ASTROSAT CZTI

Data Quality Report

Orbit 12379

Creation date: 2024-06-27T16:26:23.859133
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/AS1G08_072T03_9000001836_12379cztM0_level2.evt modeM0/AS1G08_072T03_9000001836_12379cztM0_level2_quad_clean.evt
Size (bytes)942,834,24077,114,880
Size899.2 MB 73.5 MB
Events in quadrant A4,359,995500,185
Events in quadrant B14,119,100345,528
Events in quadrant C4,696,762498,123
Events in quadrant D4,874,719472,082

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177862
B0470201
C0190881
D0194071

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74473674.928159%
B7447501567.342554%
C74474746.364979%
D74475437.291527%

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 7597 7447 6 6 0.08% 0.08%
B 7598 7448 4768 4768 62.75% 64.02%
C 7598 7448 203 203 2.67% 2.73%
D 7598 7448 310 310 4.08% 4.16%

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 13 251 247866 1337.2 901 880 184.7
A 1 162 217330 1171.87 901 880 184.7
A 1 178 110414 593.02 901 880 184.7
B 2 32 7041127 71877.49 509 496 98.0
B 2 48 4441914 45342.24 509 496 98.0
B 4 239 537847 5485.79 509 496 98.0
C 15 208 1159983 5629.37 882 888 205.9
C 14 234 91169 438.47 882 888 205.9
C 13 61 6378 26.66 882 888 205.9
D 13 104 691186 3270.87 877 853 211.1
D 1 52 655079 3099.8 877 853 211.1
D 8 195 84696 397.26 877 853 211.1

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