ASTROSAT CZTI

Data Quality Report

Orbit 41150

Creation date: 2024-06-27T22:25:05.242815
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/AS1A12_025T12_9000005604_41150cztM0_level2.fits modeM0/AS1A12_025T12_9000005604_41150cztM0_level2_quad_clean.evt
Size (bytes)437,878,080119,957,760
Size417.6 MB 114.4 MB
Events in quadrant A3,924,012803,779
Events in quadrant B3,595,714820,833
Events in quadrant C4,400,139774,608
Events in quadrant D3,717,041720,648

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160804
B0154942
C0175002
D0163862

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7358140.190269%
B7358380.516445%
C7358630.856211%
D7358821.114433%

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 10284 7361 7 7 0.07% 0.10%
B 10284 7361 29 29 0.28% 0.39%
C 10284 7361 52 52 0.51% 0.71%
D 10284 7361 67 67 0.65% 0.91%

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 624547 3647.52 833 815 171.0
A 2 79 47111 270.73 833 815 171.0
A 12 189 27041 153.37 833 815 171.0
B 7 202 148772 910.24 822 799 162.6
B 0 245 126155 771.11 822 799 162.6
B 5 255 58640 355.8 822 799 162.6
C 9 54 682582 3596.4 806 810 189.6
C 15 214 310943 1635.98 806 810 189.6
C 14 254 169397 889.31 806 810 189.6
D 13 249 196848 981.56 808 784 199.7
D 2 249 192652 960.55 808 784 199.7
D 5 32 74025 366.67 808 784 199.7

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