ASTROSAT CZTI

Data Quality Report

Orbit 20220611_A10_071T37_9000005180_level2

Creation date: 2022-06-15T10:28:23.189924
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/AS1A10_071T37_9000005180cztM0_level2_bc.evt modeM0/AS1A10_071T37_9000005180cztM0_level2_quad_clean.evt
Size (bytes)2,650,855,680688,708,800
Size2.5 GB 656.8 MB
Events in quadrant A12,565,7264,422,095
Events in quadrant B22,767,4164,262,475
Events in quadrant C16,640,0794,332,389
Events in quadrant D24,523,1904,026,563

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011380
B011380
C011380
D011380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02020
B02020
C02020
D02020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01146590
B01629060
C01267290
D01612610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55607990.178035%
B5560746768.409013%
C556079581.722805%
D5560735566.394878%

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 75980 55619 2 2 0.00% 0.00%
B 75980 55601 182 182 0.24% 0.33%
C 75980 55607 191 191 0.25% 0.34%
D 75980 55605 900 900 1.18% 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 10 83 1371967 2163.58 2836 2782 632.8
A 9 143 139830 216.56 2836 2782 632.8
A 13 254 89997 137.82 2836 2782 632.8
B 5 172 6127013 11285.04 2756 2701 542.7
B 5 236 2992373 5508.96 2756 2701 542.7
B 4 171 1829155 3365.54 2756 2701 542.7
C 15 214 2174930 3435.59 2757 2731 632.3
C 0 207 2027347 3202.17 2757 2731 632.3
C 0 10 1597625 2522.51 2757 2731 632.3
D 12 6 5080647 7898.93 2700 2616 642.9
D 12 227 2858616 4442.54 2700 2616 642.9
D 2 250 1510786 2345.98 2700 2616 642.9

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