ASTROSAT CZTI

Data Quality Report

Orbit 47628

Creation date: 2024-07-19T09:20:12.512725
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_071T01_9000006340_47628cztM0_level2.fits modeM0/AS1A13_071T01_9000006340_47628cztM0_level2_quad_clean.evt
Size (bytes)1,009,238,400205,732,800
Size962.5 MB 196.2 MB
Events in quadrant A14,841,3081,326,891
Events in quadrant B8,258,8981,382,101
Events in quadrant C6,193,4731,350,233
Events in quadrant D7,029,6721,244,729

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540241
B0337011
C0284171
D0307711

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02720
B02720
C02720
D02720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1339010207.617625%
B133906004.480956%
C133912001.493540%
D133913172.367262%

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 14275 13393 466 466 3.26% 3.48%
B 14275 13393 177 177 1.24% 1.32%
C 14276 13394 42 42 0.29% 0.31%
D 14276 13394 157 157 1.10% 1.17%

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 7090729 23374.56 1467 1433 303.3
A 13 248 1508448 4968.87 1467 1433 303.3
A 9 191 490746 1613.34 1467 1433 303.3
B 5 172 2069195 7020.8 1486 1438 294.5
B 0 186 102277 342.39 1486 1438 294.5
B 0 200 76181 253.78 1486 1438 294.5
C 14 254 192287 548.35 1469 1473 348.0
C 3 233 136761 388.78 1469 1473 348.0
C 1 3 125452 356.29 1469 1473 348.0
D 13 29 426898 1161.51 1471 1424 366.3
D 2 249 302386 821.6 1471 1424 366.3
D 7 55 117941 318.08 1471 1424 366.3

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