ASTROSAT CZTI

Data Quality Report

Orbit 46729

Creation date: 2024-06-27T23:26:55.233411
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_092T09_9000006258_46729cztM0_level2.fits modeM0/AS1A13_092T09_9000006258_46729cztM0_level2_quad_clean.evt
Size (bytes)929,136,960198,106,560
Size886.1 MB 188.9 MB
Events in quadrant A12,221,9041,296,926
Events in quadrant B7,284,5681,312,581
Events in quadrant C5,722,0011,311,207
Events in quadrant D8,166,6461,184,684

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0451296
B0304573
C0267623
D0330476

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02660
B02660
C02660
D02660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A129054703.641999%
B129076374.935306%
C129071771.371349%
D129065033.897412%

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 13736 12906 20 20 0.15% 0.15%
B 13737 12908 233 233 1.70% 1.81%
C 13737 12909 15 15 0.11% 0.12%
D 13737 12908 247 247 1.80% 1.91%

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 6410442 21878.75 1410 1380 292.9
A 9 191 151182 511.38 1410 1380 292.9
A 13 248 86875 291.86 1410 1380 292.9
B 12 16 703910 2555.96 1392 1342 274.9
B 3 112 434048 1574.2 1392 1342 274.9
B 4 171 258353 935.01 1392 1342 274.9
C 14 254 113785 340.82 1398 1403 329.7
C 3 233 89035 265.76 1398 1403 329.7
C 1 241 43234 126.86 1398 1403 329.7
D 1 52 1360299 3916.08 1392 1350 347.0
D 13 249 350437 1005.96 1392 1350 347.0
D 12 128 274016 785.74 1392 1350 347.0

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