ASTROSAT CZTI

Data Quality Report

Orbit 17565

Creation date: 2024-06-27T17:38:03.247025
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/AS1A05_012T02_9000002602_17565cztM0_level2.evt modeM0/AS1A05_012T02_9000002602_17565cztM0_level2_quad_clean.evt
Size (bytes)873,054,720182,934,720
Size832.6 MB 174.5 MB
Events in quadrant A6,878,4421,185,541
Events in quadrant B6,216,8121,183,490
Events in quadrant C6,235,2401,142,709
Events in quadrant D6,234,1911,135,283

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0294733
B0273093
C0272584
D0279733

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02660
B02660
C02660
D02660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12929990.765720%
B12929870.672906%
C129291451.121510%
D129291611.245263%

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 14619 12932 22 22 0.15% 0.17%
B 14619 12932 21 21 0.14% 0.16%
C 14619 12931 0 0 0.00% 0.00%
D 14619 12931 86 86 0.59% 0.67%

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 14 237 977624 3221.01 1505 1474 303.1
A 15 174 96064 312.12 1505 1474 303.1
A 0 13 21637 66.53 1505 1474 303.1
B 4 80 69585 235.38 1507 1464 289.4
B 0 229 48394 162.16 1507 1464 289.4
B 7 220 47756 159.96 1507 1464 289.4
C 3 233 265950 784.92 1443 1448 337.0
C 14 238 222661 656.45 1443 1448 337.0
C 0 79 36575 104.24 1443 1448 337.0
D 13 189 399907 1126.27 1458 1414 353.8
D 10 70 169134 474.03 1458 1414 353.8
D 2 234 60580 167.22 1458 1414 353.8

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