ASTROSAT CZTI

Data Quality Report

Orbit 44842

Creation date: 2024-06-27T23:07:07.103499
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_017T01_9000006028_44842cztM0_level2.fits modeM0/AS1A13_017T01_9000006028_44842cztM0_level2_quad_clean.evt
Size (bytes)561,833,280116,228,160
Size535.8 MB 110.8 MB
Events in quadrant A5,276,089784,552
Events in quadrant B4,021,149806,438
Events in quadrant C4,493,700734,340
Events in quadrant D6,430,497677,410

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222121
B0170711
C0190131
D0243831

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7428730.982768%
B74281051.413570%
C74284025.411955%
D74285026.758212%

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 7463 7429 13 13 0.17% 0.17%
B 7463 7429 40 40 0.54% 0.54%
C 7463 7429 290 290 3.89% 3.90%
D 7463 7429 374 374 5.01% 5.03%

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 2078646 12217.17 810 792 170.1
A 13 248 46310 267.63 810 792 170.1
A 13 254 9698 52.36 810 792 170.1
B 5 255 406331 2499.02 809 781 162.3
B 0 155 297181 1826.43 809 781 162.3
B 5 172 27721 166.01 809 781 162.3
C 12 2 921857 5088.8 769 774 181.0
C 14 254 541455 2987.15 769 774 181.0
C 9 54 10308 52.67 769 774 181.0
D 11 241 1818758 9330.66 771 745 194.8
D 1 52 496258 2543.14 771 745 194.8
D 5 235 415317 2127.72 771 745 194.8

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