ASTROSAT CZTI

Data Quality Report

Orbit 17816

Creation date: 2024-06-27T17:41:14.827164
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/AS1A05_015T01_9000002650_17816cztM0_level2.evt modeM0/AS1A05_015T01_9000002650_17816cztM0_level2_quad_clean.evt
Size (bytes)502,911,360101,856,960
Size479.6 MB 97.1 MB
Events in quadrant A3,357,474657,480
Events in quadrant B3,690,189673,334
Events in quadrant C3,481,392653,910
Events in quadrant D4,249,117635,405

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143912
B0153812
C0147382
D0172492

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6670791.184408%
B66711422.128616%
C66711342.008694%
D66703184.767616%

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 9085 6672 0 0 0.00% 0.00%
B 9086 6673 32 32 0.35% 0.48%
C 9086 6673 0 0 0.00% 0.00%
D 9085 6672 174 174 1.92% 2.61%

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 0 226 7699 38.95 872 854 175.7
A 12 194 6537 32.34 872 854 175.7
A 15 174 6495 32.1 872 854 175.7
B 6 36 67839 407.84 876 857 164.2
B 0 229 52565 314.84 876 857 164.2
B 10 245 38358 228.34 876 857 164.2
C 14 238 133290 674.34 849 856 196.4
C 3 233 19010 92.44 849 856 196.4
C 5 218 13924 66.54 849 856 196.4
D 7 238 590782 2942.62 840 822 200.5
D 2 165 253642 1261.02 840 822 200.5
D 10 70 146343 725.83 840 822 200.5

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