ASTROSAT CZTI

Data Quality Report

Orbit 31483

Creation date: 2024-06-27T20:29:06.172718
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/AS1T04_028T01_9000004584_31483cztM0_level2.evt modeM0/AS1T04_028T01_9000004584_31483cztM0_level2_quad_clean.evt
Size (bytes)606,458,88085,867,200
Size578.4 MB 81.9 MB
Events in quadrant A3,497,059559,877
Events in quadrant B6,855,693571,546
Events in quadrant C3,554,338535,102
Events in quadrant D4,055,957516,857

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01222
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014137150
B024414253
C014166162
D016169229

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59741061.774356%
B5959106617.888908%
C59672303.854533%
D59671292.161890%

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 7408 5997 84 84 1.13% 1.40%
B 7407 5986 943 943 12.73% 15.75%
C 7369 5985 141 141 1.91% 2.36%
D 7356 5986 127 127 1.73% 2.12%

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 13 415554 2618.81 799 785 158.4
A 13 254 10530 61.53 799 785 158.4
A 3 137 7654 43.37 799 785 158.4
B 12 1 2463275 17877.38 727 711 137.7
B 6 159 1472307 10683.29 727 711 137.7
B 0 230 28408 201.07 727 711 137.7
C 0 10 395515 2231.07 759 767 176.9
C 14 238 127608 716.89 759 767 176.9
C 3 233 48317 268.75 759 767 176.9
D 8 195 527244 2901.29 761 742 181.5
D 12 218 270209 1484.9 761 742 181.5
D 10 253 221304 1215.41 761 742 181.5

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