ASTROSAT CZTI

Data Quality Report

Orbit 34439

Creation date: 2022-02-10T02:04:13.868288
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_058T05_9000004918_34439cztM0_level2.evt modeM0/AS1A10_058T05_9000004918_34439cztM0_level2_quad_clean.evt
Size (bytes)542,649,60087,793,920
Size517.5 MB 83.7 MB
Events in quadrant A2,388,351606,174
Events in quadrant B4,209,579596,530
Events in quadrant C2,914,687589,184
Events in quadrant D6,585,061517,395

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102233
B0159392
C0114982
D0231032

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A497650.100482%
B49763076.169614%
C49761432.873794%
D497682016.479100%

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 7009 4977 0 0 0.00% 0.00%
B 7009 4977 206 206 2.94% 4.14%
C 7009 4977 116 116 1.66% 2.33%
D 7009 4977 781 781 11.14% 15.69%

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 36837 301.34 605 595 120.3
A 13 254 8204 63.27 605 595 120.3
A 3 137 5927 44.33 605 595 120.3
B 4 171 1697884 14886.68 594 580 114.0
B 5 172 105134 917.02 594 580 114.0
B 5 255 20233 172.37 594 580 114.0
C 0 10 262607 1957.2 578 585 133.9
C 15 214 207308 1544.14 578 585 133.9
C 4 254 152328 1133.46 578 585 133.9
D 8 195 1786398 13075.28 552 537 136.6
D 12 79 946289 6924.38 552 537 136.6
D 10 118 683434 4999.87 552 537 136.6

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