ASTROSAT CZTI

Data Quality Report

Orbit 28480

Creation date: 2024-06-27T19:52:12.598878
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_050T06_9000004092_28480cztM0_level2.evt modeM0/AS1A10_050T06_9000004092_28480cztM0_level2_quad_clean.evt
Size (bytes)985,536,000141,505,920
Size939.9 MB 135.0 MB
Events in quadrant A5,761,534883,741
Events in quadrant B8,055,432878,730
Events in quadrant C6,090,555848,197
Events in quadrant D9,110,870826,663

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0249432
B0318323
C0255852
D0349742

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02480
B02500
C02500
D02500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A122631200.978553%
B122638526.947729%
C122631951.590149%
D122634343.539101%

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 13453 12263 0 0 0.00% 0.00%
B 13453 12263 574 574 4.27% 4.68%
C 13453 12263 13 13 0.10% 0.11%
D 13453 12263 403 403 3.00% 3.29%

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 96 24557 77.5 1485 1453 298.1
A 13 254 17054 52.33 1485 1453 298.1
A 3 137 15281 46.39 1485 1453 298.1
B 10 245 1409843 5146.76 1414 1377 273.7
B 10 246 1057061 3857.64 1414 1377 273.7
B 12 111 35576 124.97 1414 1377 273.7
C 14 238 224699 659.35 1431 1440 338.6
C 15 208 139954 409.07 1431 1440 338.6
C 7 247 96420 280.5 1431 1440 338.6
D 1 52 1946126 5699.79 1432 1394 341.2
D 8 195 1561749 4573.23 1432 1394 341.2
D 13 104 114209 330.65 1432 1394 341.2

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