ASTROSAT CZTI

Data Quality Report

Orbit 09339

Creation date: 2024-06-27T15:44:41.568124
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/AS1G07_022T01_9000001322_09339cztM0_level2.evt modeM0/AS1G07_022T01_9000001322_09339cztM0_level2_quad_clean.evt
Size (bytes)957,951,360166,109,760
Size913.6 MB 158.4 MB
Events in quadrant A6,971,4711,053,136
Events in quadrant B6,042,3651,059,667
Events in quadrant C8,675,0701,016,000
Events in quadrant D6,457,9501,018,366

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02942482
B02682383
C034868115
D02852184

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02580
B02584
C02580
D02580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A127941200.937940%
B12793840.656609%
C127889857.702534%
D127931621.266318%

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 14236 12828 20 20 0.14% 0.16%
B 14237 12826 1 1 0.01% 0.01%
C 14236 12826 585 585 4.11% 4.56%
D 14237 12827 90 90 0.63% 0.70%

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 8 5 922848 3138.58 1464 1434 293.6
A 13 251 192924 652.27 1464 1434 293.6
A 1 162 91582 307.07 1464 1434 293.6
B 0 214 108685 383.26 1476 1438 279.8
B 0 219 66599 232.86 1476 1438 279.8
B 12 111 30040 102.21 1476 1438 279.8
C 4 254 3246559 10236.67 1378 1382 317.0
C 4 238 20408 60.01 1378 1382 317.0
C 14 234 20348 59.83 1378 1382 317.0
D 13 104 445424 1213.45 1409 1372 365.9
D 2 152 179873 487.78 1409 1372 365.9
D 7 71 159232 431.38 1409 1372 365.9

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