ASTROSAT CZTI

Data Quality Report

Orbit 16894

Creation date: 2024-06-27T17:29:04.778534
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/AS1A05_004T06_9000002506_16894cztM0_level2.evt modeM0/AS1A05_004T06_9000002506_16894cztM0_level2_quad_clean.evt
Size (bytes)392,785,92055,342,080
Size374.6 MB 52.8 MB
Events in quadrant A5,474,173320,598
Events in quadrant B1,995,227383,844
Events in quadrant C1,664,805367,167
Events in quadrant D2,519,763352,115

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187010
B080600
C071670
D097740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3553137738.755981%
B3553100.281452%
C355490.253236%
D35541774.980304%

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 3554 3554 1033 1033 29.07% 29.07%
B 3554 3554 5 5 0.14% 0.14%
C 3555 3555 0 0 0.00% 0.00%
D 3555 3555 144 144 4.05% 4.05%

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 15 174 3995581 54117.37 362 355 73.8
A 15 190 72444 976.48 362 355 73.8
A 12 189 7751 100.18 362 355 73.8
B 4 216 146288 1817.66 418 409 80.3
B 15 35 108469 1346.43 418 409 80.3
B 0 229 40922 504.79 418 409 80.3
C 14 238 62999 662.82 400 403 94.4
C 3 233 37172 389.34 400 403 94.4
C 13 61 2787 25.24 400 403 94.4
D 1 52 934475 9471.95 402 390 98.6
D 2 120 26887 268.69 402 390 98.6
D 10 70 22646 225.68 402 390 98.6

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