ASTROSAT CZTI

Data Quality Report

Orbit 42457

Creation date: 2024-06-27T22:40:24.147510
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/AS1C07_001T10_9000005806_42457cztM0_level2.fits modeM0/AS1C07_001T10_9000005806_42457cztM0_level2_quad_clean.evt
Size (bytes)403,067,52081,538,560
Size384.4 MB 77.8 MB
Events in quadrant A2,862,017594,271
Events in quadrant B5,982,894392,825
Events in quadrant C2,509,166575,970
Events in quadrant D3,151,975533,959

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116662
B0215732
C0109792
D0130492

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5311120.225946%
B5311184834.795707%
C5311140.263604%
D53111011.901713%

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 7104 5312 2 2 0.03% 0.04%
B 7104 5312 1656 1656 23.31% 31.17%
C 7104 5312 6 6 0.08% 0.11%
D 7104 5312 82 82 1.15% 1.54%

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 568278 4817.48 577 565 117.8
A 12 189 28452 236.64 577 565 117.8
A 2 79 12374 100.21 577 565 117.8
B 0 186 4203469 49699.33 434 422 84.6
B 5 255 40816 477.64 434 422 84.6
B 5 172 16496 190.06 434 422 84.6
C 15 214 224318 1744.22 554 557 128.3
C 14 254 61096 471.9 554 557 128.3
C 3 233 60539 467.56 554 557 128.3
D 2 16 173701 1269.49 557 541 136.4
D 1 52 147272 1075.73 557 541 136.4
D 12 6 119103 869.22 557 541 136.4

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