ASTROSAT CZTI

Data Quality Report

Orbit 39409

Creation date: 2024-06-27T22:04:12.821809
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/AS1T05_074T01_9000005472_39409cztM0_level2.fits modeM0/AS1T05_074T01_9000005472_39409cztM0_level2_quad_clean.evt
Size (bytes)100,589,76018,313,920
Size95.9 MB 17.5 MB
Events in quadrant A1,150,404105,227
Events in quadrant B660,677128,903
Events in quadrant C754,009122,554
Events in quadrant D1,065,864111,172

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A041672
B026971
C029391
D040081

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A115323520.381613%
B1153514.423244%
C1153272.341717%
D1153534.596704%

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 2466 1154 156 156 6.33% 13.52%
B 2466 1154 37 37 1.50% 3.21%
C 2466 1154 21 21 0.85% 1.82%
D 2466 1154 42 42 1.70% 3.64%

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 13 248 564181 21000.68 121 119 26.9
A 10 83 111624 4151.46 121 119 26.9
A 2 79 2869 102.39 121 119 26.9
B 4 170 131136 4722.21 131 127 27.7
B 5 172 8826 313.55 131 127 27.7
B 12 111 3320 115.09 131 127 27.7
C 15 208 182652 5795.56 127 127 31.5
C 15 214 53060 1680.73 127 127 31.5
C 9 187 19380 611.32 127 127 31.5
D 12 235 465040 14119.9 126 122 32.9
D 13 249 50981 1544.63 126 122 32.9
D 12 227 48714 1475.78 126 122 32.9

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