ASTROSAT CZTI

Data Quality Report

Orbit 13787

Creation date: 2024-06-27T16:46:06.281232
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_13787cztM0_level2.evt modeM0/AS1A04_199T01_9000002040_13787cztM0_level2_quad_clean.evt
Size (bytes)825,215,040153,708,480
Size787.0 MB 146.6 MB
Events in quadrant A5,900,015961,292
Events in quadrant B5,947,808970,735
Events in quadrant C5,663,616959,443
Events in quadrant D6,654,591920,816

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02480
B02480
C02480
D02480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0255503
B0256682
C0249322
D0279962

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A121901521.246924%
B121901511.238720%
C12190640.525021%
D121902031.665299%

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 13346 12192 27 27 0.20% 0.22%
B 13346 12193 11 11 0.08% 0.09%
C 13346 12193 1 1 0.01% 0.01%
D 13346 12193 109 109 0.82% 0.89%

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 180092 597.93 1449 1416 298.8
A 0 23 82013 269.71 1449 1416 298.8
A 8 15 29525 94.07 1449 1416 298.8
B 0 219 94182 333.33 1446 1408 278.3
B 10 252 44219 153.82 1446 1408 278.3
B 4 173 40686 141.12 1446 1408 278.3
C 3 233 149629 449.41 1413 1418 329.8
C 13 61 10374 27.16 1413 1418 329.8
C 14 234 7937 19.77 1413 1418 329.8
D 1 52 730524 1959.77 1394 1364 372.1
D 13 249 492244 1319.34 1394 1364 372.1
D 10 157 56747 148.85 1394 1364 372.1

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