ASTROSAT CZTI

Data Quality Report

Orbit 25090

Creation date: 2024-06-27T19:13:43.259707
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/AS1T03_206T01_9000003672_25090cztM0_level2.evt modeM0/AS1T03_206T01_9000003672_25090cztM0_level2_quad_clean.evt
Size (bytes)795,119,04080,844,480
Size758.3 MB 77.1 MB
Events in quadrant A3,723,404509,287
Events in quadrant B3,682,871519,398
Events in quadrant C10,470,566417,136
Events in quadrant D5,689,187472,502

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015477
B015477
C015477
D015477

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156100
B0156900
C0362610
D0220810

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76031662.183349%
B76031872.459555%
C7604282937.204103%
D76032933.853742%

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 7848 7603 0 0 0.00% 0.00%
B 7848 7604 2 2 0.03% 0.03%
C 7849 7604 1847 1847 23.53% 24.29%
D 7848 7603 99 99 1.26% 1.30%

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 17 116535 607.38 935 912 190.4
A 13 254 12413 60.41 935 912 190.4
A 3 137 8728 41.06 935 912 190.4
B 12 111 22358 118.53 934 906 181.0
B 11 111 20192 106.56 934 906 181.0
B 14 111 17564 92.04 934 906 181.0
C 7 247 7216714 38593.41 795 799 187.0
C 14 238 125283 665.79 795 799 187.0
C 7 226 18587 95.14 795 799 187.0
D 8 195 756357 3440.13 895 867 219.6
D 12 33 695199 3161.65 895 867 219.6
D 1 52 406979 1849.24 895 867 219.6

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