ASTROSAT CZTI

Data Quality Report

Orbit 42965

Creation date: 2024-06-27T22:46:20.383401
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/AS1T05_145T01_9000005836_42965cztM0_level2.fits modeM0/AS1T05_145T01_9000005836_42965cztM0_level2_quad_clean.evt
Size (bytes)666,797,76097,634,880
Size635.9 MB 93.1 MB
Events in quadrant A4,002,491902,099
Events in quadrant B13,099,05128,747
Events in quadrant C2,970,588877,249
Events in quadrant D4,186,723767,127

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156622
B0425096
C0120932
D0161292

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54511472.696753%
B5450525096.330275%
C545050.091743%
D54502644.844037%

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 7364 5452 114 114 1.55% 2.09%
B 7363 5451 5106 5106 69.35% 93.67%
C 7363 5451 1 1 0.01% 0.02%
D 7363 5450 241 241 3.27% 4.42%

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 608606 3538.91 723 701 171.8
A 15 237 570646 3317.92 723 701 171.8
A 15 222 21187 119.26 723 701 171.8
B 4 81 12479160 438357.58 128 126 28.5
B 4 171 103878 3644.55 128 126 28.5
B 5 172 3973 135.14 128 126 28.5
C 15 214 223530 1255.69 698 706 177.5
C 3 233 13425 71.68 698 706 177.5
C 14 254 9775 51.11 698 706 177.5
D 13 249 648199 3432.26 687 662 188.7
D 1 52 485349 2569.07 687 662 188.7
D 12 233 163212 861.59 687 662 188.7

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