ASTROSAT CZTI

Data Quality Report

Orbit 39459

Creation date: 2024-06-27T22:04:47.802834
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_044T16_9000005478_39459cztM0_level2.fits modeM0/AS1A12_044T16_9000005478_39459cztM0_level2_quad_clean.evt
Size (bytes)422,798,40088,548,480
Size403.2 MB 84.4 MB
Events in quadrant A7,047,897529,409
Events in quadrant B2,533,316636,710
Events in quadrant C2,855,310598,175
Events in quadrant D2,805,630548,997

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0248343
B0109642
C0115962
D0120532

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5256101819.368341%
B5256300.570776%
C5256380.722983%
D5256661.255708%

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 7139 5257 1304 1304 18.27% 24.81%
B 7139 5257 19 19 0.27% 0.36%
C 7139 5257 41 41 0.57% 0.78%
D 7139 5257 59 59 0.83% 1.12%

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 15 222 4004111 34415.0 570 559 116.3
A 10 83 419244 3599.06 570 559 116.3
A 6 10 274787 2357.3 570 559 116.3
B 5 172 175770 1534.83 594 578 114.1
B 8 3 18578 157.7 594 578 114.1
B 12 111 14117 118.61 594 578 114.1
C 15 214 220054 1616.96 578 584 135.7
C 15 208 193767 1423.29 578 584 135.7
C 10 70 117684 862.74 578 584 135.7
D 12 227 227310 1600.51 571 554 141.7
D 2 249 128770 904.98 571 554 141.7
D 12 233 87053 610.53 571 554 141.7

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