ASTROSAT CZTI

Data Quality Report

Orbit 17807

Creation date: 2024-06-27T17:41:08.744416
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_17807cztM0_level2.evt modeM0/AS1A05_015T01_9000002650_17807cztM0_level2_quad_clean.evt
Size (bytes)478,339,20098,112,960
Size456.2 MB 93.6 MB
Events in quadrant A3,312,728623,497
Events in quadrant B3,372,487637,588
Events in quadrant C3,356,180611,989
Events in quadrant D3,956,249597,691

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147761
B0147891
C0147111
D0170211

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71851201.670146%
B71861141.586418%
C71861111.544670%
D71861912.657946%

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 7510 7186 5 5 0.07% 0.07%
B 7511 7187 2 2 0.03% 0.03%
C 7511 7187 0 0 0.00% 0.00%
D 7511 7187 81 81 1.08% 1.13%

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 15 174 50422 286.53 849 830 173.1
A 0 226 7244 37.06 849 830 173.1
A 3 137 6549 33.04 849 830 173.1
B 12 111 19700 114.67 850 829 164.6
B 11 111 16921 97.78 850 829 164.6
B 14 111 14440 82.71 850 829 164.6
C 14 238 125410 651.75 812 813 191.2
C 5 218 33200 169.41 812 813 191.2
C 3 233 15948 79.17 812 813 191.2
D 7 238 753432 3846.33 815 794 195.7
D 10 70 39874 199.72 815 794 195.7
D 2 33 30304 150.81 815 794 195.7

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