ASTROSAT CZTI

Data Quality Report

Orbit 24095

Creation date: 2024-06-27T19:02:06.469803
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/AS1A07_027T15_9000003562_24095cztM0_level2.evt modeM0/AS1A07_027T15_9000003562_24095cztM0_level2_quad_clean.evt
Size (bytes)334,751,04015,842,880
Size319.2 MB 15.1 MB
Events in quadrant A2,394,96036,896
Events in quadrant B2,349,46837,323
Events in quadrant C2,381,62035,160
Events in quadrant D2,687,66935,198

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A099861
B098741
C099851
D0111211

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4753561.178203%
B4753440.925731%
C4753741.556911%
D4753491.030928%

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 5688 4753 12 12 0.21% 0.25%
B 5688 4753 6 6 0.11% 0.13%
C 5688 4753 1 1 0.02% 0.02%
D 5688 4753 15 15 0.26% 0.32%

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 6 16 62600 508.31 599 585 122.0
A 2 250 23118 184.69 599 585 122.0
A 13 254 8301 63.24 599 585 122.0
B 4 216 15973 132.77 594 579 115.9
B 12 111 14012 115.85 594 579 115.9
B 11 111 12409 102.03 594 579 115.9
C 14 238 90507 668.77 569 572 134.5
C 0 239 69197 510.3 569 572 134.5
C 13 61 3868 24.51 569 572 134.5
D 8 195 242752 1680.03 583 567 144.2
D 12 218 155725 1076.33 583 567 144.2
D 11 176 39102 267.32 583 567 144.2

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