ASTROSAT CZTI

Data Quality Report

Orbit 25096

Creation date: 2024-06-27T19:13:45.909829
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_25096cztM0_level2.evt modeM0/AS1T03_206T01_9000003672_25096cztM0_level2_quad_clean.evt
Size (bytes)550,869,12084,876,480
Size525.3 MB 80.9 MB
Events in quadrant A3,065,263558,292
Events in quadrant B3,365,830565,227
Events in quadrant C4,186,579524,800
Events in quadrant D5,642,867486,217

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012663
B012663
C012663
D012663

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130511
B0140381
C0164541
D0209661

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6240400.641026%
B6241851.361961%
C62401552.483974%
D624082913.285256%

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 7330 6240 0 0 0.00% 0.00%
B 7331 6242 31 31 0.42% 0.50%
C 7330 6240 29 29 0.40% 0.46%
D 7330 6240 586 586 7.99% 9.39%

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 78234 495.11 774 757 156.5
A 13 254 9490 55.81 774 757 156.5
A 0 226 6924 39.41 774 757 156.5
B 0 229 148306 999.33 773 753 147.7
B 5 172 89184 598.92 773 753 147.7
B 0 190 55264 369.19 773 753 147.7
C 7 247 1112250 6420.28 738 744 173.1
C 14 238 118112 677.94 738 744 173.1
C 2 16 46079 261.86 738 744 173.1
D 1 52 847670 4818.36 729 709 175.8
D 1 3 620080 3523.6 729 709 175.8
D 8 195 365730 2076.6 729 709 175.8

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