ASTROSAT CZTI

Data Quality Report

Orbit 13773

Creation date: 2024-06-27T16:45:54.600277
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_199T01_9000002040_13773cztM0_level2.evt modeM0/AS1A04_199T01_9000002040_13773cztM0_level2_quad_clean.evt
Size (bytes)1,555,750,080215,478,720
Size1.4 GB 205.5 MB
Events in quadrant A8,759,2521,363,602
Events in quadrant B8,777,0061,381,754
Events in quadrant C9,051,9531,372,609
Events in quadrant D19,323,9521,177,170

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03640
B03640
C03640
D03640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380784
B0376583
C0387083
D0696623

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A178443411.911007%
B178442531.417844%
C178441250.700516%
D17844321718.028469%

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 19555 17847 124 124 0.63% 0.69%
B 19555 17847 31 31 0.16% 0.17%
C 19555 17848 8 8 0.04% 0.04%
D 19555 17846 2451 2451 12.53% 13.73%

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 9 143 480073 1110.5 2106 2058 430.4
A 15 69 63019 141.62 2106 2058 430.4
A 1 162 46398 103.01 2106 2058 430.4
B 3 64 160568 390.64 2113 2060 405.8
B 0 219 108096 261.33 2113 2060 405.8
B 4 173 71327 170.71 2113 2060 405.8
C 14 220 773740 1616.34 2062 2069 477.4
C 3 233 233593 484.95 2062 2069 477.4
C 13 61 14682 26.42 2062 2069 477.4
D 1 52 8172850 18044.47 1873 1821 452.8
D 5 222 3091367 6822.79 1873 1821 452.8
D 10 157 550996 1212.77 1873 1821 452.8

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