ASTROSAT CZTI

Data Quality Report

Orbit 37715

Creation date: 2024-06-27T21:43:32.751890
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/AS1A11_106T02_9000005344_37715cztM0_level2.evt modeM0/AS1A11_106T02_9000005344_37715cztM0_level2_quad_clean.evt
Size (bytes)448,156,80083,923,200
Size427.4 MB 80.0 MB
Events in quadrant A3,677,218521,957
Events in quadrant B3,105,249534,476
Events in quadrant C3,124,021540,861
Events in quadrant D3,251,415517,964

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147943
B0134992
C0131326
D0141192

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61022353.851196%
B6102520.852180%
C6101360.590067%
D6102691.130777%

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 8727 6101 195 195 2.23% 3.20%
B 8727 6101 31 31 0.36% 0.51%
C 8727 6100 32 32 0.37% 0.52%
D 8727 6101 58 58 0.66% 0.95%

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 15 222 679169 5075.82 666 653 133.7
A 10 83 344091 2569.18 666 653 133.7
A 9 143 46027 339.43 666 653 133.7
B 5 255 116064 906.61 668 650 127.3
B 5 172 107138 836.49 668 650 127.3
B 5 200 70027 544.98 668 650 127.3
C 15 214 278470 1823.65 658 663 152.3
C 14 254 141291 923.15 658 663 152.3
C 0 10 98700 643.56 658 663 152.3
D 13 249 202707 1268.19 653 634 159.3
D 2 250 191787 1199.66 653 634 159.3
D 7 223 124350 776.43 653 634 159.3

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