ASTROSAT CZTI

Data Quality Report

Orbit 39746

Creation date: 2024-06-27T22:08:30.654884
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_022T01_9000005494_39746cztM0_level2.fits modeM0/AS1A12_022T01_9000005494_39746cztM0_level2_quad_clean.evt
Size (bytes)345,977,28091,549,440
Size329.9 MB 87.3 MB
Events in quadrant A3,110,204614,324
Events in quadrant B2,644,320633,296
Events in quadrant C3,152,220594,132
Events in quadrant D3,468,005542,300

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126242
B0116441
C0128151
D0142611

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5548621.117520%
B5548370.666907%
C5548771.387888%
D55482023.640952%

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 7220 5549 44 44 0.61% 0.79%
B 7220 5549 21 21 0.29% 0.38%
C 7220 5549 80 80 1.11% 1.44%
D 7220 5549 155 155 2.15% 2.79%

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 457098 3695.76 610 597 123.5
A 15 174 144757 1167.1 610 597 123.5
A 6 10 74203 595.9 610 597 123.5
B 5 172 89516 756.89 604 588 117.5
B 5 255 87253 737.62 604 588 117.5
B 0 190 36674 307.14 604 588 117.5
C 9 187 398287 2878.33 588 591 138.2
C 15 214 229299 1655.28 588 591 138.2
C 4 0 147357 1062.22 588 591 138.2
D 12 227 821686 5728.95 585 569 143.3
D 12 233 149392 1038.34 585 569 143.3
D 2 250 110004 763.53 585 569 143.3

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