ASTROSAT CZTI

Data Quality Report

Orbit 45041

Creation date: 2024-06-27T23:09:17.711625
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_020T01_9000006040_45041cztM0_level2.fits modeM0/AS1A13_020T01_9000006040_45041cztM0_level2_quad_clean.evt
Size (bytes)624,867,840112,360,320
Size595.9 MB 107.2 MB
Events in quadrant A5,782,994767,700
Events in quadrant B4,005,653789,127
Events in quadrant C3,494,599773,725
Events in quadrant D9,317,158593,980

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0218141
B0162951
C0150281
D0325303

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68502413.518248%
B68502744.000000%
C68501712.496350%
D6849142120.747554%

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 7865 6851 8 8 0.10% 0.12%
B 7865 6851 69 69 0.88% 1.01%
C 7865 6851 57 57 0.72% 0.83%
D 7864 6849 1211 1211 15.40% 17.68%

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 2557315 15064.82 814 796 169.7
A 13 248 31621 181.64 814 796 169.7
A 10 248 23017 130.94 814 796 169.7
B 0 189 373714 2358.73 810 787 158.1
B 12 48 103836 651.78 810 787 158.1
B 5 255 83633 523.99 810 787 158.1
C 14 254 239152 1266.61 801 806 188.2
C 12 2 88923 468.27 801 806 188.2
C 1 3 20264 103.4 801 806 188.2
D 13 174 2242120 11809.54 758 736 189.8
D 13 249 1162675 6122.09 758 736 189.8
D 11 241 909279 4786.99 758 736 189.8

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