ASTROSAT CZTI

Data Quality Report

Orbit 39261

Creation date: 2024-06-27T22:02:25.239052
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_093T02_9000005452_39261cztM0_level2.fits modeM0/AS1A12_093T02_9000005452_39261cztM0_level2_quad_clean.evt
Size (bytes)546,747,84074,165,760
Size521.4 MB 70.7 MB
Events in quadrant A2,670,813587,117
Events in quadrant B2,930,960590,885
Events in quadrant C2,486,625565,840
Events in quadrant D11,756,047146,957

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108522
B0119281
C0103161
D0384231

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A506790.177620%
B50671212.388001%
C506740.078942%
D5067390176.988356%

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 7009 5068 2 2 0.03% 0.04%
B 7009 5068 80 80 1.14% 1.58%
C 7009 5068 0 0 0.00% 0.00%
D 7009 5068 3483 3483 49.69% 68.73%

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 422129 3581.29 581 570 117.7
A 13 254 6870 53.52 581 570 117.7
A 3 137 6200 47.83 581 570 117.7
B 5 172 473410 4288.38 570 555 110.3
B 5 255 88289 795.67 570 555 110.3
B 5 184 83325 750.65 570 555 110.3
C 15 214 232979 1748.67 566 570 132.9
C 3 233 29542 217.99 566 570 132.9
C 0 10 6343 43.44 566 570 132.9
D 12 235 9653583 113987.61 335 324 84.7
D 12 227 246176 2903.07 335 324 84.7
D 12 233 183275 2160.32 335 324 84.7

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