ASTROSAT CZTI

Data Quality Report

Orbit 34283

Creation date: 2022-01-30T13:31:44.029790
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/AS1T04_086T01_9000004890_34283cztM0_level2.evt modeM0/AS1T04_086T01_9000004890_34283cztM0_level2_quad_clean.evt
Size (bytes)565,338,24089,271,360
Size539.1 MB 85.1 MB
Events in quadrant A2,820,528577,631
Events in quadrant B3,518,616586,661
Events in quadrant C3,128,637596,751
Events in quadrant D7,237,347512,832

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124453
B0143362
C0129292
D0256622

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A615170.113803%
B6151981.593237%
C615170.113803%
D615191014.794342%

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 8805 6153 0 0 0.00% 0.00%
B 8805 6153 55 55 0.62% 0.89%
C 8805 6153 5 5 0.06% 0.08%
D 8805 6153 838 838 9.52% 13.62%

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 27122 183.65 711 696 143.9
A 9 143 22895 154.27 711 696 143.9
A 13 254 11148 72.64 711 696 143.9
B 5 172 253444 1852.95 705 686 136.4
B 4 251 206029 1505.35 705 686 136.4
B 0 229 177806 1298.45 705 686 136.4
C 15 214 267230 1660.81 698 706 160.5
C 4 254 75064 463.35 698 706 160.5
C 0 10 27160 164.85 698 706 160.5
D 7 80 1703509 10567.0 659 640 161.1
D 8 195 975221 6047.67 659 640 161.1
D 12 235 655835 4065.75 659 640 161.1

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