ASTROSAT CZTI

Data Quality Report

Orbit 41865

Creation date: 2024-06-27T22:33:47.730909
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/AS1C07_001T11_9000005710_41865cztM0_level2.fits modeM0/AS1C07_001T11_9000005710_41865cztM0_level2_quad_clean.evt
Size (bytes)343,342,08086,996,160
Size327.4 MB 83.0 MB
Events in quadrant A3,307,413592,647
Events in quadrant B2,469,961610,490
Events in quadrant C3,086,216550,469
Events in quadrant D3,458,401532,217

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128692
B0106492
C0120812
D0135922

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49761392.793408%
B4976681.366559%
C49762595.204984%
D49761322.652733%

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 4977 114 114 1.63% 2.29%
B 7009 4977 38 38 0.54% 0.76%
C 7009 4977 264 264 3.77% 5.30%
D 7009 4977 121 121 1.73% 2.43%

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 14 24 580870 5149.03 560 550 112.7
A 10 83 531785 4713.51 560 550 112.7
A 2 79 11275 95.16 560 550 112.7
B 15 85 133421 1256.23 557 542 105.8
B 5 255 50315 470.55 557 542 105.8
B 0 245 43289 404.12 557 542 105.8
C 0 10 814347 6718.71 524 528 121.1
C 15 214 198238 1632.25 524 528 121.1
C 2 16 27682 224.18 524 528 121.1
D 12 79 534038 4112.78 540 527 129.7
D 13 249 280220 2156.12 540 527 129.7
D 2 249 197008 1514.65 540 527 129.7

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