ASTROSAT CZTI

Data Quality Report

Orbit 44651

Creation date: 2024-06-27T23:04:55.710452
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/AS1A13_072T01_9000006008_44651cztM0_level2.fits modeM0/AS1A13_072T01_9000006008_44651cztM0_level2_quad_clean.evt
Size (bytes)435,130,560107,441,280
Size415.0 MB 102.5 MB
Events in quadrant A4,916,292712,170
Events in quadrant B3,104,986745,843
Events in quadrant C3,081,350703,288
Events in quadrant D4,479,602621,207

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202301
B0141721
C0143591
D0182111

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67501612.385185%
B6751971.436824%
C6751260.385128%
D67513655.406606%

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 7305 6751 1 1 0.01% 0.01%
B 7306 6752 16 16 0.22% 0.24%
C 7306 6752 11 11 0.15% 0.16%
D 7306 6752 291 291 3.98% 4.31%

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 1785808 11694.54 732 715 152.6
A 15 223 235825 1540.26 732 715 152.6
A 10 248 32717 209.65 732 715 152.6
B 0 189 83342 573.26 732 710 144.1
B 0 246 31699 214.99 732 710 144.1
B 5 172 24150 162.62 732 710 144.1
C 12 2 162430 962.33 714 718 168.0
C 14 254 70138 413.11 714 718 168.0
C 2 14 54760 321.6 714 718 168.0
D 13 249 596626 3402.27 698 676 175.2
D 2 249 312730 1781.51 698 676 175.2
D 1 52 191035 1086.76 698 676 175.2

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