ASTROSAT CZTI

Data Quality Report

Orbit 46531

Creation date: 2024-06-27T23:24:19.325477
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/AS1A13_091T05_9000006224_46531cztM0_level2.fits modeM0/AS1A13_091T05_9000006224_46531cztM0_level2_quad_clean.evt
Size (bytes)537,851,520106,712,640
Size512.9 MB 101.8 MB
Events in quadrant A7,904,391664,874
Events in quadrant B4,531,223747,069
Events in quadrant C3,025,446723,476
Events in quadrant D3,949,365646,652

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0278332
B0176612
C0134872
D0162892

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A643983913.029974%
B64392654.115546%
C6440250.388199%
D64401882.919255%

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 7589 6439 654 654 8.62% 10.16%
B 7589 6439 141 141 1.86% 2.19%
C 7590 6441 7 7 0.09% 0.11%
D 7590 6440 157 157 2.07% 2.44%

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 3045061 20468.33 721 705 148.7
A 13 248 1312740 8821.3 721 705 148.7
A 9 191 737844 4956.06 721 705 148.7
B 10 128 569680 3854.65 746 725 147.6
B 4 171 446103 3017.42 746 725 147.6
B 3 112 173005 1167.19 746 725 147.6
C 9 54 84910 482.8 737 743 174.3
C 14 254 40785 229.69 737 743 174.3
C 1 3 20858 115.38 737 743 174.3
D 8 176 737144 4036.35 726 705 182.5
D 13 249 169820 926.9 726 705 182.5
D 4 237 63838 346.03 726 705 182.5

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