ASTROSAT CZTI

Data Quality Report

Orbit 09980

Creation date: 2024-06-27T15:53:16.989056
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/AS1G07_074T01_9000001426_09980cztM0_level2.evt modeM0/AS1G07_074T01_9000001426_09980cztM0_level2_quad_clean.evt
Size (bytes)969,828,480135,069,120
Size924.9 MB 128.8 MB
Events in quadrant A10,430,600765,405
Events in quadrant B5,593,854870,637
Events in quadrant C5,085,962877,049
Events in quadrant D7,490,612789,287

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0111
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0462137769
B0275833455
C0266873206
D0363996603

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026832
B026830
C026838
D026834

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11120191717.239209%
B115051911.660148%
C115381421.230716%
D112445414.811455%

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 14236 11971 1638 1638 11.51% 13.68%
B 14236 12380 3 3 0.02% 0.02%
C 14236 12416 2 2 0.01% 0.02%
D 14236 12104 374 374 2.63% 3.09%

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 13 251 5512752 21860.53 1237 1205 252.1
A 15 174 98002 383.93 1237 1205 252.1
A 4 2 35372 135.52 1237 1205 252.1
B 11 51 139262 540.5 1331 1298 255.3
B 0 214 106966 413.98 1331 1298 255.3
B 4 239 54379 207.96 1331 1298 255.3
C 8 128 9983 28.74 1297 1301 302.1
C 13 61 9721 27.87 1297 1301 302.1
C 8 208 7165 19.41 1297 1301 302.1
D 2 16 1528412 4929.49 1243 1209 309.8
D 2 33 409671 1318.43 1243 1209 309.8
D 1 52 252837 812.2 1243 1209 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