ASTROSAT CZTI

Data Quality Report

Orbit 18383

Creation date: 2024-06-27T17:49:06.909927
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/AS1A06_006T01_9000002724_18383cztM0_level2.evt modeM0/AS1A06_006T01_9000002724_18383cztM0_level2_quad_clean.evt
Size (bytes)425,787,84059,587,200
Size406.1 MB 56.8 MB
Events in quadrant A2,963,169355,042
Events in quadrant B3,063,777360,455
Events in quadrant C3,124,046350,094
Events in quadrant D3,356,848339,827

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119931
B0122811
C0124351
D0135061

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5705210.368098%
B5706430.753593%
C5706791.384508%
D5706931.629863%

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 7055 5706 3 3 0.04% 0.05%
B 7056 5707 6 6 0.09% 0.11%
C 7056 5707 8 8 0.11% 0.14%
D 7056 5707 57 57 0.81% 1.00%

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 4 2 47150 310.54 750 737 149.5
A 0 8 17092 109.43 750 737 149.5
A 15 174 12565 79.14 750 737 149.5
B 3 64 75697 526.47 756 738 142.4
B 10 245 16353 109.67 756 738 142.4
B 12 111 16032 107.42 756 738 142.4
C 3 233 153502 908.69 726 734 168.1
C 14 238 115507 682.69 726 734 168.1
C 0 207 25259 145.88 726 734 168.1
D 1 52 253210 1441.57 727 707 175.2
D 14 34 162862 925.76 727 707 175.2
D 2 33 77180 436.59 727 707 175.2

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