ASTROSAT CZTI

Data Quality Report

Orbit 18231

Creation date: 2024-06-27T17:47:06.133383
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/AS1C04_001T01_9000002716_18231cztM0_level2.evt modeM0/AS1C04_001T01_9000002716_18231cztM0_level2_quad_clean.evt
Size (bytes)1,026,296,640229,714,560
Size978.8 MB 219.1 MB
Events in quadrant A6,361,6121,574,004
Events in quadrant B6,008,4811,598,503
Events in quadrant C5,994,7471,541,876
Events in quadrant D11,844,0191,351,175

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02600
B02600
C02600
D02600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0279162
B0266442
C0263432
D0441932

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A129101981.533695%
B12910890.689388%
C129101190.921766%
D12911185814.390830%

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 14135 12912 76 76 0.54% 0.59%
B 14135 12912 14 14 0.10% 0.11%
C 14135 12912 0 0 0.00% 0.00%
D 14136 12913 1624 1624 11.49% 12.58%

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 15 174 619184 2043.8 1490 1455 302.2
A 0 226 12914 37.91 1490 1455 302.2
A 3 137 11464 33.12 1490 1455 302.2
B 7 220 86788 300.46 1494 1454 284.0
B 12 111 33818 113.95 1494 1454 284.0
B 0 197 32863 110.59 1494 1454 284.0
C 14 238 222368 658.79 1440 1446 335.3
C 3 233 153804 454.33 1440 1446 335.3
C 13 61 10281 26.35 1440 1446 335.3
D 7 238 4706194 14751.76 1313 1274 318.9
D 5 222 1040159 3257.31 1313 1274 318.9
D 13 168 527511 1649.96 1313 1274 318.9

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