ASTROSAT CZTI

Data Quality Report

Orbit 37418

Creation date: 2024-06-27T21:39:44.022157
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/AS1A09_002T01_9000005322_37418cztM0_level2.evt modeM0/AS1A09_002T01_9000005322_37418cztM0_level2_quad_clean.evt
Size (bytes)390,352,32063,270,720
Size372.3 MB 60.3 MB
Events in quadrant A2,802,745390,718
Events in quadrant B2,796,412400,414
Events in quadrant C3,015,725392,537
Events in quadrant D2,861,669376,018

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113573
B0113812
C0117882
D0117012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5078210.413549%
B5078571.122489%
C5078941.851122%
D5078380.748326%

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 7081 5079 14 14 0.20% 0.28%
B 7081 5079 30 30 0.42% 0.59%
C 7081 5079 86 86 1.21% 1.69%
D 7081 5079 32 32 0.45% 0.63%

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 264500 2153.08 616 606 122.6
A 15 222 58624 473.36 616 606 122.6
A 13 248 31098 248.78 616 606 122.6
B 5 172 159249 1375.05 616 603 115.4
B 5 255 102577 883.85 616 603 115.4
B 0 155 43701 373.55 616 603 115.4
C 14 254 293139 2114.47 604 610 138.3
C 15 214 215435 1552.81 604 610 138.3
C 0 10 135022 971.56 604 610 138.3
D 2 249 212487 1486.28 602 587 142.6
D 12 235 174315 1218.54 602 587 142.6
D 2 153 44976 311.35 602 587 142.6

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