ASTROSAT CZTI

Data Quality Report

Orbit 20220524_T05_009T07_9000005152_level2

Creation date: 2022-05-26T17:11:30.514310
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_009T07_9000005152cztM0_level2_bc.evt modeM0/AS1T05_009T07_9000005152cztM0_level2_quad_clean.evt
Size (bytes)230,607,36068,757,120
Size219.9 MB 65.6 MB
Events in quadrant A1,029,088555,484
Events in quadrant B2,147,029202,824
Events in quadrant C1,454,092532,601
Events in quadrant D2,060,895497,227

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A085390
B0348420
C0102750
D0130720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A414170.169041%
B4141413899.927554%
C41411152.777107%
D41413257.848346%

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 4141 4141 0 0 0.00% 0.00%
B 4139 4139 18 18 0.43% 0.43%
C 4140 4139 21 21 0.51% 0.51%
D 4140 4140 26 26 0.63% 0.63%

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 106336 2029.89 233 229 52.3
A 8 144 8640 160.91 233 229 52.3
A 13 254 6027 110.92 233 229 52.3
B 5 31 925207 41659.04 82 82 22.2
B 5 15 826580 37217.79 82 82 22.2
B 0 190 44081 1981.31 82 82 22.2
C 9 187 242836 4685.08 220 218 51.8
C 15 214 162116 3126.33 220 218 51.8
C 0 10 94512 1820.86 220 218 51.8
D 7 223 564445 10541.27 217 210 53.5
D 12 17 158852 2963.82 217 210 53.5
D 10 118 152931 2853.2 217 210 53.5

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