ASTROSAT CZTI

Data Quality Report

Orbit 36552

Creation date: 2024-06-27T21:28:18.882188
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/AS1A11_089T02_9000005216_36552cztM0_level2.evt modeM0/AS1A11_089T02_9000005216_36552cztM0_level2_quad_clean.evt
Size (bytes)417,772,80089,752,320
Size398.4 MB 85.6 MB
Events in quadrant A2,648,966615,329
Events in quadrant B3,116,942603,720
Events in quadrant C2,823,444586,908
Events in quadrant D3,725,750563,880

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108423
B0123062
C0112242
D0146852

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4964150.302176%
B49641392.800161%
C49641202.417405%
D49641262.538276%

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 7088 4965 3 3 0.04% 0.06%
B 7088 4965 88 88 1.24% 1.77%
C 7088 4965 70 70 0.99% 1.41%
D 7088 4965 97 97 1.37% 1.95%

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 198606 1597.2 616 604 124.0
A 9 143 33636 266.46 616 604 124.0
A 15 223 31666 250.56 616 604 124.0
B 5 172 496715 4343.72 596 581 114.2
B 5 255 108259 942.74 596 581 114.2
B 0 219 50059 433.19 596 581 114.2
C 0 10 311170 2309.31 579 585 134.5
C 15 214 214181 1588.16 579 585 134.5
C 10 49 17930 128.97 579 585 134.5
D 12 235 697611 4878.75 587 572 142.9
D 2 153 154358 1076.39 587 572 142.9
D 10 199 123468 860.18 587 572 142.9

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