ASTROSAT CZTI

Data Quality Report

Orbit 13459

Creation date: 2024-06-27T16:41:06.850326
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/AS1A04_103T01_9000001988_13459cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13459cztM0_level2_quad_clean.evt
Size (bytes)482,751,36066,481,920
Size460.4 MB 63.4 MB
Events in quadrant A3,246,384398,865
Events in quadrant B3,243,603406,647
Events in quadrant C3,177,239399,650
Events in quadrant D4,526,852369,524

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135473
B0135932
C0134662
D0175932

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6274981.562002%
B62741061.689512%
C6274841.338859%
D62743856.136436%

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 8605 6275 0 0 0.00% 0.00%
B 8605 6275 1 1 0.01% 0.02%
C 8605 6275 1 1 0.01% 0.02%
D 8605 6275 272 272 3.16% 4.33%

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 2 250 66868 401.99 821 803 164.3
A 1 162 12654 72.11 821 803 164.3
A 0 226 7348 39.83 821 803 164.3
B 4 173 27400 174.79 815 796 152.2
B 3 209 19522 123.03 815 796 152.2
B 12 111 17696 111.03 815 796 152.2
C 3 233 31444 167.48 799 802 183.0
C 10 9 30368 161.6 799 802 183.0
C 13 61 5792 27.27 799 802 183.0
D 13 249 1184301 6369.17 780 757 185.8
D 8 195 211899 1136.25 780 757 185.8
D 14 34 97614 521.23 780 757 185.8

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