ASTROSAT CZTI

Data Quality Report

Orbit 46486

Creation date: 2024-06-27T23:23:43.311422
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_037T05_9000006216_46486cztM0_level2.fits modeM0/AS1A13_037T05_9000006216_46486cztM0_level2_quad_clean.evt
Size (bytes)475,732,800108,293,760
Size453.7 MB 103.3 MB
Events in quadrant A5,881,318716,414
Events in quadrant B3,606,701746,423
Events in quadrant C2,920,408719,407
Events in quadrant D4,688,892635,826

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216541
B0151051
C0135011
D0187131

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6611881.331115%
B6611671.013462%
C6611100.151263%
D66112694.068976%

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 7626 6612 14 14 0.18% 0.21%
B 7626 6612 39 39 0.51% 0.59%
C 7626 6612 0 0 0.00% 0.00%
D 7626 6611 247 247 3.24% 3.74%

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 3019452 19681.98 733 719 153.4
A 13 254 12449 76.48 733 719 153.4
A 3 137 8293 49.38 733 719 153.4
B 5 32 390860 2683.18 734 712 145.4
B 10 128 127402 871.29 734 712 145.4
B 4 170 44072 298.2 734 712 145.4
C 9 54 37100 209.67 733 738 173.4
C 3 233 15111 82.88 733 738 173.4
C 12 2 6870 35.36 733 738 173.4
D 1 52 1260585 7072.39 713 693 178.1
D 13 249 411977 2308.74 713 693 178.1
D 2 249 206851 1157.27 713 693 178.1

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