ASTROSAT CZTI

Data Quality Report

Orbit 25252

Creation date: 2024-06-27T19:15:33.032524
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/AS1A09_027T01_9000003694_25252cztM0_level2.evt modeM0/AS1A09_027T01_9000003694_25252cztM0_level2_quad_clean.evt
Size (bytes)1,692,668,160154,751,040
Size1.6 GB 147.6 MB
Events in quadrant A5,862,3621,164,661
Events in quadrant B6,275,9561,176,091
Events in quadrant C6,998,3721,122,426
Events in quadrant D31,267,758339,166

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257610
B0268400
C0291270
D01016960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12744770.604206%
B127441491.169178%
C127441901.490898%
D127441142989.681419%

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 14169 12746 0 0 0.00% 0.00%
B 14169 12746 17 17 0.12% 0.13%
C 14169 12746 4 4 0.03% 0.03%
D 14168 12743 10140 10140 71.57% 79.57%

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 3 1 22006 66.67 1515 1478 307.9
A 13 254 19886 59.79 1515 1478 307.9
A 3 137 13720 39.76 1515 1478 307.9
B 0 229 236326 830.0 1505 1466 283.0
B 0 190 69062 238.89 1505 1466 283.0
B 10 251 56062 192.94 1505 1466 283.0
C 7 247 795996 2343.53 1451 1460 339.0
C 14 238 232856 682.51 1451 1460 339.0
C 3 233 121365 353.67 1451 1460 339.0
D 1 239 27075258 184623.43 605 585 146.6
D 8 195 730293 4975.91 605 585 146.6
D 9 35 722769 4924.61 605 585 146.6

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