ASTROSAT CZTI

Data Quality Report

Orbit 47664

Creation date: 2024-07-21T18:25:20.133772
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/AS1A13_082T01_9000006342_47664cztM0_level2.fits modeM0/AS1A13_082T01_9000006342_47664cztM0_level2_quad_clean.evt
Size (bytes)460,722,240105,693,120
Size439.4 MB 100.8 MB
Events in quadrant A6,526,291703,015
Events in quadrant B3,658,377721,952
Events in quadrant C2,811,908702,298
Events in quadrant D3,579,131642,755

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0245831
B0147721
C0126481
D0147251

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61702233.614263%
B61711832.965484%
C6171460.745422%
D61711572.544158%

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 7350 6171 25 25 0.34% 0.41%
B 7351 6172 56 56 0.76% 0.91%
C 7351 6172 1 1 0.01% 0.02%
D 7351 6172 91 91 1.24% 1.47%

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 3505609 23068.51 732 718 151.9
A 9 191 173476 1137.06 732 718 151.9
A 3 14 14332 89.6 732 718 151.9
B 0 200 329801 2301.11 723 701 143.0
B 5 172 268617 1873.31 723 701 143.0
B 0 190 49538 341.47 723 701 143.0
C 14 254 26870 155.07 713 720 168.6
C 13 61 4791 24.14 713 720 168.6
C 1 3 4158 20.39 713 720 168.6
D 2 249 306649 1699.04 719 694 180.1
D 10 181 297143 1646.25 719 694 180.1
D 12 2 68263 375.23 719 694 180.1

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