ASTROSAT CZTI

Data Quality Report

Orbit 40586

Creation date: 2024-06-27T22:17:53.654800
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_054T02_9000005550_40586cztM0_level2.fits modeM0/AS1A12_054T02_9000005550_40586cztM0_level2_quad_clean.evt
Size (bytes)300,061,44084,110,400
Size286.2 MB 80.2 MB
Events in quadrant A2,932,161590,164
Events in quadrant B2,495,215602,768
Events in quadrant C2,552,339579,223
Events in quadrant D2,698,170390,787

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123173
B0113302
C0111872
D0122882

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A548190.164204%
B5481220.401387%
C5481130.237183%
D5481157628.753877%

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 7125 5482 4 4 0.06% 0.07%
B 7125 5482 15 15 0.21% 0.27%
C 7125 5482 9 9 0.13% 0.16%
D 7124 5480 41 41 0.58% 0.75%

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 10 83 483270 3959.8 586 573 121.9
A 12 189 140334 1146.53 586 573 121.9
A 2 79 31755 255.8 586 573 121.9
B 5 255 88897 773.06 584 567 114.3
B 0 190 28868 247.69 584 567 114.3
B 3 112 23373 199.6 584 567 114.3
C 15 214 238760 1750.34 576 579 136.1
C 0 10 51460 373.91 576 579 136.1
C 3 233 12359 86.57 576 579 136.1
D 12 191 324385 2862.85 457 445 113.2
D 2 249 178738 1575.68 457 445 113.2
D 2 250 101100 889.55 457 445 113.2

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