ASTROSAT CZTI

Data Quality Report

Orbit 13818

Creation date: 2024-06-27T16:46:29.749433
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_199T01_9000002040_13818cztM0_level2.evt modeM0/AS1A04_199T01_9000002040_13818cztM0_level2_quad_clean.evt
Size (bytes)531,555,84086,808,960
Size506.9 MB 82.8 MB
Events in quadrant A3,111,020555,258
Events in quadrant B3,352,008561,370
Events in quadrant C3,085,750553,433
Events in quadrant D6,106,816503,244

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136613
B0141552
C0134382
D0226102

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6523460.705197%
B6523671.027135%
C6523210.321938%
D65244917.526058%

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 7539 6524 0 0 0.00% 0.00%
B 7539 6524 14 14 0.19% 0.21%
C 7539 6525 1 1 0.01% 0.02%
D 7540 6525 483 483 6.41% 7.40%

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 8 15 37344 230.41 783 765 158.8
A 1 162 28077 172.04 783 765 158.8
A 1 178 10459 61.06 783 765 158.8
B 3 64 170566 1133.78 785 764 149.8
B 0 214 23957 154.86 785 764 149.8
B 0 219 23131 149.35 785 764 149.8
C 3 233 90920 503.25 765 768 179.1
C 12 4 6344 31.13 765 768 179.1
C 13 61 5604 27.0 765 768 179.1
D 1 52 1186655 6492.05 747 727 182.7
D 5 222 1131934 6192.49 747 727 182.7
D 13 122 532726 2912.29 747 727 182.7

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