ASTROSAT CZTI

Data Quality Report

Orbit 10946

Creation date: 2024-06-27T16:06:04.831869
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/AS1G08_037T01_9000001588_10946cztM0_level2.evt modeM0/AS1G08_037T01_9000001588_10946cztM0_level2_quad_clean.evt
Size (bytes)536,806,08078,615,360
Size511.9 MB 75.0 MB
Events in quadrant A4,852,522480,550
Events in quadrant B4,022,429510,607
Events in quadrant C2,782,340515,025
Events in quadrant D4,188,836451,235

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208962387
B0176671583
C0137121034
D0200453678

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01364
B01368
C013610
D01368

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59844717.870989%
B60962844.658793%
C6153180.292540%
D58744828.205652%

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 6926 6515 246 246 3.55% 3.78%
B 6926 6566 133 133 1.92% 2.03%
C 6925 6577 1 1 0.01% 0.02%
D 6926 6353 344 344 4.97% 5.41%

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 8 5 1586346 11095.35 698 687 142.9
A 14 238 313944 2191.96 698 687 142.9
A 8 15 137067 954.29 698 687 142.9
B 4 239 1054806 7530.1 721 701 140.0
B 0 214 34040 238.16 721 701 140.0
B 0 187 26048 181.07 721 701 140.0
C 13 61 5440 28.41 710 715 166.3
C 8 222 4794 24.53 710 715 166.3
C 14 128 3614 17.43 710 715 166.3
D 13 152 1466456 9090.21 657 639 161.3
D 5 222 53127 325.5 657 639 161.3
D 1 52 38962 237.66 657 639 161.3

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