ASTROSAT CZTI

Data Quality Report

Orbit 28794

Creation date: 2024-06-27T19:56:26.139450
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/AS1A10_103T01_9000004132_28794cztM0_level2.evt modeM0/AS1A10_103T01_9000004132_28794cztM0_level2_quad_clean.evt
Size (bytes)656,072,64083,462,400
Size625.7 MB 79.6 MB
Events in quadrant A4,143,710509,700
Events in quadrant B3,763,452544,767
Events in quadrant C4,550,819502,388
Events in quadrant D6,950,840496,289

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165211
B0153821
C0177201
D0253761

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68014496.601970%
B68023154.630991%
C680279111.628933%
D6802110716.274625%

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 7256 6801 266 266 3.67% 3.91%
B 7257 6802 87 87 1.20% 1.28%
C 7256 6801 180 180 2.48% 2.65%
D 7257 6802 923 923 12.72% 13.57%

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 15 174 619471 3707.18 823 802 166.9
A 14 235 321274 1920.33 823 802 166.9
A 14 239 15447 87.76 823 802 166.9
B 5 172 319119 1988.75 834 810 160.1
B 10 246 93828 581.16 834 810 160.1
B 0 189 24477 147.87 834 810 160.1
C 4 254 743318 4079.22 779 783 182.0
C 3 233 433165 2375.35 779 783 182.0
C 14 238 198491 1086.14 779 783 182.0
D 1 52 2497176 13634.24 764 742 183.1
D 8 195 965133 5267.01 764 742 183.1
D 13 104 325445 1773.36 764 742 183.1

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