ASTROSAT CZTI

Data Quality Report

Orbit 45225

Creation date: 2024-06-27T23:10:51.542447
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/AS1A13_049T07_9000006056_45225cztM0_level2.fits modeM0/AS1A13_049T07_9000006056_45225cztM0_level2_quad_clean.evt
Size (bytes)1,030,685,760215,075,520
Size982.9 MB 205.1 MB
Events in quadrant A11,019,8921,445,225
Events in quadrant B7,557,7741,487,634
Events in quadrant C6,262,3491,456,328
Events in quadrant D12,270,6181,191,522

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0433393
B0315233
C0281373
D0458513

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02760
B02760
C02760
D02760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A134763922.908875%
B134764143.072128%
C13476350.259721%
D13477146510.870372%

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 16376 13478 76 76 0.46% 0.56%
B 16376 13478 266 266 1.62% 1.97%
C 16376 13478 16 16 0.10% 0.12%
D 16377 13479 1336 1336 8.16% 9.91%

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 10 83 4926060 15799.37 1502 1469 311.7
A 13 248 154467 490.86 1502 1469 311.7
A 2 79 68959 216.53 1502 1469 311.7
B 5 32 674354 2295.47 1508 1460 293.1
B 3 112 450679 1532.44 1508 1460 293.1
B 5 172 249333 845.58 1508 1460 293.1
C 12 2 231972 660.73 1497 1506 348.8
C 14 254 81234 228.57 1497 1506 348.8
C 3 233 72605 203.84 1497 1506 348.8
D 13 249 2458434 7009.37 1414 1374 350.5
D 5 235 1211433 3451.99 1414 1374 350.5
D 11 241 798023 2272.64 1414 1374 350.5

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