ASTROSAT CZTI

Data Quality Report

Orbit 40362

Creation date: 2024-06-27T22:15:18.626528
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_056T02_9000005538_40362cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40362cztM0_level2_quad_clean.evt
Size (bytes)323,988,48087,393,600
Size309.0 MB 83.3 MB
Events in quadrant A3,092,872602,805
Events in quadrant B2,299,710627,941
Events in quadrant C2,489,350593,485
Events in quadrant D3,712,460464,270

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122873
B0103012
C0105572
D0145262

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51051633.192948%
B510560.117532%
C5105240.470127%
D510587017.042116%

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 6988 5106 126 126 1.80% 2.47%
B 6988 5106 1 1 0.01% 0.02%
C 6988 5106 18 18 0.26% 0.35%
D 6988 5106 344 344 4.92% 6.74%

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 444882 3934.04 556 548 112.9
A 13 248 414653 3666.4 556 548 112.9
A 2 79 28373 246.35 556 548 112.9
B 3 112 35700 321.72 565 550 109.3
B 0 230 24459 218.83 565 550 109.3
B 12 111 13366 117.3 565 550 109.3
C 15 214 219760 1698.2 552 557 129.1
C 14 254 80448 618.93 552 557 129.1
C 0 10 35953 274.22 552 557 129.1
D 2 250 1350154 10641.4 504 490 126.8
D 12 191 150919 1186.05 504 490 126.8
D 12 227 104627 821.07 504 490 126.8

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