ASTROSAT CZTI

Data Quality Report

Orbit 34741

Creation date: 2022-03-03T11:16:57.437217
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/AS1A10_048T04_9000004984_34741cztM0_level2.evt modeM0/AS1A10_048T04_9000004984_34741cztM0_level2_quad_clean.evt
Size (bytes)490,443,84066,142,080
Size467.7 MB 63.1 MB
Events in quadrant A3,164,585416,602
Events in quadrant B4,570,843424,268
Events in quadrant C2,887,046421,346
Events in quadrant D3,896,064394,095

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126143
B0167482
C0113092
D0150602

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4942330.667746%
B494276615.499798%
C4942470.951032%
D4942921.861594%

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 7064 4943 33 33 0.47% 0.67%
B 7064 4943 552 552 7.81% 11.17%
C 7064 4943 32 32 0.45% 0.65%
D 7064 4943 69 69 0.98% 1.40%

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 391729 3037.13 649 639 128.8
A 15 223 158117 1222.94 649 639 128.8
A 10 83 47407 363.19 649 639 128.8
B 4 171 1659623 14429.29 611 597 115.0
B 5 172 171097 1482.91 611 597 115.0
B 0 190 165645 1435.5 611 597 115.0
C 15 214 210201 1415.72 639 646 148.0
C 0 10 139484 937.97 639 646 148.0
C 14 67 21529 141.08 639 646 148.0
D 8 195 766906 4954.45 636 620 154.7
D 1 52 222014 1431.43 636 620 154.7
D 2 249 143509 923.85 636 620 154.7

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