ASTROSAT CZTI

Data Quality Report

Orbit 15716

Creation date: 2024-06-27T17:12:30.294868
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/AS1A04_198T01_9000002322_15716cztM0_level2.evt modeM0/AS1A04_198T01_9000002322_15716cztM0_level2_quad_clean.evt
Size (bytes)469,100,160103,253,760
Size447.4 MB 98.5 MB
Events in quadrant A3,053,687676,480
Events in quadrant B3,241,173692,443
Events in quadrant C3,339,792668,428
Events in quadrant D4,134,591640,340

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133653
B0138422
C0139482
D0167502

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6442310.481217%
B6442460.714064%
C6442520.807203%
D64422403.725551%

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 7578 6444 4 4 0.05% 0.06%
B 7578 6444 6 6 0.08% 0.09%
C 7578 6444 0 0 0.00% 0.00%
D 7578 6444 223 223 2.94% 3.46%

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 9 143 55462 348.99 777 761 156.7
A 15 157 7211 41.15 777 761 156.7
A 0 226 6651 37.58 777 761 156.7
B 4 173 45393 299.22 783 763 149.2
B 4 216 38608 253.73 783 763 149.2
B 5 236 37756 248.02 783 763 149.2
C 3 233 240613 1361.47 755 762 176.2
C 14 238 118589 668.82 755 762 176.2
C 9 54 21065 115.25 755 762 176.2
D 12 144 767164 4084.51 743 725 187.6
D 1 52 446869 2377.59 743 725 187.6
D 10 70 68710 362.31 743 725 187.6

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