ASTROSAT CZTI

Data Quality Report

Orbit 11490

Creation date: 2024-06-27T16:13:41.898988
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_107T01_9000001684_11490cztM0_level2.evt modeM0/AS1A04_107T01_9000001684_11490cztM0_level2_quad_clean.evt
Size (bytes)585,400,32099,025,920
Size558.3 MB 94.4 MB
Events in quadrant A6,321,737611,344
Events in quadrant B3,995,457662,494
Events in quadrant C3,008,345653,223
Events in quadrant D3,967,708623,182

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232463
B0161072
C0132652
D0159212

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6430108616.889580%
B64302153.343701%
C6430470.730949%
D64301762.737170%

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 7586 6431 639 639 8.42% 9.94%
B 7586 6432 86 86 1.13% 1.34%
C 7586 6432 0 0 0.00% 0.00%
D 7586 6431 99 99 1.31% 1.54%

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 5 3235244 21515.37 751 740 150.3
A 9 143 54043 354.56 751 740 150.3
A 15 223 37890 247.12 751 740 150.3
B 4 239 638811 4219.13 794 776 151.2
B 11 51 162168 1067.24 794 776 151.2
B 0 214 44894 291.74 794 776 151.2
C 13 61 5711 27.94 770 776 176.6
C 12 4 3374 14.71 770 776 176.6
C 14 67 2430 9.36 770 776 176.6
D 1 52 638914 3466.5 771 749 184.1
D 2 120 107892 582.0 771 749 184.1
D 13 152 99802 538.05 771 749 184.1

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