ASTROSAT CZTI

Data Quality Report

Orbit 13926

Creation date: 2024-06-27T16:48:00.991006
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/AS1G08_076T01_9000002056_13926cztM0_level2.evt modeM0/AS1G08_076T01_9000002056_13926cztM0_level2_quad_clean.evt
Size (bytes)453,012,48099,109,440
Size432.0 MB 94.5 MB
Events in quadrant A2,999,064618,586
Events in quadrant B3,172,361633,546
Events in quadrant C3,195,371669,978
Events in quadrant D3,908,239623,329

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134503
B0138862
C0136812
D0160522

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6537190.290653%
B6537450.688389%
C6537220.336546%
D65371472.248738%

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 7578 6539 0 0 0.00% 0.00%
B 7578 6539 5 5 0.07% 0.08%
C 7578 6539 0 0 0.00% 0.00%
D 7578 6539 106 106 1.40% 1.62%

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 26414 166.81 766 750 153.8
A 1 162 11166 67.7 766 750 153.8
A 0 226 6647 38.33 766 750 153.8
B 0 214 31053 207.46 773 752 146.1
B 4 80 29863 199.31 773 752 146.1
B 0 230 22583 149.47 773 752 146.1
C 3 233 190909 1077.33 770 775 176.5
C 13 61 5710 27.96 770 775 176.5
C 14 234 2670 10.74 770 775 176.5
D 1 52 257581 1467.49 743 726 175.0
D 13 189 200828 1143.24 743 726 175.0
D 7 80 138867 789.24 743 726 175.0

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