ASTROSAT CZTI

Data Quality Report

Orbit 16886

Creation date: 2024-06-27T17:28:58.945579
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/AS1A05_004T06_9000002506_16886cztM0_level2.evt modeM0/AS1A05_004T06_9000002506_16886cztM0_level2_quad_clean.evt
Size (bytes)2,627,101,440294,874,560
Size2.4 GB 281.2 MB
Events in quadrant A12,722,4071,956,678
Events in quadrant B12,389,3351,983,910
Events in quadrant C11,274,4481,921,115
Events in quadrant D41,546,0241,399,504

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05000
B05000
C05000
D05000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0543928
B0529566
C0497186
D01401376

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A241996142.537295%
B241993811.574445%
C241993041.256250%
D241991113246.001901%

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 27252 24207 315 315 1.16% 1.30%
B 27252 24207 101 101 0.37% 0.42%
C 27252 24207 3 3 0.01% 0.01%
D 27251 24204 8914 8914 32.71% 36.83%

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 1704726 2986.02 2841 2777 570.0
A 0 23 58255 97.33 2841 2777 570.0
A 9 143 36382 58.96 2841 2777 570.0
B 10 16 510479 933.82 2843 2765 543.7
B 15 35 493206 902.05 2843 2765 543.7
B 0 229 87012 154.95 2843 2765 543.7
C 14 238 423465 656.42 2753 2772 640.9
C 3 233 72708 109.12 2753 2772 640.9
C 5 112 34474 49.47 2753 2772 640.9
D 1 52 32833615 61905.57 2185 2122 530.3
D 10 70 304745 570.61 2185 2122 530.3
D 2 234 92976 171.31 2185 2122 530.3

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