ASTROSAT CZTI

Data Quality Report

Orbit 37805

Creation date: 2024-06-27T21:44:40.861073
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/AS1A10_103T06_9000005348_37805cztM0_level2.evt modeM0/AS1A10_103T06_9000005348_37805cztM0_level2_quad_clean.evt
Size (bytes)445,754,88050,760,000
Size425.1 MB 48.4 MB
Events in quadrant A2,850,108298,769
Events in quadrant B3,691,964272,804
Events in quadrant C2,771,958305,921
Events in quadrant D3,814,068276,061

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116503
B0145512
C0114552
D0150822

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5466130.237834%
B54663947.208196%
C5466160.292719%
D54664428.086352%

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 7080 5467 5 5 0.07% 0.09%
B 7080 5467 360 360 5.08% 6.58%
C 7080 5467 8 8 0.11% 0.15%
D 7080 5467 442 442 6.24% 8.08%

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 339302 2674.3 626 613 126.6
A 15 222 56120 438.29 626 613 126.6
A 12 189 14509 109.72 626 613 126.6
B 0 229 1018573 8793.73 600 585 115.8
B 5 172 99222 852.06 600 585 115.8
B 0 189 61394 525.29 600 585 115.8
C 15 214 249152 1749.44 610 615 142.1
C 0 10 90462 632.43 610 615 142.1
C 0 207 30312 209.04 610 615 142.1
D 12 227 719739 4949.42 589 571 145.3
D 13 249 446173 3066.7 589 571 145.3
D 10 199 115353 789.95 589 571 145.3

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