ASTROSAT CZTI

Data Quality Report

Orbit 42816

Creation date: 2024-06-27T22:44:35.202210
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/AS1C07_001T12_9000005826_42816cztM0_level2.fits modeM0/AS1C07_001T12_9000005826_42816cztM0_level2_quad_clean.evt
Size (bytes)995,578,560247,792,320
Size949.5 MB 236.3 MB
Events in quadrant A8,594,4211,684,105
Events in quadrant B9,982,2191,658,798
Events in quadrant C7,902,0911,596,342
Events in quadrant D9,166,8651,486,602

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0342573
B0401873
C0333503
D0382703

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15594410.262922%
B155946244.001539%
C15594880.564320%
D155943382.167500%

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 19804 15597 25 25 0.13% 0.16%
B 19804 15597 510 510 2.58% 3.27%
C 19804 15597 71 71 0.36% 0.46%
D 19804 15597 308 308 1.56% 1.97%

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 1678283 4881.4 1692 1657 343.5
A 7 3 141936 408.41 1692 1657 343.5
A 12 189 95237 272.45 1692 1657 343.5
B 0 229 1791887 5684.78 1648 1602 314.9
B 5 255 788578 2498.92 1648 1602 314.9
B 4 171 387912 1226.67 1648 1602 314.9
C 15 214 640229 1685.87 1633 1642 378.8
C 4 254 330723 868.77 1633 1642 378.8
C 14 254 258312 677.61 1633 1642 378.8
D 12 233 806407 2023.91 1640 1594 397.7
D 1 52 746338 1872.85 1640 1594 397.7
D 10 118 424310 1063.03 1640 1594 397.7

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