ASTROSAT CZTI

Data Quality Report

Orbit 40041

Creation date: 2024-06-27T22:11:35.923313
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_054T03_9000005516_40041cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_40041cztM0_level2_quad_clean.evt
Size (bytes)351,388,80093,850,560
Size335.1 MB 89.5 MB
Events in quadrant A2,824,868632,092
Events in quadrant B2,386,660664,463
Events in quadrant C4,171,023618,493
Events in quadrant D3,218,471561,056

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115373
B0105912
C0159442
D0132482

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A522090.172414%
B522070.134100%
C52201292.471264%
D5220881.685824%

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 7372 5221 4 4 0.05% 0.08%
B 7372 5221 1 1 0.01% 0.02%
C 7372 5221 107 107 1.45% 2.05%
D 7372 5221 71 71 0.96% 1.36%

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 451327 3772.56 588 576 119.5
A 12 189 46713 386.14 588 576 119.5
A 10 255 21244 172.98 588 576 119.5
B 0 221 46950 412.02 590 576 112.6
B 0 230 16302 139.72 590 576 112.6
B 12 111 13463 114.5 590 576 112.6
C 9 187 1604207 12087.28 569 574 132.7
C 15 214 215820 1622.4 569 574 132.7
C 14 254 57710 430.66 569 574 132.7
D 12 227 717928 5237.82 561 546 137.0
D 1 47 140520 1021.99 561 546 137.0
D 13 249 104035 755.6 561 546 137.0

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