ASTROSAT CZTI

Data Quality Report

Orbit 46899

Creation date: 2024-06-27T23:29:01.694674
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/AS1A13_068T05_9000006280_46899cztM0_level2.fits modeM0/AS1A13_068T05_9000006280_46899cztM0_level2_quad_clean.evt
Size (bytes)845,602,560109,918,080
Size806.4 MB 104.8 MB
Events in quadrant A7,446,932838,886
Events in quadrant B14,384,106350,357
Events in quadrant C4,026,205831,357
Events in quadrant D4,832,617758,461

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0271871
B0481761
C0179351
D0202481

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78962443.090172%
B7896477260.435664%
C78961692.140324%
D78962963.748734%

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 7896 7896 22 22 0.28% 0.28%
B 7896 7896 4142 4142 52.46% 52.46%
C 7896 7896 142 142 1.80% 1.80%
D 7896 7896 237 237 3.00% 3.00%

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 3921951 21328.39 881 862 183.8
A 13 248 50258 268.68 881 862 183.8
A 7 3 29366 155.04 881 862 183.8
B 3 112 11771138 95871.3 627 606 122.8
B 4 171 40058 321.34 627 606 122.8
B 0 190 34297 274.41 627 606 122.8
C 12 2 492134 2400.94 873 878 204.6
C 14 254 106199 514.74 873 878 204.6
C 12 250 14166 64.94 873 878 204.6
D 13 249 603027 2803.24 865 841 214.8
D 2 249 449466 2088.4 865 841 214.8
D 1 52 302605 1404.74 865 841 214.8

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