ASTROSAT CZTI

Data Quality Report

Orbit 50229

Creation date: 2025-01-10T14:42:31.577694
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/AS1C09_003T01_9000006442_50229cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50229cztM0_level2_quad_clean.evt
Size (bytes)901,019,52066,666,240
Size859.3 MB 63.6 MB
Events in quadrant A4,599,010550,938
Events in quadrant B3,263,822615,390
Events in quadrant C13,190,611195,191
Events in quadrant D11,827,545230,331

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177451
B0139971
C0434091
D0393245

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61003545.803279%
B61011622.655302%
C6101420268.873955%
D6100358758.803279%

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 7054 6101 252 252 3.57% 4.13%
B 7055 6102 80 80 1.13% 1.31%
C 7056 6103 4327 4327 61.32% 70.90%
D 7055 6102 3643 3643 51.64% 59.70%

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 11 7 378849 2416.09 636 620 156.5
A 15 32 266771 1700.15 636 620 156.5
A 8 38 255883 1630.59 636 620 156.5
B 6 203 106432 774.33 639 618 136.7
B 5 32 89323 649.13 639 618 136.7
B 5 185 74860 543.29 639 618 136.7
C 4 111 4671688 38305.91 425 421 121.9
C 15 197 3984772 32672.98 425 421 121.9
C 15 127 1340313 10987.55 425 421 121.9
D 7 61 6320697 49217.54 442 425 128.4
D 15 108 1084938 8445.37 442 425 128.4
D 15 58 572842 4457.55 442 425 128.4

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