ASTROSAT CZTI

Data Quality Report

Orbit 34803

Creation date: 2022-03-06T16:35:07.820220
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_004T01_9000004990_34803cztM0_level2.evt modeM0/AS1C07_004T01_9000004990_34803cztM0_level2_quad_clean.evt
Size (bytes)548,501,76099,780,480
Size523.1 MB 95.2 MB
Events in quadrant A3,168,983645,858
Events in quadrant B3,818,448650,375
Events in quadrant C3,606,395658,619
Events in quadrant D5,556,077592,431

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138293
B0155442
C0145592
D0210052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6808110.161575%
B68081281.880141%
C6808500.734430%
D68084616.771445%

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 9884 6810 3 3 0.03% 0.04%
B 9884 6810 97 97 0.98% 1.42%
C 9884 6810 37 37 0.37% 0.54%
D 9884 6810 394 394 3.99% 5.79%

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 52786 321.17 795 781 161.9
A 15 174 18896 111.87 795 781 161.9
A 13 254 12158 70.26 795 781 161.9
B 5 172 365685 2393.12 788 767 152.5
B 5 255 239527 1565.78 788 767 152.5
B 4 171 43218 278.39 788 767 152.5
C 15 214 305124 1698.77 776 783 179.2
C 0 10 164058 911.37 776 783 179.2
C 14 67 88434 489.25 776 783 179.2
D 2 249 1000348 5382.71 753 731 185.7
D 8 195 799147 4299.29 753 731 185.7
D 10 118 319595 1717.01 753 731 185.7

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