ASTROSAT CZTI

Data Quality Report

Orbit 20160720_G05_230T02_9000000548_level2

Creation date: 2025-11-03T17:49:27.317352
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/AS1G05_230T02_9000000548cztM0_level2.fits modeM0/AS1G05_230T02_9000000548cztM0_level2_quad_clean.evt
Size (bytes)1,000,558,0801,143,722,880
Size954.2 MB 1.1 GB
Events in quadrant A5,971,9967,047,421
Events in quadrant B5,719,5466,947,937
Events in quadrant C5,852,2526,729,348
Events in quadrant D5,077,7186,237,370

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01530
B01520
C01520
D01530

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022860
B022860
C022860
D022860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02308970
B02457730
C02416300
D02593420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11203213471.202335%
B11203421481.917275%
C11203315541.387091%
D11203321461.915507%

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 127103 112020 0 0 0.00% 0.00%
B 127103 112022 0 0 0.00% 0.00%
C 127102 112020 0 0 0.00% 0.00%
D 127102 112019 0 0 0.00% 0.00%

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 14 188 5892 11.31 1550 1444 393.5
A 0 29 5824 11.13 1550 1444 393.5
A 14 204 5049 9.16 1550 1444 393.5
B 2 9 5012 11.66 1512 1438 306.5
B 12 226 4144 8.83 1512 1438 306.5
B 14 254 3922 8.1 1512 1438 306.5
C 1 80 4232 6.85 1545 1432 408.9
C 1 81 4198 6.76 1545 1432 408.9
C 12 241 4155 6.66 1545 1432 408.9
D 11 82 4305 7.58 1449 1313 394.6
D 6 231 3922 6.61 1449 1313 394.6
D 3 14 3918 6.6 1449 1313 394.6

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