ASTROSAT CZTI

Data Quality Report

Orbit 37327

Creation date: 2024-06-27T21:38:30.634324
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/AS1A11_030T02_9000005310_37327cztM0_level2.evt modeM0/AS1A11_030T02_9000005310_37327cztM0_level2_quad_clean.evt
Size (bytes)609,059,52082,998,720
Size580.8 MB 79.2 MB
Events in quadrant A3,090,211561,055
Events in quadrant B2,998,255567,140
Events in quadrant C4,393,733526,268
Events in quadrant D7,577,905460,648

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129063
B0125992
C0165462
D0265772

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5684530.932442%
B5684881.548205%
C56844958.708656%
D5684209236.805067%

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 7268 5685 29 29 0.40% 0.51%
B 7268 5685 56 56 0.77% 0.99%
C 7268 5685 413 413 5.68% 7.26%
D 7268 5685 1983 1983 27.28% 34.88%

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 10 83 285504 2169.01 646 633 131.3
A 15 237 125964 954.27 646 633 131.3
A 13 248 69190 521.99 646 633 131.3
B 5 172 210081 1702.78 644 628 123.0
B 12 18 83453 673.34 644 628 123.0
B 5 184 38784 310.19 644 628 123.0
C 1 23 1343566 9254.59 611 615 145.1
C 14 254 310736 2137.12 611 615 145.1
C 15 214 229635 1578.23 611 615 145.1
D 12 227 4612310 35700.99 519 503 129.2
D 13 249 543078 4200.19 519 503 129.2
D 2 249 236737 1828.74 519 503 129.2

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