ASTROSAT CZTI

Data Quality Report

Orbit 21676

Creation date: 2024-06-27T18:30:58.901448
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/AS1T03_143T01_9000003208_21676cztM0_level2.evt modeM0/AS1T03_143T01_9000003208_21676cztM0_level2_quad_clean.evt
Size (bytes)981,671,040165,280,320
Size936.2 MB 157.6 MB
Events in quadrant A5,993,4301,068,209
Events in quadrant B6,676,7001,074,692
Events in quadrant C6,491,0301,031,312
Events in quadrant D9,707,499950,656

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02600
B02600
C02600
D02600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260672
B0277362
C0275912
D0374042

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12737710.557431%
B127381240.973465%
C127381331.044120%
D127389117.151829%

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 13912 12739 0 0 0.00% 0.00%
B 13913 12740 14 14 0.10% 0.11%
C 13913 12740 0 0 0.00% 0.00%
D 13913 12739 728 728 5.23% 5.71%

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 13 254 19707 58.36 1549 1517 311.7
A 0 226 13506 38.46 1549 1517 311.7
A 15 236 13153 37.33 1549 1517 311.7
B 0 229 153082 506.02 1547 1510 299.5
B 3 64 139478 460.61 1547 1510 299.5
B 0 189 95649 314.28 1547 1510 299.5
C 8 208 508209 1471.66 1472 1482 344.3
C 14 238 230305 664.56 1472 1482 344.3
C 10 22 12117 30.89 1472 1482 344.3
D 1 52 1786625 5001.22 1447 1405 357.0
D 1 20 804154 2248.87 1447 1405 357.0
D 12 16 576742 1611.78 1447 1405 357.0

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