ASTROSAT CZTI

Data Quality Report

Orbit 00909

Creation date: 2024-06-27T14:04:34.038639
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/AS1P01_161T02_9000000184_00909cztM0_level2.evt modeM0/AS1P01_161T02_9000000184_00909cztM0_level2_quad_clean.evt
Size (bytes)274,602,24021,980,160
Size261.9 MB 21.0 MB
Events in quadrant A3,003,406112,187
Events in quadrant B1,914,006156,098
Events in quadrant C1,668,143150,208
Events in quadrant D1,640,671147,460

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A099450
B066120
C058940
D058150

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A132260245.537065%
B132280.605144%
C132150.378501%
D132120.151400%

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 1322 1322 725 725 54.84% 54.84%
B 1322 1322 114 114 8.62% 8.62%
C 1321 1321 37 37 2.80% 2.80%
D 1321 1321 35 35 2.65% 2.65%

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 15 233 1554228 17171.48 370 373 90.5
A 15 127 27943 304.67 370 373 90.5
A 11 79 1939 17.31 370 373 90.5
B 3 0 23484 202.27 470 474 113.8
B 0 220 22858 196.77 470 474 113.8
B 5 200 18973 162.62 470 474 113.8
C 15 241 11589 96.28 417 431 115.9
C 9 83 10986 91.07 417 431 115.9
C 7 159 7620 62.03 417 431 115.9
D 1 4 23133 171.31 427 441 132.5
D 12 188 6543 46.07 427 441 132.5
D 2 16 5536 38.46 427 441 132.5

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