ASTROSAT CZTI

Data Quality Report

Orbit 40971

Creation date: 2024-06-27T22:22:51.701218
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_052T04_9000005582_40971cztM0_level2.fits modeM0/AS1A12_052T04_9000005582_40971cztM0_level2_quad_clean.evt
Size (bytes)306,619,20089,530,560
Size292.4 MB 85.4 MB
Events in quadrant A3,112,335607,431
Events in quadrant B2,460,774613,725
Events in quadrant C2,695,251574,457
Events in quadrant D2,658,665535,635

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126243
B0113452
C0115232
D0119812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5426160.294877%
B5426340.626613%
C5426581.068927%
D5426861.584961%

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 7099 5427 10 10 0.14% 0.18%
B 7099 5426 19 19 0.27% 0.35%
C 7099 5427 56 56 0.79% 1.03%
D 7099 5427 70 70 0.99% 1.29%

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 488574 4033.05 588 577 121.0
A 12 189 222819 1836.72 588 577 121.0
A 13 248 122867 1010.67 588 577 121.0
B 0 186 86509 764.91 582 566 112.4
B 5 255 83984 742.43 582 566 112.4
B 12 111 14321 122.42 582 566 112.4
C 15 214 235621 1750.66 572 576 134.3
C 0 10 185801 1379.59 572 576 134.3
C 14 254 34879 255.49 572 576 134.3
D 2 249 308208 2190.03 573 556 140.5
D 12 233 96225 681.02 573 556 140.5
D 13 249 26392 183.91 573 556 140.5

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