ASTROSAT CZTI

Data Quality Report

Orbit 28795

Creation date: 2024-06-27T19:56:27.215534
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_103T01_9000004132_28795cztM0_level2.evt modeM0/AS1A10_103T01_9000004132_28795cztM0_level2_quad_clean.evt
Size (bytes)793,189,44085,645,440
Size756.4 MB 81.7 MB
Events in quadrant A4,032,390547,772
Events in quadrant B3,978,488556,223
Events in quadrant C7,533,404439,045
Events in quadrant D7,953,796511,150

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168531
B0166411
C0275261
D0289041

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77412633.397494%
B77412973.836714%
C7741228129.466477%
D7741122515.824829%

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 7821 7741 4 4 0.05% 0.05%
B 7821 7741 15 15 0.19% 0.19%
C 7821 7741 808 808 10.33% 10.44%
D 7821 7741 1069 1069 13.67% 13.81%

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 14 235 211534 1081.24 965 943 194.8
A 4 2 33474 167.02 965 943 194.8
A 15 174 30401 151.25 965 943 194.8
B 5 172 72608 385.88 954 927 185.8
B 10 246 50695 267.91 954 927 185.8
B 0 229 34384 180.11 954 927 185.8
C 4 254 3703686 19343.35 812 816 191.4
C 14 238 258421 1345.7 812 816 191.4
C 14 254 192580 1001.75 812 816 191.4
D 1 52 1558290 7329.93 896 873 212.5
D 12 233 1498318 7047.67 896 873 212.5
D 8 195 874182 4110.2 896 873 212.5

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