ASTROSAT CZTI

Data Quality Report

Orbit 11602

Creation date: 2024-06-27T16:15:46.389976
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/AS1C03_020T01_9000001706_11602cztM0_level2.evt modeM0/AS1C03_020T01_9000001706_11602cztM0_level2_quad_clean.evt
Size (bytes)1,725,989,760167,241,600
Size1.6 GB 159.5 MB
Events in quadrant A20,042,466913,500
Events in quadrant B11,261,0071,036,672
Events in quadrant C6,793,3371,086,123
Events in quadrant D13,166,320991,715

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700464
B0434753
C0304443
D0494783

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03040
B03040
C03040
D03040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15001490332.684488%
B1500113539.019399%
C15001690.459969%
D15001160310.685954%

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 16992 15005 3281 3281 19.31% 21.87%
B 16992 15005 708 708 4.17% 4.72%
C 16992 15005 0 0 0.00% 0.00%
D 16992 15005 1258 1258 7.40% 8.38%

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 8 5 13211218 42367.64 1529 1495 311.8
A 1 162 314702 1004.55 1529 1495 311.8
A 1 178 181475 577.25 1529 1495 311.8
B 4 239 2221339 6647.62 1734 1690 333.9
B 10 16 1291624 3863.22 1734 1690 333.9
B 4 81 571600 1706.82 1734 1690 333.9
C 12 4 19007 42.73 1733 1741 404.0
C 13 61 12929 27.69 1733 1741 404.0
C 9 54 12347 26.25 1733 1741 404.0
D 1 52 4665679 11948.33 1615 1564 390.4
D 13 122 1688035 4320.33 1615 1564 390.4
D 10 253 284456 724.7 1615 1564 390.4

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