ASTROSAT CZTI

Data Quality Report

Orbit 09857

Creation date: 2024-06-27T15:51:30.731080
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/AS1A03_117T06_9000001404_09857cztM0_level2.evt modeM0/AS1A03_117T06_9000001404_09857cztM0_level2_quad_clean.evt
Size (bytes)315,829,44064,834,560
Size301.2 MB 61.8 MB
Events in quadrant A2,193,880416,345
Events in quadrant B2,277,504430,869
Events in quadrant C2,463,313397,214
Events in quadrant D2,316,592396,891

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192
B0193
C0194
D0206

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130093493
B0133543676
C0150724755
D0139684011

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012838
B012727
C012824
D012836

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4601230.499891%
B4578340.742682%
C4463761.702890%
D4563531.161517%

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 7588 5612 0 0 0.00% 0.00%
B 7587 5536 4 4 0.05% 0.07%
C 7588 5491 29 29 0.38% 0.53%
D 7588 5580 16 16 0.21% 0.29%

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 0 226 5189 40.26 568 558 115.0
A 12 194 4407 33.46 568 558 115.0
A 13 253 3272 23.59 568 558 115.0
B 4 81 47278 430.88 571 560 108.4
B 0 229 13126 115.9 571 560 108.4
B 12 111 12460 109.75 571 560 108.4
C 4 254 382188 3063.42 532 537 124.6
C 13 61 3965 27.52 532 537 124.6
C 9 54 2907 19.02 532 537 124.6
D 2 16 134467 954.55 535 524 140.3
D 13 137 50716 357.7 535 524 140.3
D 10 172 41841 294.45 535 524 140.3

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