ASTROSAT CZTI

Data Quality Report

Orbit 25479

Creation date: 2024-06-27T19:18:08.823939
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/AS1C05_012T07_9000003718_25479cztM0_level2.evt modeM0/AS1C05_012T07_9000003718_25479cztM0_level2_quad_clean.evt
Size (bytes)493,007,040134,596,800
Size470.2 MB 128.4 MB
Events in quadrant A3,241,699921,668
Events in quadrant B3,390,224925,248
Events in quadrant C3,284,646885,532
Events in quadrant D4,543,249861,301

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141250
B0144740
C0141710
D0180520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6928861.241339%
B6928871.255774%
C69281251.804273%
D69282153.103349%

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 7448 6929 0 0 0.00% 0.00%
B 7448 6929 5 5 0.07% 0.07%
C 7448 6929 0 0 0.00% 0.00%
D 7448 6929 135 135 1.81% 1.95%

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 13 254 11341 62.48 839 822 168.3
A 3 137 7573 40.1 839 822 168.3
A 0 226 7260 38.24 839 822 168.3
B 0 229 96613 622.35 825 806 153.9
B 0 190 38323 243.71 825 806 153.9
B 12 111 18716 116.34 825 806 153.9
C 14 238 129940 696.09 799 805 185.5
C 7 87 20851 108.06 799 805 185.5
C 2 16 11491 57.6 799 805 185.5
D 1 52 790811 4095.36 805 781 192.9
D 7 38 210837 1088.89 805 781 192.9
D 8 195 153336 790.82 805 781 192.9

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