ASTROSAT CZTI

Data Quality Report

Orbit 30869

Creation date: 2024-06-27T20:20:34.349533
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/AS1A10_071T49_9000004462_30869cztM0_level2.evt modeM0/AS1A10_071T49_9000004462_30869cztM0_level2_quad_clean.evt
Size (bytes)1,643,319,360184,999,680
Size1.5 GB 176.4 MB
Events in quadrant A7,467,0471,190,019
Events in quadrant B23,857,0831,084,858
Events in quadrant C8,086,7701,134,887
Events in quadrant D9,315,0981,123,182

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0321843
B0815953
C0339094
D0376453

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A154922421.562097%
B15492470530.370514%
C154914002.582144%
D154913322.143180%

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 17287 15492 9 9 0.05% 0.06%
B 17287 15492 2011 2011 11.63% 12.98%
C 17286 15492 19 19 0.11% 0.12%
D 17286 15491 184 184 1.06% 1.19%

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 0 13 98456 251.67 1908 1867 383.8
A 13 254 28694 69.9 1908 1867 383.8
A 3 137 20117 47.55 1908 1867 383.8
B 6 36 12336556 35828.19 1776 1728 344.3
B 6 159 4207399 12215.94 1776 1728 344.3
B 5 172 100499 286.89 1776 1728 344.3
C 2 16 472204 1096.64 1824 1836 428.9
C 14 238 292317 677.24 1824 1836 428.9
C 0 10 85812 195.79 1824 1836 428.9
D 8 195 1409077 3230.31 1840 1797 435.6
D 12 233 253099 576.85 1840 1797 435.6
D 7 64 195117 443.75 1840 1797 435.6

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