ASTROSAT CZTI

Data Quality Report

Orbit 33891

Creation date: 2024-06-27T20:53:50.660832
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/AS1T04_090T01_9000004840_33891cztM0_level2.evt modeM0/AS1T04_090T01_9000004840_33891cztM0_level2_quad_clean.evt
Size (bytes)613,232,64069,523,200
Size584.8 MB 66.3 MB
Events in quadrant A3,333,058445,811
Events in quadrant B3,600,296434,976
Events in quadrant C3,406,367443,549
Events in quadrant D7,836,648372,119

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137973
B0144322
C0135242
D0274482

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58423455.905512%
B58422203.765834%
C58421462.499144%
D5842157326.925710%

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 7215 5843 263 263 3.65% 4.50%
B 7215 5843 152 152 2.11% 2.60%
C 7215 5843 96 96 1.33% 1.64%
D 7215 5843 1388 1388 19.24% 23.75%

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 15 169 789296 6031.91 650 637 130.7
A 13 6 17207 126.73 650 637 130.7
A 10 83 11746 84.97 650 637 130.7
B 5 172 644545 5004.04 666 649 128.7
B 5 207 67498 519.52 666 649 128.7
B 4 232 53242 408.73 666 649 128.7
C 0 10 446632 2916.99 654 658 152.9
C 15 214 253347 1652.76 654 658 152.9
C 3 233 115484 751.04 654 658 152.9
D 1 52 2221766 15039.75 595 577 147.7
D 8 195 1490893 10090.98 595 577 147.7
D 12 235 978361 6620.61 595 577 147.7

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