ASTROSAT CZTI

Data Quality Report

Orbit 08012

Creation date: 2024-06-27T15:26:48.132528
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/AS1G06_154T01_9000001100_08012cztM0_level2.evt modeM0/AS1G06_154T01_9000001100_08012cztM0_level2_quad_clean.evt
Size (bytes)997,732,800180,766,080
Size951.5 MB 172.4 MB
Events in quadrant A7,147,3181,095,836
Events in quadrant B7,158,5101,124,176
Events in quadrant C7,012,9711,118,205
Events in quadrant D7,860,9371,080,106

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03120
B03120
C03122
D03122

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03177357
B03138535
C03136548
D03416431

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A153022901.895177%
B153142611.704323%
C153072051.339257%
D153163452.252546%

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 16914 15328 6 6 0.04% 0.04%
B 16914 15332 1 1 0.01% 0.01%
C 16914 15332 0 0 0.00% 0.00%
D 16914 15331 93 93 0.55% 0.61%

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 15 234 170861 454.09 1813 1768 372.4
A 0 226 16797 40.36 1813 1768 372.4
A 12 194 15351 36.48 1813 1768 372.4
B 12 111 41235 111.42 1823 1776 354.1
B 11 111 32971 88.09 1823 1776 354.1
B 5 250 30856 82.11 1823 1776 354.1
C 1 16 30726 70.14 1777 1787 412.6
C 8 128 24667 55.45 1777 1787 412.6
C 13 61 13418 28.19 1777 1787 412.6
D 11 144 606211 1421.59 1763 1716 425.2
D 1 52 272947 637.85 1763 1716 425.2
D 2 14 166154 386.71 1763 1716 425.2

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