ASTROSAT CZTI

Data Quality Report

Orbit 43366

Creation date: 2024-06-27T22:51:05.799420
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_143T01_9000005870_43366cztM0_level2.fits modeM0/AS1A09_143T01_9000005870_43366cztM0_level2_quad_clean.evt
Size (bytes)677,664,000171,089,280
Size646.3 MB 163.2 MB
Events in quadrant A6,247,4571,139,109
Events in quadrant B5,306,2911,174,192
Events in quadrant C7,221,6521,102,942
Events in quadrant D5,476,8331,019,616

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0247543
B0227513
C0284923
D0241863

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A107411451.349967%
B10742290.269968%
C107421351.256749%
D107421571.461553%

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 13546 10743 107 107 0.79% 1.00%
B 13547 10744 12 12 0.09% 0.11%
C 13547 10744 114 114 0.84% 1.06%
D 13547 10744 138 138 1.02% 1.28%

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 10 83 1124941 4685.71 1167 1144 239.8
A 15 237 546687 2274.66 1167 1144 239.8
A 13 6 44752 181.83 1167 1144 239.8
B 0 189 510963 2272.62 1166 1130 224.3
B 0 186 46170 200.77 1166 1130 224.3
B 0 245 43266 187.82 1166 1130 224.3
C 8 229 1477198 5576.3 1137 1143 264.7
C 0 239 712596 2687.75 1137 1143 264.7
C 15 214 437987 1650.33 1137 1143 264.7
D 1 52 258756 922.7 1140 1105 279.2
D 12 233 132466 470.43 1140 1105 279.2
D 5 32 126533 449.18 1140 1105 279.2

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