ASTROSAT CZTI

Data Quality Report

Orbit 14236

Creation date: 2024-06-27T16:52:19.404964
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/AS1G08_069T01_9000002102_14236cztM0_level2.evt modeM0/AS1G08_069T01_9000002102_14236cztM0_level2_quad_clean.evt
Size (bytes)499,777,92082,080,000
Size476.6 MB 78.3 MB
Events in quadrant A2,857,009548,661
Events in quadrant B2,990,915534,899
Events in quadrant C2,989,276512,616
Events in quadrant D5,878,273456,991

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126572
B0130731
C0128021
D0216001

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6190100.161551%
B6190260.420032%
C619090.145396%
D619098115.848142%

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 6661 6192 0 0 0.00% 0.00%
B 6661 6192 1 1 0.02% 0.02%
C 6661 6192 2 2 0.03% 0.03%
D 6661 6192 849 849 12.75% 13.71%

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 12 189 21393 138.28 731 715 149.5
A 8 15 18930 121.81 731 715 149.5
A 0 226 6394 37.97 731 715 149.5
B 0 229 66994 466.09 727 706 142.2
B 4 97 30902 212.32 727 706 142.2
B 0 189 30461 209.22 727 706 142.2
C 3 233 226136 1372.77 706 710 164.2
C 14 234 9848 55.65 706 710 164.2
C 13 61 4968 25.93 706 710 164.2
D 12 110 1301754 7812.73 653 635 166.5
D 5 222 1147483 6886.39 653 635 166.5
D 1 52 386996 2319.95 653 635 166.5

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