ASTROSAT CZTI

Data Quality Report

Orbit 26281

Creation date: 2024-06-27T19:26:57.793472
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/AS1A09_079T03_9000003790_26281cztM0_level2.evt modeM0/AS1A09_079T03_9000003790_26281cztM0_level2_quad_clean.evt
Size (bytes)533,298,24072,809,280
Size508.6 MB 69.4 MB
Events in quadrant A3,910,893435,189
Events in quadrant B3,490,688444,786
Events in quadrant C3,501,261438,212
Events in quadrant D4,799,025424,497

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160220
B0147610
C0146890
D0188670

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66251692.550943%
B6625560.845283%
C6624971.464372%
D66243214.846014%

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 7590 6626 75 75 0.99% 1.13%
B 7590 6626 6 6 0.08% 0.09%
C 7589 6625 6 6 0.08% 0.09%
D 7589 6625 236 236 3.11% 3.56%

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 0 13 698986 4135.47 832 813 168.8
A 13 254 11370 62.53 832 813 168.8
A 3 137 7596 40.18 832 813 168.8
B 6 203 135121 843.8 836 815 159.2
B 5 172 31064 190.04 836 815 159.2
B 7 219 22085 133.63 836 815 159.2
C 14 238 128112 674.73 808 814 188.7
C 3 233 124898 657.7 808 814 188.7
C 4 254 84476 443.44 808 814 188.7
D 1 52 1694090 8806.2 799 779 192.3
D 2 234 29193 147.77 799 779 192.3
D 8 195 16181 80.1 799 779 192.3

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