ASTROSAT CZTI

Data Quality Report

Orbit 12804

Creation date: 2024-06-27T16:32:33.530453
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/AS1G08_071T01_9000001888_12804cztM0_level2.evt modeM0/AS1G08_071T01_9000001888_12804cztM0_level2_quad_clean.evt
Size (bytes)465,848,64086,892,480
Size444.3 MB 82.9 MB
Events in quadrant A3,298,792548,998
Events in quadrant B4,242,748535,134
Events in quadrant C2,906,938554,031
Events in quadrant D3,211,022532,462

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141192
B0167581
C0133181
D0142361

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6605560.847843%
B66053625.480696%
C6605240.363361%
D6605871.317184%

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 7526 6607 2 2 0.03% 0.03%
B 7526 6607 207 207 2.75% 3.13%
C 7526 6607 0 0 0.00% 0.00%
D 7526 6607 52 52 0.69% 0.79%

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 8 15 200029 1259.77 771 755 158.2
A 12 189 120698 758.26 771 755 158.2
A 9 143 12587 74.8 771 755 158.2
B 4 239 831230 5825.42 748 730 142.6
B 0 219 254833 1782.36 748 730 142.6
B 10 245 182939 1278.07 748 730 142.6
C 13 61 5469 27.45 744 747 172.0
C 14 234 3572 16.42 744 747 172.0
C 3 202 1778 5.99 744 747 172.0
D 1 52 184411 1007.18 740 719 182.4
D 8 195 169252 924.06 740 719 182.4
D 13 172 28232 150.85 740 719 182.4

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