ASTROSAT CZTI

Data Quality Report

Orbit 20240807_A13_025T02_9000006380_level2

Creation date: 2024-08-16T09:37:48.137785
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/AS1A13_025T02_9000006380cztM0_level2.fits modeM0/AS1A13_025T02_9000006380cztM0_level2_quad_clean.evt
Size (bytes)698,529,600782,159,040
Size666.2 MB 745.9 MB
Events in quadrant A3,971,5304,584,718
Events in quadrant B4,009,7524,858,275
Events in quadrant C4,157,2604,630,202
Events in quadrant D3,470,9824,075,862

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03091850
B01719790
C01686260
D02200710

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0750
B0750
C0750
D0750

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016340
B016340
C016340
D016340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8079852516.498923%
B8080314261.764786%
C808036680.826702%
D8080658997.300200%

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 113957 80796 0 0 0.00% 0.00%
B 113958 80818 0 0 0.00% 0.00%
C 113958 80819 0 0 0.00% 0.00%
D 113957 80703 0 0 0.00% 0.00%

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 7 110 3265 8.51 1035 960 270.7
A 14 95 2997 7.52 1035 960 270.7
A 7 30 2932 7.28 1035 960 270.7
B 2 9 3939 13.97 1056 1000 210.4
B 2 8 3177 10.35 1056 1000 210.4
B 3 17 3017 9.59 1056 1000 210.4
C 3 202 3244 7.69 1100 1020 289.1
C 1 81 3104 7.21 1100 1020 289.1
C 3 203 3052 7.03 1100 1020 289.1
D 15 47 2546 5.89 996 900 279.3
D 15 63 2487 5.68 996 900 279.3
D 3 14 2483 5.67 996 900 279.3

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