ASTROSAT CZTI

Data Quality Report

Orbit 00621

Creation date: 2024-06-27T14:00:41.716060
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/AS1P01_116T01_9000000086_00621cztM0_level2.evt modeM0/AS1P01_116T01_9000000086_00621cztM0_level2_quad_clean.evt
Size (bytes)806,912,64067,383,360
Size769.5 MB 64.3 MB
Events in quadrant A6,070,580420,440
Events in quadrant B6,412,161430,250
Events in quadrant C5,771,221419,008
Events in quadrant D5,833,223402,136

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0217713
B0227892
C0208962
D0211312

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A526560.113960%
B5265220.417854%
C526540.075973%
D5265711.348528%

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 7419 5266 112 112 1.51% 2.13%
B 7419 5266 170 170 2.29% 3.23%
C 7419 5266 43 43 0.58% 0.82%
D 7419 5266 179 179 2.41% 3.40%

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 0 238 34992 99.82 1539 1525 335.3
A 13 160 28071 79.18 1539 1525 335.3
A 15 171 21158 58.56 1539 1525 335.3
B 7 221 242404 669.1 1565 1570 359.9
B 0 220 89436 244.11 1565 1570 359.9
B 5 191 65584 177.85 1565 1570 359.9
C 15 241 25264 58.86 1459 1517 403.5
C 3 159 10390 21.99 1459 1517 403.5
C 9 206 4331 6.97 1459 1517 403.5
D 1 4 283228 650.36 1386 1438 433.3
D 14 52 119883 273.36 1386 1438 433.3
D 13 221 82486 187.05 1386 1438 433.3

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