ASTROSAT CZTI

Data Quality Report

Orbit 10440

Creation date: 2024-06-27T15:59:18.031400
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_126T01_9000001512_10440cztM0_level2.evt modeM0/AS1A03_126T01_9000001512_10440cztM0_level2_quad_clean.evt
Size (bytes)416,004,48061,611,840
Size396.7 MB 58.8 MB
Events in quadrant A3,250,817326,764
Events in quadrant B2,895,482374,180
Events in quadrant C2,606,834391,952
Events in quadrant D3,480,535397,625

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0284165
B0283158
C0282166
D0266149

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04472331965
B03368721699
C02940517639
D03443920309

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A042
B042
C042
D042

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A43731543.521610%
B53731472.735902%
C5690781.370826%
D5919931.571211%

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 7516 5463 2 2 0.03% 0.04%
B 7517 6508 10 10 0.13% 0.15%
C 7517 6766 0 0 0.00% 0.00%
D 7517 6714 3 3 0.04% 0.04%

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 1133159 10397.89 524 511 108.9
A 3 80 75704 690.28 524 511 108.9
A 8 5 8342 71.89 524 511 108.9
B 4 239 260016 2096.29 638 622 123.7
B 11 51 68026 544.72 638 622 123.7
B 0 214 48532 387.18 638 622 123.7
C 14 234 20395 127.29 662 663 155.0
C 13 61 4888 27.25 662 663 155.0
C 14 67 4324 23.62 662 663 155.0
D 8 195 274777 1654.1 684 665 165.7
D 1 52 261547 1574.27 684 665 165.7
D 1 20 198495 1193.79 684 665 165.7

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