ASTROSAT CZTI

Data Quality Report

Orbit 09886

Creation date: 2024-06-27T15:51:52.512087
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/AS1A03_117T06_9000001404_09886cztM0_level2.evt modeM0/AS1A03_117T06_9000001404_09886cztM0_level2_quad_clean.evt
Size (bytes)405,624,96086,872,320
Size386.8 MB 82.8 MB
Events in quadrant A2,952,076553,087
Events in quadrant B3,047,206575,747
Events in quadrant C2,904,424551,795
Events in quadrant D2,962,549521,131

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012948203
B013140217
C012900198
D013271199

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01284
B01280
C01282
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6136390.635593%
B6137530.863614%
C6138110.179211%
D6139280.456100%

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 7561 6223 0 0 0.00% 0.00%
B 7561 6220 5 5 0.07% 0.08%
C 7561 6222 0 0 0.00% 0.00%
D 7561 6219 3 3 0.04% 0.05%

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 13 251 16524 103.98 762 748 151.7
A 0 226 6978 41.06 762 748 151.7
A 12 194 5991 34.56 762 748 151.7
B 4 81 46714 313.76 769 752 146.5
B 12 111 17081 111.47 769 752 146.5
B 11 111 13972 90.24 769 752 146.5
C 14 67 12755 70.17 741 746 171.1
C 13 61 5388 27.12 741 746 171.1
C 9 221 4622 22.65 741 746 171.1
D 1 52 96289 507.33 725 711 188.4
D 2 16 27988 144.79 725 711 188.4
D 8 195 23678 121.91 725 711 188.4

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