ASTROSAT CZTI

Data Quality Report

Orbit 47854

Creation date: 2024-08-03T16:30:07.755629
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/AS1A13_073T04_9000006358_47854cztM0_level2.fits modeM0/AS1A13_073T04_9000006358_47854cztM0_level2_quad_clean.evt
Size (bytes)1,144,486,080255,444,480
Size1.1 GB 243.6 MB
Events in quadrant A15,465,7191,709,596
Events in quadrant B7,166,2191,803,133
Events in quadrant C6,778,4031,688,681
Events in quadrant D11,733,9271,443,604

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0569783
B0325963
C0324153
D0464533

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03220
B03220
C03220
D03220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A157944472.830189%
B157951741.101614%
C15795550.348211%
D1579411647.369887%

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 19118 15795 78 78 0.41% 0.49%
B 19119 15795 16 16 0.08% 0.10%
C 19119 15796 13 13 0.07% 0.08%
D 19118 15794 975 975 5.10% 6.17%

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 8666347 24160.64 1747 1714 358.6
A 7 3 59215 160.34 1747 1714 358.6
A 3 137 20169 51.46 1747 1714 358.6
B 0 198 71055 204.07 1753 1697 339.9
B 4 21 66546 190.8 1753 1697 339.9
B 5 255 44996 127.4 1753 1697 339.9
C 14 254 88233 219.36 1699 1702 394.5
C 1 3 25963 61.5 1699 1702 394.5
C 12 2 23795 56.01 1699 1702 394.5
D 12 2 2195035 5333.2 1660 1609 411.3
D 2 249 1080957 2624.38 1660 1609 411.3
D 2 165 980537 2380.21 1660 1609 411.3

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