ASTROSAT CZTI

Data Quality Report

Orbit 38015

Creation date: 2024-06-27T21:47:20.534242
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/AS1A11_082T01_9000005356_38015cztM0_level2.fits modeM0/AS1A11_082T01_9000005356_38015cztM0_level2_quad_clean.evt
Size (bytes)350,259,84090,760,320
Size334.0 MB 86.6 MB
Events in quadrant A2,750,756616,069
Events in quadrant B2,739,089634,406
Events in quadrant C2,529,615626,886
Events in quadrant D4,558,303522,212

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109983
B0111742
C0103472
D0168162

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4978270.542387%
B4978661.325834%
C497830.060265%
D497852210.486139%

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 7041 4979 10 10 0.14% 0.20%
B 7041 4979 49 49 0.70% 0.98%
C 7041 4979 1 1 0.01% 0.02%
D 7041 4979 469 469 6.66% 9.42%

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 364960 3081.75 590 578 118.2
A 9 143 61812 517.88 590 578 118.2
A 13 6 19843 162.93 590 578 118.2
B 5 255 104173 928.74 584 570 111.6
B 4 81 99454 886.44 584 570 111.6
B 5 200 75092 668.05 584 570 111.6
C 15 214 214353 1596.52 578 583 133.9
C 14 254 29318 214.6 578 583 133.9
C 0 10 10603 74.83 578 583 133.9
D 1 52 941334 6981.63 554 539 134.8
D 12 227 464840 3445.57 554 539 134.8
D 12 233 222251 1645.32 554 539 134.8

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