ASTROSAT CZTI

Data Quality Report

Orbit 15318

Creation date: 2024-06-27T17:06:49.602881
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/AS1T02_073T01_9000002260_15318cztM0_level2.evt modeM0/AS1T02_073T01_9000002260_15318cztM0_level2_quad_clean.evt
Size (bytes)593,012,160113,909,760
Size565.5 MB 108.6 MB
Events in quadrant A5,454,404705,104
Events in quadrant B3,799,358750,883
Events in quadrant C4,025,433737,414
Events in quadrant D4,140,747703,611

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0218933
B0166212
C0170352
D0180642

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A795791911.549579%
B79571091.369863%
C7957460.578107%
D79571251.570944%

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 8858 7959 443 443 5.00% 5.57%
B 8858 7960 8 8 0.09% 0.10%
C 8858 7960 0 0 0.00% 0.00%
D 8858 7960 67 67 0.76% 0.84%

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 15 239 1879063 10049.71 928 907 186.9
A 0 226 8129 38.64 928 907 186.9
A 9 143 7482 35.18 928 907 186.9
B 0 189 40361 212.91 958 934 185.2
B 12 111 22805 118.1 958 934 185.2
B 11 111 19351 99.45 958 934 185.2
C 3 233 369412 1696.84 936 941 217.2
C 13 61 6560 25.88 936 941 217.2
C 7 221 3843 13.36 936 941 217.2
D 13 122 412819 1806.67 929 899 228.0
D 2 33 143126 623.8 929 899 228.0
D 8 195 38907 166.7 929 899 228.0

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