ASTROSAT CZTI

Data Quality Report

Orbit 12832

Creation date: 2024-06-27T16:32:53.947045
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/AS1G08_071T01_9000001888_12832cztM0_level2.evt modeM0/AS1G08_071T01_9000001888_12832cztM0_level2_quad_clean.evt
Size (bytes)952,470,720173,249,280
Size908.3 MB 165.2 MB
Events in quadrant A6,183,3471,108,768
Events in quadrant B9,124,9611,031,647
Events in quadrant C5,821,7001,122,545
Events in quadrant D6,823,8981,073,712

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02720
B02720
C02720
D02720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0273334
B0361103
C0268153
D0295593

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13165760.577288%
B13165136610.375997%
C13165380.288644%
D131651230.934295%

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 15000 13167 1 1 0.01% 0.01%
B 15000 13167 860 860 5.73% 6.53%
C 15000 13167 0 0 0.00% 0.00%
D 15000 13167 63 63 0.42% 0.48%

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 12 189 186508 598.02 1528 1494 309.4
A 15 222 114125 364.05 1528 1494 309.4
A 0 226 13442 38.62 1528 1494 309.4
B 4 239 2856912 10610.39 1424 1388 269.1
B 0 85 344700 1275.66 1424 1388 269.1
B 0 219 140274 516.06 1424 1388 269.1
C 13 61 10947 27.34 1492 1500 345.5
C 12 237 5285 10.95 1492 1500 345.5
C 8 222 4431 8.48 1492 1500 345.5
D 1 52 792448 2122.01 1466 1430 372.8
D 13 104 109247 289.23 1466 1430 372.8
D 13 172 105060 278.0 1466 1430 372.8

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