ASTROSAT CZTI

Data Quality Report

Orbit 30889

Creation date: 2024-06-27T20:20:49.292116
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/AS1A10_071T28_9000004464_30889cztM0_level2.evt modeM0/AS1A10_071T28_9000004464_30889cztM0_level2_quad_clean.evt
Size (bytes)622,552,32088,156,800
Size593.7 MB 84.1 MB
Events in quadrant A3,290,200591,286
Events in quadrant B5,895,251589,537
Events in quadrant C4,061,085532,149
Events in quadrant D5,189,743524,537

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133672
B0215492
C0159352
D0197352

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6184160.258732%
B61842343.783959%
C61844507.276843%
D61844116.646184%

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 7529 6185 0 0 0.00% 0.00%
B 7529 6184 70 70 0.93% 1.13%
C 7529 6185 124 124 1.65% 2.00%
D 7529 6184 321 321 4.26% 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 13 254 10557 57.4 853 839 169.3
A 3 137 7873 41.55 853 839 169.3
A 0 226 7325 38.31 853 839 169.3
B 6 159 1783898 11356.65 846 829 157.0
B 6 36 531584 3380.46 846 829 157.0
B 0 229 126024 797.39 846 829 157.0
C 0 10 648302 3576.15 783 792 181.1
C 14 238 181890 1000.19 783 792 181.1
C 14 254 71718 391.72 783 792 181.1
D 12 218 1114469 6070.4 777 760 183.5
D 8 195 499257 2717.12 777 760 183.5
D 12 227 198486 1077.73 777 760 183.5

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