ASTROSAT CZTI

Data Quality Report

Orbit 15215

Creation date: 2024-06-27T17:05:25.160027
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/AS1T02_071T01_9000002246_15215cztM0_level2.evt modeM0/AS1T02_071T01_9000002246_15215cztM0_level2_quad_clean.evt
Size (bytes)719,513,280121,688,640
Size686.2 MB 116.1 MB
Events in quadrant A6,813,382804,935
Events in quadrant B5,949,833783,829
Events in quadrant C5,426,512827,346
Events in quadrant D3,155,188808,152

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0247612
B0221891
C0207021
D0141201

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66134857.334039%
B661398414.879782%
C66131872.827763%
D6613480.725843%

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 7434 6615 517 517 6.95% 7.82%
B 7434 6615 652 652 8.77% 9.86%
C 7434 6615 114 114 1.53% 1.72%
D 7434 6615 20 20 0.27% 0.30%

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 0 253 3660179 23989.72 754 738 152.5
A 12 189 227601 1487.22 754 738 152.5
A 13 248 24889 158.32 754 738 152.5
B 3 112 2808149 20762.55 723 705 135.2
B 0 245 87856 644.53 723 705 135.2
B 0 229 82443 604.5 723 705 135.2
C 3 233 2486774 14549.97 750 753 170.9
C 4 254 7799 41.24 750 753 170.9
C 13 61 5371 27.03 750 753 170.9
D 2 33 103139 562.29 751 728 182.1
D 8 195 81794 445.09 751 728 182.1
D 13 172 55833 302.55 751 728 182.1

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