ASTROSAT CZTI

Data Quality Report

Orbit 00689

Creation date: 2024-06-27T14:01:35.915570
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_147T02_9000000098_00689cztM0_level2.evt modeM0/AS1P01_147T02_9000000098_00689cztM0_level2_quad_clean.evt
Size (bytes)1,113,935,04066,018,240
Size1.0 GB 63.0 MB
Events in quadrant A6,977,723412,359
Events in quadrant B7,963,194394,782
Events in quadrant C10,624,094373,408
Events in quadrant D7,764,406388,971

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0251301
B0280071
C0360024
D0274037

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A614670.113895%
B61461933.140254%
C612380313.114486%
D6145550.895037%

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 7036 6147 117 117 1.66% 1.90%
B 7036 6147 375 375 5.33% 6.10%
C 7036 6125 1186 1186 16.86% 19.36%
D 7036 6147 300 300 4.26% 4.88%

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 15 171 24033 50.58 1811 1824 439.1
A 11 79 7764 13.53 1811 1824 439.1
A 14 79 6022 9.56 1811 1824 439.1
B 8 4 552645 1267.34 1849 1860 434.6
B 5 247 142189 322.89 1849 1860 434.6
B 0 220 88543 199.45 1849 1860 434.6
C 3 191 1281547 2713.31 1690 1754 471.7
C 3 127 1016493 2151.37 1690 1754 471.7
C 3 31 329898 695.7 1690 1754 471.7
D 0 25 694046 1327.1 1687 1751 521.7
D 14 52 418447 798.79 1687 1751 521.7
D 1 4 147107 278.64 1687 1751 521.7

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