ASTROSAT CZTI

Data Quality Report

Orbit 28261

Creation date: 2024-06-27T19:49:46.566262
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_067T01_9000004076_28261cztM0_level2.evt modeM0/AS1A10_067T01_9000004076_28261cztM0_level2_quad_clean.evt
Size (bytes)383,797,44055,920,960
Size366.0 MB 53.3 MB
Events in quadrant A2,316,383346,630
Events in quadrant B2,481,074346,475
Events in quadrant C2,465,898330,057
Events in quadrant D4,023,610323,019

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101860
B0105670
C0104950
D0153940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4945871.759353%
B49451062.143579%
C49461372.769915%
D49463286.631622%

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 4945 4945 0 0 0.00% 0.00%
B 4945 4945 8 8 0.16% 0.16%
C 4946 4946 2 2 0.04% 0.04%
D 4946 4946 228 228 4.61% 4.61%

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 13 254 7845 59.37 600 588 122.2
A 3 137 6092 45.03 600 588 122.2
A 0 226 5146 37.29 600 588 122.2
B 10 245 98104 833.0 591 574 117.1
B 10 246 34343 288.42 591 574 117.1
B 12 111 14429 118.33 591 574 117.1
C 3 233 120879 879.88 573 577 136.7
C 14 238 91582 665.6 573 577 136.7
C 8 128 7944 53.88 573 577 136.7
D 1 52 1200096 8572.88 573 556 139.9
D 8 195 265147 1890.98 573 556 139.9
D 2 250 168650 1201.34 573 556 139.9

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