ASTROSAT CZTI

Data Quality Report

Orbit 34387

Creation date: 2022-02-06T14:57:57.419101
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/AS1A05_085T01_9000004910_34387cztM0_level2.evt modeM0/AS1A05_085T01_9000004910_34387cztM0_level2_quad_clean.evt
Size (bytes)2,003,423,040180,414,720
Size1.9 GB 172.1 MB
Events in quadrant A7,214,3281,212,193
Events in quadrant B8,599,8921,208,093
Events in quadrant C12,017,0411,201,417
Events in quadrant D31,783,962752,819

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03240
B03240
C03240
D03240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0318945
B0357704
C0465724
D01052074

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15747130.082555%
B157473882.463961%
C157473192.025783%
D157471009764.120150%

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 21237 15751 1 1 0.00% 0.01%
B 21237 15751 258 258 1.21% 1.64%
C 21237 15751 265 265 1.25% 1.68%
D 21236 15749 9771 9771 46.01% 62.04%

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 71491 191.16 1815 1779 364.7
A 5 168 55369 146.95 1815 1779 364.7
A 9 143 43112 113.34 1815 1779 364.7
B 5 172 1232845 3605.91 1791 1743 341.4
B 5 200 176461 511.75 1791 1743 341.4
B 12 111 43490 122.28 1791 1743 341.4
C 4 254 4147913 10354.57 1751 1765 400.4
C 15 214 648098 1614.15 1751 1765 400.4
C 14 67 200270 495.75 1751 1765 400.4
D 7 223 12184242 39330.08 1264 1226 309.8
D 2 249 10310505 33281.15 1264 1226 309.8
D 8 195 2640445 8520.11 1264 1226 309.8

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