ASTROSAT CZTI

Data Quality Report

Orbit 31296

Creation date: 2024-06-27T20:26:17.275166
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/AS1T04_024T01_9000004530_31296cztM0_level2.evt modeM0/AS1T04_024T01_9000004530_31296cztM0_level2_quad_clean.evt
Size (bytes)655,240,32076,227,840
Size624.9 MB 72.7 MB
Events in quadrant A3,596,212486,271
Events in quadrant B5,429,251477,532
Events in quadrant C6,581,168430,934
Events in quadrant D3,798,647460,306

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144942
B0203214
C0242282
D0151642

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64931592.448791%
B64922604.004929%
C649288313.601356%
D64921402.156500%

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 7728 6493 0 0 0.00% 0.00%
B 7727 6492 12 12 0.16% 0.18%
C 7727 6492 191 191 2.47% 2.94%
D 7727 6492 18 18 0.23% 0.28%

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 13 254 12506 63.06 932 917 183.8
A 3 137 8648 42.07 932 917 183.8
A 0 226 7965 38.35 932 917 183.8
B 6 159 1725418 10142.87 902 880 170.0
B 4 80 150817 881.85 902 880 170.0
B 12 111 20122 113.17 902 880 170.0
C 3 233 2852147 15211.44 824 832 187.4
C 14 238 177861 944.43 824 832 187.4
C 0 10 154874 821.8 824 832 187.4
D 8 195 242359 1096.05 891 871 220.3
D 12 233 115377 519.71 891 871 220.3
D 2 250 29205 128.6 891 871 220.3

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