ASTROSAT CZTI

Data Quality Report

Orbit 36973

Creation date: 2024-06-27T21:33:45.735074
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_001T10_9000005252_36973cztM0_level2.evt modeM0/AS1C07_001T10_9000005252_36973cztM0_level2_quad_clean.evt
Size (bytes)407,208,96065,145,600
Size388.3 MB 62.1 MB
Events in quadrant A1,975,622435,393
Events in quadrant B4,519,329397,524
Events in quadrant C2,196,671440,840
Events in quadrant D3,352,206399,616

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A087741
B0162911
C092611
D0129501

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4246110.259067%
B424670116.509656%
C4246290.682996%
D42464229.938766%

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 4246 4246 8 8 0.19% 0.19%
B 4246 4246 547 547 12.88% 12.88%
C 4246 4246 22 22 0.52% 0.52%
D 4246 4246 408 408 9.61% 9.61%

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 151760 1628.1 460 452 92.9
A 13 248 21372 225.1 460 452 92.9
A 13 6 10560 108.76 460 452 92.9
B 5 184 2195050 26461.28 435 424 82.9
B 5 200 148641 1787.1 435 424 82.9
B 0 229 101900 1223.53 435 424 82.9
C 15 214 179785 1707.32 453 456 105.0
C 14 254 119327 1131.72 453 456 105.0
C 0 10 83149 787.29 453 456 105.0
D 12 17 1263225 11525.27 430 419 109.6
D 4 239 157520 1433.82 430 419 109.6
D 2 153 66687 604.81 430 419 109.6

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