ASTROSAT CZTI

Data Quality Report

Orbit 31764

Creation date: 2024-06-27T20:32:27.526937
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/AS1A10_059T02_9000004636_31764cztM0_level2.evt modeM0/AS1A10_059T02_9000004636_31764cztM0_level2_quad_clean.evt
Size (bytes)670,559,04064,670,400
Size639.5 MB 61.7 MB
Events in quadrant A8,524,410296,623
Events in quadrant B4,146,902450,647
Events in quadrant C3,256,121438,537
Events in quadrant D4,026,223404,189

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012618
B012923
C012519
D012925

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0352846360
B0198113451
C0161803067
D0181162689

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5177297657.485030%
B52252094.000000%
C52812394.525658%
D52705169.791271%

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 6325 5207 1711 1711 27.05% 32.86%
B 6315 5278 38 38 0.60% 0.72%
C 7120 5369 44 44 0.62% 0.82%
D 7147 5349 340 340 4.76% 6.36%

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 0 13 6810692 74593.6 442 433 91.3
A 13 254 7005 71.98 442 433 91.3
A 14 238 6563 67.14 442 433 91.3
B 6 159 1447898 11705.41 627 609 123.6
B 5 172 148338 1194.8 627 609 123.6
B 0 229 37421 297.72 627 609 123.6
C 0 10 449141 3087.19 611 614 145.3
C 3 233 284855 1956.42 611 614 145.3
C 14 238 97961 670.03 611 614 145.3
D 13 249 949291 6583.1 596 578 144.1
D 8 195 402642 2789.91 596 578 144.1
D 12 218 232818 1611.51 596 578 144.1

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