ASTROSAT CZTI

Data Quality Report

Orbit 23320

Creation date: 2024-06-27T18:52:47.584402
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/AS1A07_148T05_9000003446_23320cztM0_level2.evt modeM0/AS1A07_148T05_9000003446_23320cztM0_level2_quad_clean.evt
Size (bytes)474,030,72078,220,800
Size452.1 MB 74.6 MB
Events in quadrant A3,523,122490,108
Events in quadrant B3,348,038493,271
Events in quadrant C3,436,752477,426
Events in quadrant D3,625,009472,894

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145212
B0137942
C0141183
D0148622

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62331201.925237%
B62331091.748757%
C62321692.711810%
D62321512.422978%

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 7458 6234 13 13 0.17% 0.21%
B 7458 6233 0 0 0.00% 0.00%
C 7457 6233 2 2 0.03% 0.03%
D 7457 6232 60 60 0.80% 0.96%

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 6 16 222604 1295.68 856 842 171.2
A 13 254 10329 55.43 856 842 171.2
A 0 226 7511 38.96 856 842 171.2
B 12 111 18573 111.5 848 830 159.1
B 11 111 16648 99.4 848 830 159.1
B 14 111 14306 84.68 848 830 159.1
C 14 238 132566 685.14 826 835 192.3
C 10 9 42867 218.61 826 835 192.3
C 7 247 17526 86.81 826 835 192.3
D 1 52 233784 1149.59 838 816 202.7
D 12 233 105980 518.94 838 816 202.7
D 13 104 70181 342.29 838 816 202.7

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