ASTROSAT CZTI

Data Quality Report

Orbit 12475

Creation date: 2024-06-27T16:27:54.920450
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/AS1A04_174T01_9000001850_12475cztM0_level2.evt modeM0/AS1A04_174T01_9000001850_12475cztM0_level2_quad_clean.evt
Size (bytes)771,079,68091,494,720
Size735.4 MB 87.3 MB
Events in quadrant A10,041,873507,080
Events in quadrant B3,857,719640,864
Events in quadrant C2,967,148629,408
Events in quadrant D6,072,197564,730

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340902
B0153571
C0126231
D0220481

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6123224636.681365%
B61231943.168382%
C612370.114323%
D612378212.771517%

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 7434 6124 1705 1705 22.94% 27.84%
B 7434 6125 114 114 1.53% 1.86%
C 7434 6125 0 0 0.00% 0.00%
D 7434 6124 800 800 10.76% 13.06%

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 13 251 6482361 47039.41 689 678 137.8
A 0 23 572756 4151.73 689 678 137.8
A 12 189 86015 619.31 689 678 137.8
B 4 239 562511 3861.52 779 762 145.5
B 0 197 70500 479.39 779 762 145.5
B 3 64 55115 373.63 779 762 145.5
C 13 61 5517 27.02 760 767 175.8
C 3 233 3083 13.17 760 767 175.8
C 14 234 2698 10.98 760 767 175.8
D 1 52 3282003 18784.53 722 705 174.7
D 7 71 31622 176.99 722 705 174.7
D 2 234 22990 127.58 722 705 174.7

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