ASTROSAT CZTI

Data Quality Report

Orbit 22791

Creation date: 2024-06-27T18:45:48.536919
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_168T01_9000003368_22791cztM0_level2.evt modeM0/AS1T03_168T01_9000003368_22791cztM0_level2_quad_clean.evt
Size (bytes)866,871,360241,796,160
Size826.7 MB 230.6 MB
Events in quadrant A5,904,9881,651,097
Events in quadrant B6,179,5361,663,141
Events in quadrant C6,122,4191,575,351
Events in quadrant D7,172,3231,542,973

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02600
B02600
C02600
D02600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262232
B0268082
C0266642
D0304352

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12910680.526723%
B12911920.712571%
C129111421.099837%
D129112551.975060%

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 14200 12912 3 3 0.02% 0.02%
B 14201 12913 11 11 0.08% 0.09%
C 14201 12913 37 37 0.26% 0.29%
D 14201 12913 166 166 1.17% 1.29%

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 25157 76.86 1525 1491 307.9
A 15 174 23583 71.75 1525 1491 307.9
A 0 226 13095 37.69 1525 1491 307.9
B 0 228 67340 230.5 1522 1485 285.7
B 0 230 66995 229.29 1522 1485 285.7
B 0 190 36803 123.62 1522 1485 285.7
C 14 238 228993 675.15 1451 1460 337.0
C 10 22 185730 546.78 1451 1460 337.0
C 8 222 25308 70.76 1451 1460 337.0
D 1 52 1074450 3007.62 1466 1421 356.8
D 5 222 156277 434.05 1466 1421 356.8
D 1 239 153189 425.39 1466 1421 356.8

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