ASTROSAT CZTI

Data Quality Report

Orbit 47474

Creation date: 2024-07-09T09:15:19.143638
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_089T01_9000006330_47474cztM0_level2.fits modeM0/AS1A13_089T01_9000006330_47474cztM0_level2_quad_clean.evt
Size (bytes)470,024,640105,384,960
Size448.3 MB 100.5 MB
Events in quadrant A6,977,246694,788
Events in quadrant B3,083,898735,240
Events in quadrant C3,106,816697,447
Events in quadrant D3,757,913638,064

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0247521
B0132582
C0131931
D0151761

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60983205.247622%
B6098761.246310%
C6098410.672352%
D60981262.066251%

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 7313 6100 90 90 1.23% 1.48%
B 7313 6100 17 17 0.23% 0.28%
C 7313 6100 11 11 0.15% 0.18%
D 7313 6100 85 85 1.16% 1.39%

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 3779272 25966.07 704 689 145.5
A 9 191 282815 1938.74 704 689 145.5
A 0 247 127037 868.25 704 689 145.5
B 7 221 90335 646.95 712 691 138.6
B 0 198 78880 564.28 712 691 138.6
B 0 200 48051 341.79 712 691 138.6
C 3 233 274186 1654.39 701 704 165.3
C 2 0 29138 172.01 701 704 165.3
C 0 207 27502 162.11 701 704 165.3
D 2 165 295480 1670.7 700 677 176.5
D 14 34 259098 1464.51 700 677 176.5
D 15 127 105201 592.35 700 677 176.5

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