ASTROSAT CZTI

Data Quality Report

Orbit 24095

Creation date: 2024-06-27T19:02:03.980329
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/AS1T03_182T01_9000003560_24095cztM0_level2.evt modeM0/AS1T03_182T01_9000003560_24095cztM0_level2_quad_clean.evt
Size (bytes)925,531,20093,156,480
Size882.7 MB 88.8 MB
Events in quadrant A5,754,603501,781
Events in quadrant B6,182,956508,813
Events in quadrant C5,995,697488,266
Events in quadrant D9,269,114475,825

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350104
B035397
C0350104
D0347101

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0237
B0215
C0214
D0237

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03527710362
B03650110406
C03561210412
D04961013726

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12209250.204767%
B122701361.108394%
C122301010.825838%
D121597265.970886%

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 20137 12775 0 0 0.00% 0.00%
B 20140 12869 56 56 0.28% 0.44%
C 20115 12795 1 1 0.00% 0.01%
D 20030 12720 554 554 2.77% 4.36%

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 22610 70.79 1485 1454 298.9
A 2 250 19982 62.0 1485 1454 298.9
A 3 137 12996 38.62 1485 1454 298.9
B 0 245 161515 564.42 1488 1447 283.6
B 15 32 67062 231.37 1488 1447 283.6
B 5 172 44275 151.02 1488 1447 283.6
C 14 238 224005 655.82 1435 1443 339.4
C 7 247 88883 257.66 1435 1443 339.4
C 10 9 44636 127.28 1435 1443 339.4
D 12 218 1912326 5587.33 1407 1368 342.0
D 8 195 973971 2843.73 1407 1368 342.0
D 11 176 512614 1494.8 1407 1368 342.0

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