ASTROSAT CZTI

Data Quality Report

Orbit 24224

Creation date: 2024-06-27T19:03:41.252762
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/AS1A07_118T01_9000003586_24224cztM0_level2.evt modeM0/AS1A07_118T01_9000003586_24224cztM0_level2_quad_clean.evt
Size (bytes)319,510,08040,449,600
Size304.7 MB 38.6 MB
Events in quadrant A1,749,514247,183
Events in quadrant B2,939,577251,128
Events in quadrant C1,937,703239,863
Events in quadrant D2,810,848238,262

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A072801
B0109561
C077601
D0106731

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3499361.028865%
B349962517.862246%
C3499922.629323%
D34991785.087168%

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 4224 3499 0 0 0.00% 0.00%
B 4224 3499 455 455 10.77% 13.00%
C 4224 3499 21 21 0.50% 0.60%
D 4224 3499 88 88 2.08% 2.52%

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 3 1 9318 94.92 451 441 93.5
A 13 254 5834 57.67 451 441 93.5
A 3 137 3939 37.4 451 441 93.5
B 0 245 1275504 15845.99 408 397 80.5
B 15 33 29301 359.2 408 397 80.5
B 12 17 28581 350.25 408 397 80.5
C 2 16 128377 1251.84 427 430 102.2
C 14 238 67187 653.15 427 430 102.2
C 7 247 66813 649.49 427 430 102.2
D 8 195 963577 9002.74 434 420 107.0
D 7 238 111665 1039.82 434 420 107.0
D 12 233 92823 863.7 434 420 107.0

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