ASTROSAT CZTI

Data Quality Report

Orbit 19869

Creation date: 2024-06-27T18:08:06.363379
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/AS1T03_118T01_9000002962_19869cztM0_level2.evt modeM0/AS1T03_118T01_9000002962_19869cztM0_level2_quad_clean.evt
Size (bytes)636,672,96066,343,680
Size607.2 MB 63.3 MB
Events in quadrant A5,736,390384,907
Events in quadrant B3,445,718409,519
Events in quadrant C4,425,582377,540
Events in quadrant D5,232,999381,983

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0214642
B0144422
C0174292
D0197152

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A651769110.603038%
B6517901.381004%
C65173315.079024%
D651768410.495627%

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 7582 6517 441 441 5.82% 6.77%
B 7582 6517 16 16 0.21% 0.25%
C 7582 6517 184 184 2.43% 2.82%
D 7582 6517 548 548 7.23% 8.41%

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 14 238 2606919 16020.62 812 795 162.7
A 0 226 6906 37.57 812 795 162.7
A 3 137 6378 34.32 812 795 162.7
B 4 216 77349 486.38 830 810 157.4
B 7 220 70225 441.11 830 810 157.4
B 12 111 18876 114.8 830 810 157.4
C 9 221 1194151 6470.53 795 800 184.4
C 14 238 125363 675.4 795 800 184.4
C 3 233 8473 41.6 795 800 184.4
D 1 52 2131393 11363.24 773 752 187.5
D 2 184 86842 459.14 773 752 187.5
D 7 238 59555 313.61 773 752 187.5

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