ASTROSAT CZTI

Data Quality Report

Orbit 42805

Creation date: 2024-06-27T22:44:26.962566
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/AS1C06_010T01_9000005824_42805cztM0_level2.fits modeM0/AS1C06_010T01_9000005824_42805cztM0_level2_quad_clean.evt
Size (bytes)353,350,08088,776,000
Size337.0 MB 84.7 MB
Events in quadrant A2,967,320602,197
Events in quadrant B3,493,133598,204
Events in quadrant C2,939,347582,384
Events in quadrant D3,274,012539,205

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121023
B0139912
C0123262
D0135692

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5217160.306690%
B52172735.232892%
C5217310.594211%
D52171011.935979%

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 7039 5218 2 2 0.03% 0.04%
B 7039 5218 204 204 2.90% 3.91%
C 7039 5218 23 23 0.33% 0.44%
D 7039 5218 98 98 1.39% 1.88%

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 636511 5433.43 572 559 117.0
A 12 189 77084 653.81 572 559 117.0
A 13 248 14940 122.87 572 559 117.0
B 0 229 597919 5524.55 567 552 108.1
B 4 171 376471 3476.56 567 552 108.1
B 0 245 78603 721.83 567 552 108.1
C 3 233 367070 2779.84 562 564 131.8
C 15 214 212911 1610.59 562 564 131.8
C 14 254 107617 811.97 562 564 131.8
D 1 52 691034 5067.65 560 543 136.3
D 10 118 192306 1407.39 560 543 136.3
D 13 249 71421 520.19 560 543 136.3

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