ASTROSAT CZTI

Data Quality Report

Orbit 32877

Creation date: 2024-06-27T20:42:54.571518
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/AS1A11_005T04_9000004742_32877cztM0_level2.evt modeM0/AS1A11_005T04_9000004742_32877cztM0_level2_quad_clean.evt
Size (bytes)534,810,24070,038,720
Size510.0 MB 66.8 MB
Events in quadrant A2,863,928438,489
Events in quadrant B4,341,898426,329
Events in quadrant C3,183,673439,178
Events in quadrant D5,392,637389,018

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124073
B0167532
C0133422
D0202322

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A611350.081793%
B61134567.459513%
C6113671.096025%
D61134617.541305%

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 9489 6115 5 5 0.05% 0.08%
B 9489 6115 309 309 3.26% 5.05%
C 9489 6115 59 59 0.62% 0.96%
D 9489 6115 391 391 4.12% 6.39%

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 63 45399 310.45 718 703 144.0
A 11 29 25633 173.16 718 703 144.0
A 13 6 13373 88.0 718 703 144.0
B 5 172 1174338 8698.48 701 684 134.9
B 0 197 201641 1489.38 701 684 134.9
B 0 219 79792 586.3 701 684 134.9
C 0 10 187663 1150.59 701 706 162.5
C 3 233 140223 858.63 701 706 162.5
C 1 241 55226 335.53 701 706 162.5
D 8 195 854434 5083.99 673 656 167.9
D 12 218 587489 3494.42 673 656 167.9
D 7 80 474346 2820.68 673 656 167.9

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