ASTROSAT CZTI

Data Quality Report

Orbit 35309

Creation date: 2022-04-09T21:23:10.565738
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/AS1T05_023T01_9000005058_35309cztM0_level2.evt modeM0/AS1T05_023T01_9000005058_35309cztM0_level2_quad_clean.evt
Size (bytes)734,048,64082,961,280
Size700.0 MB 79.1 MB
Events in quadrant A4,304,854579,154
Events in quadrant B8,190,097482,410
Events in quadrant C2,982,088582,670
Events in quadrant D6,384,122482,988

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166933
B0280922
C0120532
D0225182

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5480851.551095%
B5480206637.700730%
C5480891.624088%
D5480122922.427007%

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 7063 5481 68 68 0.96% 1.24%
B 7063 5480 1620 1620 22.94% 29.56%
C 7063 5481 66 66 0.93% 1.20%
D 7062 5480 1133 1133 16.04% 20.68%

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 15 169 1720335 13517.96 629 618 127.2
A 10 83 98940 772.87 629 618 127.2
A 13 6 11859 88.36 629 618 127.2
B 5 236 4516468 43273.08 538 524 104.4
B 5 172 1317962 12624.07 538 524 104.4
B 5 200 218707 2090.69 538 524 104.4
C 0 10 233796 1628.11 614 618 143.2
C 15 214 229201 1596.03 614 618 143.2
C 3 233 77179 534.57 614 618 143.2
D 10 203 1436506 10674.75 554 540 134.5
D 7 80 718223 5335.14 554 540 134.5
D 13 249 705366 5239.57 554 540 134.5

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