ASTROSAT CZTI

Data Quality Report

Orbit 11871

Creation date: 2024-06-27T16:19:20.445324
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/AS1A04_049T01_9000001754_11871cztM0_level2.evt modeM0/AS1A04_049T01_9000001754_11871cztM0_level2_quad_clean.evt
Size (bytes)529,715,52081,642,240
Size505.2 MB 77.9 MB
Events in quadrant A3,559,857503,917
Events in quadrant B4,465,760497,436
Events in quadrant C3,192,216504,155
Events in quadrant D4,345,222474,709

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152603
B0180662
C0145182
D0176732

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70591401.983284%
B70593615.114039%
C7059610.864145%
D70592653.754073%

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 9250 7062 0 0 0.00% 0.00%
B 9250 7062 132 132 1.43% 1.87%
C 9250 7062 0 0 0.00% 0.00%
D 9250 7062 133 133 1.44% 1.88%

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 1 162 130269 765.93 833 812 169.0
A 1 178 67358 393.72 833 812 169.0
A 1 161 59792 348.95 833 812 169.0
B 4 239 580880 3710.71 829 807 156.3
B 3 64 343390 2191.49 829 807 156.3
B 15 204 77977 493.65 829 807 156.3
C 13 61 6173 28.16 817 819 190.1
C 14 234 2444 8.55 817 819 190.1
C 7 247 2201 7.27 817 819 190.1
D 13 122 366124 1915.94 795 771 190.7
D 8 195 331211 1732.86 795 771 190.7
D 1 52 203475 1063.0 795 771 190.7

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