ASTROSAT CZTI

Data Quality Report

Orbit 14946

Creation date: 2024-06-27T17:01:38.956806
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_052T01_9000002208_14946cztM0_level2.evt modeM0/AS1T02_052T01_9000002208_14946cztM0_level2_quad_clean.evt
Size (bytes)1,101,101,760151,197,120
Size1.0 GB 144.2 MB
Events in quadrant A5,640,290989,435
Events in quadrant B6,656,921959,639
Events in quadrant C5,838,146972,276
Events in quadrant D14,385,164810,669

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02520
B02520
C02520
D02520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250082
B0279472
C0251782
D0512532

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12224600.490838%
B122242872.347840%
C12224530.433573%
D12224279122.832134%

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 13511 12227 0 0 0.00% 0.00%
B 13511 12227 127 127 0.94% 1.04%
C 13511 12227 11 11 0.08% 0.09%
D 13511 12227 2632 2632 19.48% 21.53%

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 49748 164.93 1447 1417 293.0
A 0 226 12846 39.0 1447 1417 293.0
A 12 194 10648 31.5 1447 1417 293.0
B 10 16 676906 2468.25 1429 1389 273.7
B 0 189 146643 530.74 1429 1389 273.7
B 0 219 92611 333.31 1429 1389 273.7
C 3 233 308678 939.59 1406 1412 327.0
C 10 22 38100 112.19 1406 1412 327.0
C 7 247 11678 31.39 1406 1412 327.0
D 7 254 9045112 29194.37 1291 1258 309.8
D 10 70 235307 755.53 1291 1258 309.8
D 7 223 80029 254.28 1291 1258 309.8

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