ASTROSAT CZTI

Data Quality Report

Orbit 08909

Creation date: 2024-06-27T15:38:51.582143
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/AS1A03_092T01_9000001240_08909cztM0_level2.evt modeM0/AS1A03_092T01_9000001240_08909cztM0_level2_quad_clean.evt
Size (bytes)936,817,920171,371,520
Size893.4 MB 163.4 MB
Events in quadrant A7,689,0811,077,624
Events in quadrant B7,158,8391,078,664
Events in quadrant C5,850,0281,063,799
Events in quadrant D6,762,7901,040,396

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02740
B02740
C02740
D02740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0315474
B0302653
C0272323
D0290553

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A134631320.980465%
B134632922.168907%
C13463320.237688%
D13463580.430810%

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 15043 13466 63 63 0.42% 0.47%
B 15043 13465 170 170 1.13% 1.26%
C 15043 13466 0 0 0.00% 0.00%
D 15043 13466 22 22 0.15% 0.16%

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 8 5 1605268 5064.75 1549 1516 316.6
A 15 174 53604 164.5 1549 1516 316.6
A 5 16 28454 85.07 1549 1516 316.6
B 10 16 843873 2843.35 1550 1510 296.3
B 0 214 80698 267.3 1550 1510 296.3
B 0 219 76421 252.86 1550 1510 296.3
C 13 61 11446 28.72 1497 1503 346.2
C 1 3 5916 12.74 1497 1503 346.2
C 9 68 5482 11.49 1497 1503 346.2
D 8 195 476364 1187.7 1492 1453 399.9
D 1 52 178577 442.97 1492 1453 399.9
D 2 14 145847 361.11 1492 1453 399.9

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