ASTROSAT CZTI

Data Quality Report

Orbit 18284

Creation date: 2024-06-27T17:47:50.930845
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/AS1A06_006T01_9000002720_18284cztM0_level2.evt modeM0/AS1A06_006T01_9000002720_18284cztM0_level2_quad_clean.evt
Size (bytes)668,442,24092,678,400
Size637.5 MB 88.4 MB
Events in quadrant A3,242,340626,849
Events in quadrant B3,672,421623,430
Events in quadrant C3,409,018611,208
Events in quadrant D9,468,693479,720

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137781
B0149371
C0143051
D0327131

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6670681.019490%
B66711772.653275%
C66711522.278519%
D6671212531.854295%

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 7445 6671 4 4 0.05% 0.06%
B 7446 6672 79 79 1.06% 1.18%
C 7446 6672 39 39 0.52% 0.58%
D 7446 6672 1749 1749 23.49% 26.21%

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 42433 246.41 831 813 168.9
A 0 226 7382 38.89 831 813 168.9
A 12 194 6194 31.86 831 813 168.9
B 0 190 383891 2414.11 822 804 158.7
B 12 111 17835 107.32 822 804 158.7
B 7 220 15525 92.77 822 804 158.7
C 0 207 207740 1127.63 788 792 183.5
C 14 238 121852 659.64 788 792 183.5
C 13 61 5466 25.47 788 792 183.5
D 1 52 3728722 22311.02 683 664 167.1
D 7 238 2116543 12662.74 683 664 167.1
D 13 168 865817 5177.62 683 664 167.1

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