ASTROSAT CZTI

Data Quality Report

Orbit 24980

Creation date: 2024-06-27T19:12:16.974997
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/AS1A08_003T18_9000003658_24980cztM0_level2.evt modeM0/AS1A08_003T18_9000003658_24980cztM0_level2_quad_clean.evt
Size (bytes)759,182,400119,479,680
Size724.0 MB 113.9 MB
Events in quadrant A4,608,930759,830
Events in quadrant B4,865,273769,890
Events in quadrant C4,837,230725,182
Events in quadrant D8,025,932692,749

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01980
B01980
C01980
D01980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0201362
B0206812
C0205654
D0305712

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9672920.951199%
B96721101.137304%
C96711851.912936%
D96725445.624483%

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 11692 9674 0 0 0.00% 0.00%
B 11692 9674 15 15 0.13% 0.16%
C 11692 9674 26 26 0.22% 0.27%
D 11692 9674 413 413 3.53% 4.27%

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 13 254 13324 50.63 1193 1168 240.1
A 3 137 10796 40.1 1193 1168 240.1
A 0 226 10162 37.46 1193 1168 240.1
B 10 246 87795 387.34 1187 1158 223.7
B 3 64 66408 291.72 1187 1158 223.7
B 0 190 31319 134.84 1187 1158 223.7
C 14 238 180754 668.05 1141 1149 268.9
C 0 10 100397 369.16 1141 1149 268.9
C 7 247 84048 308.35 1141 1149 268.9
D 7 238 1660971 5992.74 1139 1109 277.0
D 10 70 836885 3017.47 1139 1109 277.0
D 1 52 819353 2954.18 1139 1109 277.0

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