ASTROSAT CZTI

Data Quality Report

Orbit 36747

Creation date: 2024-06-27T21:31:07.319838
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/AS1A11_101T01_9000005238_36747cztM0_level2.evt modeM0/AS1A11_101T01_9000005238_36747cztM0_level2_quad_clean.evt
Size (bytes)1,534,305,600186,399,360
Size1.4 GB 177.8 MB
Events in quadrant A7,607,2941,199,363
Events in quadrant B10,625,9711,181,636
Events in quadrant C9,770,5801,141,025
Events in quadrant D17,414,7901,048,766

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0326675
B0417814
C0386874
D0623624

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0510
B0510
C0510
D0520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15556290.186423%
B155568825.669838%
C155565773.709180%
D15556311520.024428%

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 19735 15559 10 10 0.05% 0.06%
B 19735 15559 433 433 2.19% 2.78%
C 19735 15559 442 442 2.24% 2.84%
D 19735 15559 2930 2930 14.85% 18.83%

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 568345 1592.4 1765 1727 355.8
A 7 3 145205 403.22 1765 1727 355.8
A 13 254 26060 68.38 1765 1727 355.8
B 5 200 2076855 6197.4 1739 1694 334.8
B 4 171 680280 2026.58 1739 1694 334.8
B 0 213 241367 715.78 1739 1694 334.8
C 14 254 1850567 4758.48 1679 1691 388.5
C 15 214 648061 1663.57 1679 1691 388.5
C 0 10 331520 848.89 1679 1691 388.5
D 12 227 8756647 22586.24 1580 1536 387.6
D 12 6 1032012 2658.4 1580 1536 387.6
D 13 171 474794 1220.9 1580 1536 387.6

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