ASTROSAT CZTI

Data Quality Report

Orbit 44000

Creation date: 2024-06-27T22:58:08.056435
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_034T03_9000005926_44000cztM0_level2.fits modeM0/AS1A13_034T03_9000005926_44000cztM0_level2_quad_clean.evt
Size (bytes)233,775,36044,190,720
Size222.9 MB 42.1 MB
Events in quadrant A3,356,900233,741
Events in quadrant B1,490,838322,710
Events in quadrant C1,561,926306,013
Events in quadrant D2,023,879275,118

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01204929
B062540
C064174
D078795

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A280483929.921541%
B2808983.490028%
C2806531.888810%
D28071264.488778%

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 2808 2807 457 457 16.27% 16.28%
B 2808 2808 1 1 0.04% 0.04%
C 2809 2808 12 12 0.43% 0.43%
D 2808 2808 60 60 2.14% 2.14%

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 15 223 1122571 16562.74 314 304 67.8
A 14 238 658079 9707.63 314 304 67.8
A 10 83 348593 5140.15 314 304 67.8
B 0 213 28070 378.7 354 341 73.2
B 4 171 22837 307.24 354 341 73.2
B 4 173 20861 280.25 354 341 73.2
C 3 233 100406 1170.6 352 352 85.5
C 14 254 81821 953.17 352 352 85.5
C 15 158 6406 70.83 352 352 85.5
D 1 52 302424 3410.6 350 338 88.6
D 5 235 138500 1559.87 350 338 88.6
D 13 249 97448 1096.39 350 338 88.6

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