ASTROSAT CZTI

Data Quality Report

Orbit 38673

Creation date: 2024-06-27T21:54:55.964597
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/AS1A12_054T01_9000005392_38673cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38673cztM0_level2_quad_clean.evt
Size (bytes)950,368,320242,478,720
Size906.3 MB 231.2 MB
Events in quadrant A7,745,7301,667,563
Events in quadrant B7,010,0511,692,803
Events in quadrant C7,652,5401,600,317
Events in quadrant D11,612,4671,349,384

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0470
B0470
C0470
D0480

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03040
B03040
C03040
D03040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0323935
B0309364
C0321564
D0450494

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14953700.468133%
B14953410.274192%
C149531060.708888%
D1495314199.489735%

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 19132 14956 31 31 0.16% 0.21%
B 19132 14956 10 10 0.05% 0.07%
C 19132 14956 82 82 0.43% 0.55%
D 19132 14956 1315 1315 6.87% 8.79%

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 982001 2873.31 1680 1648 341.2
A 13 248 81543 234.16 1680 1648 341.2
A 15 174 63326 180.77 1680 1648 341.2
B 5 200 139553 431.81 1662 1615 319.4
B 4 251 91275 280.68 1662 1615 319.4
B 0 230 74412 227.89 1662 1615 319.4
C 15 214 592273 1560.95 1626 1636 378.4
C 14 254 582579 1535.34 1626 1636 378.4
C 2 16 57359 147.27 1626 1636 378.4
D 10 118 2050914 5380.19 1559 1515 380.9
D 1 47 1627251 4267.97 1559 1515 380.9
D 13 249 616541 1614.6 1559 1515 380.9

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