ASTROSAT CZTI

Data Quality Report

Orbit 15395

Creation date: 2024-06-27T17:07:55.836085
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/AS1C03_001T01_9000002270_15395cztM0_level2.evt modeM0/AS1C03_001T01_9000002270_15395cztM0_level2_quad_clean.evt
Size (bytes)720,213,12083,715,840
Size686.8 MB 79.8 MB
Events in quadrant A2,967,053552,250
Events in quadrant B4,302,058539,635
Events in quadrant C3,599,411549,235
Events in quadrant D10,516,188451,963

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130662
B0169811
C0147181
D0356041

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6323590.933101%
B63233325.250672%
C63232694.254310%
D6323204532.342243%

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 7239 6324 13 13 0.18% 0.21%
B 7239 6324 211 211 2.91% 3.34%
C 7239 6324 214 214 2.96% 3.38%
D 7239 6324 1928 1928 26.63% 30.49%

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 15 69 44735 291.27 742 726 151.1
A 9 143 30682 198.26 742 726 151.1
A 14 238 12090 75.21 742 726 151.1
B 10 245 575014 4167.92 725 706 137.8
B 8 3 257482 1863.5 725 706 137.8
B 10 16 225537 1631.66 725 706 137.8
C 3 233 853931 5286.87 700 703 161.4
C 7 247 11583 67.42 700 703 161.4
C 13 61 5050 26.94 700 703 161.4
D 13 122 6638155 41317.92 659 640 160.6
D 2 33 799598 4973.44 659 640 160.6
D 9 68 233650 1450.47 659 640 160.6

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