ASTROSAT CZTI

Data Quality Report

Orbit 38622

Creation date: 2024-06-27T21:54:14.306409
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/AS1A12_052T04_9000005388_38622cztM0_level2.fits modeM0/AS1A12_052T04_9000005388_38622cztM0_level2_quad_clean.evt
Size (bytes)2,075,806,080391,593,600
Size1.9 GB 373.5 MB
Events in quadrant A13,241,1572,806,218
Events in quadrant B15,418,6892,860,116
Events in quadrant C14,967,8732,737,271
Events in quadrant D31,496,7251,922,122

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520196
B0602085
C0581995
D01091525

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04540
B04540
C04540
D04540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0990
B0990
C0990
D0990

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A222564462.003954%
B222568043.612509%
C222568553.841661%
D22256583126.199676%

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 32060 22261 395 395 1.23% 1.77%
B 32060 22260 604 604 1.88% 2.71%
C 32060 22261 766 766 2.39% 3.44%
D 32060 22260 6191 6191 19.31% 27.81%

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 83 1534837 2944.15 2669 2619 520.4
A 15 223 877122 1680.35 2669 2619 520.4
A 13 248 196794 373.11 2669 2619 520.4
B 4 171 4050858 8280.13 2643 2579 488.9
B 5 172 357237 725.4 2643 2579 488.9
B 5 184 232262 469.78 2643 2579 488.9
C 14 254 3724370 6381.99 2583 2604 583.2
C 15 214 892709 1526.33 2583 2604 583.2
C 15 159 146400 246.58 2583 2604 583.2
D 12 227 10205207 17810.49 2381 2318 572.9
D 2 249 4299158 7500.7 2381 2318 572.9
D 1 47 2144799 3739.98 2381 2318 572.9

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