ASTROSAT CZTI

Data Quality Report

Orbit 36251

Creation date: 2022-06-13T14:00:52.942928
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/AS1A10_071T37_9000005180_36251cztM0_level2.evt modeM0/AS1A10_071T37_9000005180_36251cztM0_level2_quad_clean.evt
Size (bytes)604,584,00065,188,800
Size576.6 MB 62.2 MB
Events in quadrant A2,822,466410,999
Events in quadrant B4,563,527401,015
Events in quadrant C3,470,586405,069
Events in quadrant D7,057,416347,779

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119723
B0173732
C0137102
D0248532

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A584260.102705%
B58424848.284834%
C58421342.293735%
D5842147025.162616%

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 8856 5844 0 0 0.00% 0.00%
B 8856 5844 338 338 3.82% 5.78%
C 8856 5844 120 120 1.36% 2.05%
D 8856 5844 1387 1387 15.66% 23.73%

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 181601 1306.17 677 663 138.5
A 13 6 11408 77.57 677 663 138.5
A 13 254 9804 65.99 677 663 138.5
B 5 172 1178745 9335.17 654 635 126.2
B 5 236 293912 2323.88 654 635 126.2
B 4 171 283035 2237.7 654 635 126.2
C 0 10 623900 4070.56 653 657 153.1
C 15 214 244812 1594.64 653 657 153.1
C 0 207 52051 335.67 653 657 153.1
D 12 227 2767307 19076.23 587 570 145.0
D 2 250 1324006 9124.89 587 570 145.0
D 12 6 463251 3190.12 587 570 145.0

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