ASTROSAT CZTI

Data Quality Report

Orbit 19679

Creation date: 2024-06-27T18:05:27.614599
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/AS1A05_025T18_9000002932_19679cztM0_level2.evt modeM0/AS1A05_025T18_9000002932_19679cztM0_level2_quad_clean.evt
Size (bytes)1,052,138,880189,322,560
Size1003.4 MB 180.6 MB
Events in quadrant A6,855,7851,201,320
Events in quadrant B7,678,2131,208,901
Events in quadrant C7,942,6471,157,537
Events in quadrant D8,384,5031,142,749

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02980
B02980
C02980
D02980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0304902
B0324442
C0330192
D0348792

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A148382071.395067%
B148383232.176843%
C148383242.183583%
D148393612.432778%

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 15483 14838 6 6 0.04% 0.04%
B 15483 14838 73 73 0.47% 0.49%
C 15483 14839 5 5 0.03% 0.03%
D 15484 14841 228 228 1.47% 1.54%

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 5 16 67541 188.17 1746 1707 349.9
A 11 29 63485 176.58 1746 1707 349.9
A 0 226 15327 38.93 1746 1707 349.9
B 3 112 504871 1509.82 1736 1688 333.3
B 7 220 105700 312.09 1736 1688 333.3
B 0 197 93285 274.84 1736 1688 333.3
C 8 208 890840 2281.05 1678 1689 389.8
C 14 238 258348 658.44 1678 1689 389.8
C 3 233 167412 425.15 1678 1689 389.8
D 1 52 1160041 2823.67 1693 1646 410.2
D 12 218 461912 1121.93 1693 1646 410.2
D 1 20 147447 355.4 1693 1646 410.2

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