ASTROSAT CZTI

Data Quality Report

Orbit 16141

Creation date: 2024-06-27T17:18:35.047117
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/AS1T02_092T01_9000002384_16141cztM0_level2.evt modeM0/AS1T02_092T01_9000002384_16141cztM0_level2_quad_clean.evt
Size (bytes)507,945,60083,793,600
Size484.4 MB 79.9 MB
Events in quadrant A3,470,074546,766
Events in quadrant B3,426,302537,054
Events in quadrant C3,613,341509,355
Events in quadrant D4,450,497508,848

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143592
B0141491
C0150491
D0173431

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62311732.776440%
B6231961.540684%
C6231831.332049%
D62312483.980100%

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 7217 6233 88 88 1.22% 1.41%
B 7217 6233 41 41 0.57% 0.66%
C 7217 6233 0 0 0.00% 0.00%
D 7217 6233 223 223 3.09% 3.58%

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 15 174 548672 3604.57 752 738 152.0
A 13 248 21125 134.12 752 738 152.0
A 0 226 6799 39.87 752 738 152.0
B 7 220 166597 1156.92 750 733 143.4
B 5 65 163798 1137.39 750 733 143.4
B 0 189 42758 293.13 750 733 143.4
C 3 233 665098 3952.64 719 724 168.1
C 14 238 110329 652.09 719 724 168.1
C 0 207 22690 130.69 719 724 168.1
D 1 52 1364445 7036.89 720 705 193.8
D 7 38 137306 704.86 720 705 193.8
D 10 70 77324 395.35 720 705 193.8

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