ASTROSAT CZTI

Data Quality Report

Orbit 01781

Creation date: 2024-06-27T14:12:36.538989
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/AS1G02_020T01_9000000296_01781cztM0_level2.evt modeM0/AS1G02_020T01_9000000296_01781cztM0_level2_quad_clean.evt
Size (bytes)970,911,36095,713,920
Size925.9 MB 91.3 MB
Events in quadrant A7,710,198627,243
Events in quadrant B7,263,126638,255
Events in quadrant C6,759,459618,326
Events in quadrant D7,281,784604,348

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B110
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270751
B0257481
C0242887
D0257991

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5874440.749064%
B5874350.595846%
C5872290.493869%
D5874721.225741%

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 7064 5875 275 275 3.89% 4.68%
B 7064 5875 232 232 3.28% 3.95%
C 7064 5874 170 170 2.41% 2.89%
D 7064 5875 305 305 4.32% 5.19%

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 0 231 552114 1232.55 1864 1875 446.4
A 15 236 17073 34.04 1864 1875 446.4
A 13 9 11524 21.61 1864 1875 446.4
B 0 229 13108 24.86 1910 1921 450.1
B 7 202 9200 16.17 1910 1921 450.1
B 0 234 7187 11.7 1910 1921 450.1
C 8 208 13015 23.55 1725 1781 476.9
C 9 236 6895 10.72 1725 1781 476.9
C 15 246 6407 9.7 1725 1781 476.9
D 7 85 370555 695.76 1706 1764 530.1
D 13 53 167197 312.11 1706 1764 530.1
D 2 16 122437 227.66 1706 1764 530.1

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