ASTROSAT CZTI

Data Quality Report

Orbit 15558

Creation date: 2024-06-27T17:10:38.516367
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/AS1T02_083T01_9000002304_15558cztM0_level2.evt modeM0/AS1T02_083T01_9000002304_15558cztM0_level2_quad_clean.evt
Size (bytes)492,747,84070,188,480
Size469.9 MB 66.9 MB
Events in quadrant A3,257,244425,499
Events in quadrant B3,403,452428,971
Events in quadrant C3,337,796420,404
Events in quadrant D4,500,811414,725

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135053
B0139912
C0137642
D0173592

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6234821.315367%
B62341011.620148%
C62341201.924928%
D62345719.159448%

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 7525 6235 15 15 0.20% 0.24%
B 7525 6235 9 9 0.12% 0.14%
C 7525 6235 0 0 0.00% 0.00%
D 7525 6235 485 485 6.45% 7.78%

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 0 253 27341 161.1 834 820 164.6
A 15 223 10436 58.41 834 820 164.6
A 0 226 7362 39.74 834 820 164.6
B 4 48 42222 267.95 833 815 154.5
B 3 64 38858 246.18 833 815 154.5
B 12 111 17073 105.21 833 815 154.5
C 14 238 128943 699.22 808 813 183.2
C 3 233 44514 238.48 808 813 183.2
C 7 247 6345 30.19 808 813 183.2
D 1 52 1464898 7255.03 769 752 201.8
D 13 172 45566 222.06 769 752 201.8
D 2 234 20392 97.32 769 752 201.8

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