ASTROSAT CZTI

Data Quality Report

Orbit 16192

Creation date: 2024-06-27T17:19:09.956379
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_109T01_9000002386_16192cztM0_level2.evt modeM0/AS1T02_109T01_9000002386_16192cztM0_level2_quad_clean.evt
Size (bytes)2,649,888,000454,579,200
Size2.5 GB 433.5 MB
Events in quadrant A18,658,8822,811,988
Events in quadrant B18,449,6492,886,547
Events in quadrant C20,978,5562,761,527
Events in quadrant D19,611,7212,711,577

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0885707327
B0846125005
C0916224646
D0913925738

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A081552
B081452
C081352
D081545

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0448
B04511
C04410
D0448

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A377884261.127342%
B378263891.028393%
C378619902.614828%
D378138702.300796%

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 44426 38221 81 81 0.18% 0.21%
B 44464 38278 3 3 0.01% 0.01%
C 44461 38332 258 258 0.58% 0.67%
D 44463 38264 607 607 1.37% 1.59%

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 15 174 651710 718.79 4484 4385 900.6
A 8 247 533261 587.26 4484 4385 900.6
A 15 157 197524 214.46 4484 4385 900.6
B 0 229 217805 248.3 4509 4390 859.5
B 4 216 169078 191.61 4509 4390 859.5
B 3 209 139028 156.65 4509 4390 859.5
C 3 233 2136569 2130.13 4288 4316 1001.0
C 7 247 1268638 1263.06 4288 4316 1001.0
C 14 238 664719 659.75 4288 4316 1001.0
D 12 221 2039506 1939.29 4329 4208 1049.5
D 1 52 308555 289.99 4329 4208 1049.5
D 7 38 308514 289.95 4329 4208 1049.5

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