ASTROSAT CZTI

Data Quality Report

Orbit 46962

Creation date: 2024-06-27T23:30:01.124200
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/AS1A13_071T07_9000006290_46962cztM0_level2.fits modeM0/AS1A13_071T07_9000006290_46962cztM0_level2_quad_clean.evt
Size (bytes)867,507,840162,832,320
Size827.3 MB 155.3 MB
Events in quadrant A9,790,8861,092,959
Events in quadrant B10,229,6991,038,896
Events in quadrant C4,809,8251,082,178
Events in quadrant D6,461,819981,228

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360252
B0377762
C0222712
D0268782

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A106092812.648695%
B10609124811.763597%
C106091391.310208%
D106094223.977755%

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 11979 10611 24 24 0.20% 0.23%
B 11979 10611 768 768 6.41% 7.24%
C 11979 10611 29 29 0.24% 0.27%
D 11979 10611 273 273 2.28% 2.57%

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 10 83 5243549 22121.22 1149 1124 237.0
A 0 243 45404 186.85 1149 1124 237.0
A 7 3 42586 174.96 1149 1124 237.0
B 3 112 5188613 23870.83 1112 1077 217.3
B 5 255 438144 2011.19 1112 1077 217.3
B 0 190 83928 381.24 1112 1077 217.3
C 1 3 227820 853.34 1137 1139 265.6
C 14 254 62764 231.99 1137 1139 265.6
C 15 208 60958 225.19 1137 1139 265.6
D 13 249 1215018 4308.02 1125 1088 281.8
D 12 3 210195 742.08 1125 1088 281.8
D 13 112 193569 683.08 1125 1088 281.8

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