ASTROSAT CZTI

Data Quality Report

Orbit 40747

Creation date: 2024-06-27T22:19:55.912215
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/AS1A12_068T02_9000005564_40747cztM0_level2.fits modeM0/AS1A12_068T02_9000005564_40747cztM0_level2_quad_clean.evt
Size (bytes)190,005,12035,781,120
Size181.2 MB 34.1 MB
Events in quadrant A1,279,120253,900
Events in quadrant B1,051,192265,842
Events in quadrant C2,450,454216,463
Events in quadrant D2,081,259189,745

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A051142
B044871
C087421
D076606

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2175130.597701%
B217570.321839%
C217540318.528736%
D217446821.527139%

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 3938 2176 6 6 0.15% 0.28%
B 3938 2176 2 2 0.05% 0.09%
C 3938 2176 397 397 10.08% 18.24%
D 3938 2176 207 207 5.26% 9.51%

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 212240 3957.0 255 250 53.6
A 12 189 33327 617.41 255 250 53.6
A 13 248 23641 436.62 255 250 53.6
B 0 229 25670 500.61 255 248 50.8
B 5 255 7979 152.24 255 248 50.8
B 12 111 6239 117.98 255 248 50.8
C 9 187 1420431 25948.64 229 230 54.7
C 15 214 88259 1608.39 229 230 54.7
C 0 10 36092 655.24 229 230 54.7
D 12 128 782246 13545.46 227 220 57.7
D 2 249 244845 4237.15 227 220 57.7
D 2 250 78528 1356.37 227 220 57.7

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