ASTROSAT CZTI

Data Quality Report

Orbit 37321

Creation date: 2024-06-27T21:38:25.934136
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/AS1A11_030T02_9000005310_37321cztM0_level2.evt modeM0/AS1A11_030T02_9000005310_37321cztM0_level2_quad_clean.evt
Size (bytes)422,709,12053,804,160
Size403.1 MB 51.3 MB
Events in quadrant A2,997,112318,660
Events in quadrant B2,912,093319,903
Events in quadrant C3,573,197309,016
Events in quadrant D2,949,651300,332

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121043
B0120152
C0137622
D0123732

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5444410.753123%
B54441071.965467%
C54442504.592212%
D5444601.102131%

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 7238 5445 22 22 0.30% 0.40%
B 7238 5445 59 59 0.82% 1.08%
C 7238 5445 228 228 3.15% 4.19%
D 7238 5445 48 48 0.66% 0.88%

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 280812 2199.43 632 621 127.4
A 13 248 113887 889.11 632 621 127.4
A 9 143 72570 564.78 632 621 127.4
B 0 190 170869 1418.42 621 605 120.0
B 12 18 102504 848.89 621 605 120.0
B 5 172 74200 613.1 621 605 120.0
C 1 23 768217 5462.0 602 606 140.5
C 15 214 229132 1626.09 602 606 140.5
C 0 10 157387 1115.59 602 606 140.5
D 2 249 316533 2087.32 614 596 151.4
D 13 249 111799 734.69 614 596 151.4
D 2 153 39722 258.49 614 596 151.4

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