ASTROSAT CZTI

Data Quality Report

Orbit 16484

Creation date: 2024-06-27T17:23:22.688569
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/AS1A05_108T01_9000002438_16484cztM0_level2.evt modeM0/AS1A05_108T01_9000002438_16484cztM0_level2_quad_clean.evt
Size (bytes)466,974,72092,419,200
Size445.3 MB 88.1 MB
Events in quadrant A3,132,350600,530
Events in quadrant B3,449,347618,381
Events in quadrant C4,136,982569,178
Events in quadrant D2,991,296566,342

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134493
B0143542
C0164382
D0133512

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6365370.581304%
B6365570.895522%
C63652093.283582%
D6365230.361351%

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 7581 6366 2 2 0.03% 0.03%
B 7581 6366 4 4 0.05% 0.06%
C 7581 6366 29 29 0.38% 0.46%
D 7581 6366 11 11 0.15% 0.17%

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 15 174 106052 666.93 787 773 157.9
A 0 226 6849 38.49 787 773 157.9
A 3 137 5774 31.68 787 773 157.9
B 0 189 89327 591.33 793 775 149.7
B 15 35 83885 554.99 793 775 149.7
B 0 198 51267 337.18 793 775 149.7
C 3 233 1043451 6007.06 745 749 173.6
C 14 238 116821 668.7 745 749 173.6
C 7 247 72597 413.92 745 749 173.6
D 13 249 32919 173.54 755 732 185.5
D 12 218 32817 172.99 755 732 185.5
D 2 234 27899 146.47 755 732 185.5

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