2024-06-27T23:21:42.583267
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/AS1T05_200T01_9000006196_46323cztM0_level2.fits modeM0/AS1T05_200T01_9000006196_46323cztM0_level2_quad_clean.evt
Size (bytes)1,191,159,360178,254,720
Size1.1 GB 170.0 MB
Events in quadrant A22,078,284622,441
Events in quadrant B7,814,2711,378,113
Events in quadrant C5,604,9721,316,293
Events in quadrant D7,585,1621,179,645

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02640
B02640
C02640
D02640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0743642
B0317342
C0267052
D0319062

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13030736856.546431%
B130293332.555837%
C13029350.268632%
D130294343.331031%

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 14079 13030 4462 4462 31.69% 34.24%
B 14079 13030 181 181 1.29% 1.39%
C 14079 13031 13 13 0.09% 0.10%
D 14079 13031 293 293 2.08% 2.25%

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 15 223 15398863 88971.19 830 813 173.1
A 10 83 3342175 19306.66 830 813 173.1
A 15 239 63739 363.59 830 813 173.1
B 3 112 1298807 4667.53 1406 1361 278.0
B 8 234 604731 2170.61 1406 1361 278.0
B 5 172 153784 548.34 1406 1361 278.0
C 3 233 85284 258.3 1388 1394 324.8
C 12 2 49629 148.52 1388 1394 324.8
C 1 3 29894 87.75 1388 1394 324.8
D 1 52 1154392 3363.61 1365 1322 342.8
D 13 249 430840 1252.94 1365 1322 342.8
D 13 171 241883 701.74 1365 1322 342.8

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