ASTROSAT CZTI

Data Quality Report

Orbit 34324

Creation date: 2022-02-02T09:49:06.292421
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/AS1A05_082T08_9000004900_34324cztM0_level2.evt modeM0/AS1A05_082T08_9000004900_34324cztM0_level2_quad_clean.evt
Size (bytes)821,531,520132,701,760
Size783.5 MB 126.6 MB
Events in quadrant A4,529,683842,399
Events in quadrant B5,378,883857,671
Events in quadrant C5,497,154850,792
Events in quadrant D8,810,569787,338

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0470
B0470
C0470
D0480

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02000
B02000
C02000
D02000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200274
B0222873
C0221833
D0331263

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9823220.223964%
B98231251.272524%
C98231161.180902%
D98236526.637483%

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 13618 9825 3 3 0.02% 0.03%
B 13618 9825 79 79 0.58% 0.80%
C 13618 9825 94 94 0.69% 0.96%
D 13618 9825 470 470 3.45% 4.78%

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 45482 193.53 1150 1126 229.2
A 9 143 29593 124.21 1150 1126 229.2
A 13 254 15641 63.33 1150 1126 229.2
B 5 172 462637 2116.44 1147 1120 218.1
B 0 190 153870 700.49 1147 1120 218.1
B 5 31 83967 379.92 1147 1120 218.1
C 14 254 420878 1630.33 1123 1134 257.5
C 15 214 406287 1573.66 1123 1134 257.5
C 0 10 179118 691.31 1123 1134 257.5
D 8 195 1670162 6207.99 1098 1070 268.9
D 12 235 1162262 4318.92 1098 1070 268.9
D 10 118 899566 3341.85 1098 1070 268.9

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