ASTROSAT CZTI

Data Quality Report

Orbit 15212

Creation date: 2024-06-27T17:05:22.253406
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/AS1T02_071T01_9000002246_15212cztM0_level2.evt modeM0/AS1T02_071T01_9000002246_15212cztM0_level2_quad_clean.evt
Size (bytes)533,877,120131,598,720
Size509.1 MB 125.5 MB
Events in quadrant A3,277,286905,192
Events in quadrant B4,169,896904,904
Events in quadrant C5,193,050883,295
Events in quadrant D3,107,338858,826

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137573
B0164742
C0199602
D0134082

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6221360.578685%
B62213135.031345%
C62211993.198843%
D6221380.610834%

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 7597 6223 1 1 0.01% 0.02%
B 7597 6223 187 187 2.46% 3.00%
C 7597 6223 125 125 1.65% 2.01%
D 7597 6223 31 31 0.41% 0.50%

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 0 253 119037 762.57 784 771 155.1
A 12 189 108189 692.62 784 771 155.1
A 15 239 20235 125.5 784 771 155.1
B 3 112 789103 5544.73 777 760 142.2
B 3 64 129608 906.24 777 760 142.2
B 10 245 80028 557.52 777 760 142.2
C 3 233 1803773 10575.86 754 760 170.5
C 4 254 440001 2576.44 754 760 170.5
C 13 61 5477 27.67 754 760 170.5
D 7 38 111643 610.35 755 733 181.7
D 2 33 25165 134.45 755 733 181.7
D 2 234 23187 123.57 755 733 181.7

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