ASTROSAT CZTI

Data Quality Report

Orbit 08128

Creation date: 2024-06-27T15:28:22.479094
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/AS1A02_178T01_9000001118_08128cztM0_level2.evt modeM0/AS1A02_178T01_9000001118_08128cztM0_level2_quad_clean.evt
Size (bytes)797,578,560158,817,600
Size760.6 MB 151.5 MB
Events in quadrant A5,639,810989,524
Events in quadrant B6,118,1881,010,912
Events in quadrant C5,657,285992,149
Events in quadrant D5,892,375953,654

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02560
B02560
C02560
D02560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02556823
B02647817
C0255856
D02652614

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A124942161.728830%
B124972892.312555%
C125032231.783572%
D124992471.976158%

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 13005 12509 0 0 0.00% 0.00%
B 13005 12508 33 33 0.25% 0.26%
C 13005 12507 0 0 0.00% 0.00%
D 13004 12508 49 49 0.38% 0.39%

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 0 226 13689 41.03 1461 1426 298.9
A 12 194 13076 38.98 1461 1426 298.9
A 8 15 12214 36.1 1461 1426 298.9
B 10 16 206896 733.85 1471 1435 280.0
B 0 214 100424 353.56 1471 1435 280.0
B 0 219 44682 154.47 1471 1435 280.0
C 1 16 50311 147.55 1436 1438 331.2
C 13 61 10873 28.49 1436 1438 331.2
C 8 222 5914 13.51 1436 1438 331.2
D 1 52 141524 396.42 1417 1379 353.5
D 12 233 133048 372.45 1417 1379 353.5
D 13 122 91403 254.65 1417 1379 353.5

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