ASTROSAT CZTI

Data Quality Report

Orbit 21409

Creation date: 2024-06-27T18:27:29.623098
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_140T01_9000003160_21409cztM0_level2.evt modeM0/AS1T03_140T01_9000003160_21409cztM0_level2_quad_clean.evt
Size (bytes)605,105,280116,058,240
Size577.1 MB 110.7 MB
Events in quadrant A3,714,750793,591
Events in quadrant B3,588,376793,618
Events in quadrant C3,589,159757,484
Events in quadrant D6,983,727706,885

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153812
B0148372
C0147402
D0255794

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66421151.731406%
B66421271.912075%
C66421482.228245%
D66416579.893088%

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 7858 6642 1 1 0.01% 0.02%
B 7858 6642 11 11 0.14% 0.17%
C 7858 6642 2 2 0.03% 0.03%
D 7857 6641 668 668 8.50% 10.06%

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 5 168 195461 1088.09 898 884 178.8
A 11 47 48479 266.16 898 884 178.8
A 13 254 10604 54.36 898 884 178.8
B 0 230 37238 217.97 881 861 166.9
B 0 190 28282 164.31 881 861 166.9
B 6 36 20869 119.89 881 861 166.9
C 3 233 171026 875.92 839 844 194.3
C 14 238 135182 691.43 839 844 194.3
C 0 236 10604 50.23 839 844 194.3
D 12 235 2339869 11471.6 845 824 203.9
D 1 52 490874 2403.4 845 824 203.9
D 1 20 365449 1788.27 845 824 203.9

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