ASTROSAT CZTI

Data Quality Report

Orbit 49683

Creation date: 2024-12-10T13:57:25.641706
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/AS1T05_233T01_9000006438_49683cztM0_level2.fits modeM0/AS1T05_233T01_9000006438_49683cztM0_level2_quad_clean.evt
Size (bytes)1,303,571,52053,766,720
Size1.2 GB 51.3 MB
Events in quadrant A16,934,168304,903
Events in quadrant B4,703,945694,107
Events in quadrant C9,194,65922,556
Events in quadrant D16,893,611121,492

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0549340
B0187190
C0320970
D0548270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6816665297.593897%
B68173425.016870%
C68176817100.000000%
D6817680099.750623%

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 7375 6815 5923 5923 80.31% 86.91%
B 7377 6818 138 138 1.87% 2.02%
C 7376 6816 365 365 4.95% 5.36%
D 7376 6816 6365 6365 86.29% 93.38%

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 10 83 5446010 50607.73 369 355 107.6
A 3 130 2792581 25948.8 369 355 107.6
A 4 60 1103878 10255.29 369 355 107.6
B 10 128 488478 3186.51 723 702 153.1
B 10 44 319193 2080.61 723 702 153.1
B 10 247 155301 1009.95 723 702 153.1
C 15 180 2457917 115007.37 44 42 21.4
C 15 190 1714885 80239.87 44 42 21.4
C 15 181 834099 39026.68 44 42 21.4
D 15 40 3178873 45159.36 172 162 70.4
D 7 45 2092766 29729.24 172 162 70.4
D 15 171 1731064 24590.6 172 162 70.4

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