ASTROSAT CZTI

Data Quality Report

Orbit 20220825_A10_094T20_9000005316_level2

Creation date: 2022-09-03T15:56:58.902791
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_094T20_9000005316cztM0_level2_bc.evt modeM0/AS1A10_094T20_9000005316cztM0_level2_quad_clean.evt
Size (bytes)1,388,059,200371,079,360
Size1.3 GB 353.9 MB
Events in quadrant A5,088,2952,583,518
Events in quadrant B7,155,9792,575,830
Events in quadrant C6,719,1012,683,206
Events in quadrant D21,761,7542,068,433

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03900
B03900
C03900
D03900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0409280
B0514190
C0458020
D01065680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0810
B0810
C0810
D0810

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19263590.306287%
B1926111515.975806%
C192633151.635259%
D19263703136.500026%

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 27275 19267 5 5 0.02% 0.03%
B 27275 19264 52 52 0.19% 0.27%
C 27275 19264 79 79 0.29% 0.41%
D 27275 19262 1157 1157 4.24% 6.01%

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 781435 3400.75 1040 1025 229.5
A 9 143 130196 562.88 1040 1025 229.5
A 13 248 94389 406.85 1040 1025 229.5
B 5 255 2121369 10578.34 1031 1014 200.4
B 5 172 265936 1321.68 1031 1014 200.4
B 0 190 182956 907.7 1031 1014 200.4
C 15 208 1148415 4696.74 1057 1055 244.3
C 15 214 764685 3125.93 1057 1055 244.3
C 1 23 378836 1546.45 1057 1055 244.3
D 12 235 15912586 74311.69 891 865 214.1
D 12 227 997358 4653.87 891 865 214.1
D 10 253 391272 1823.3 891 865 214.1

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