ASTROSAT CZTI

Data Quality Report

Orbit 43853

Creation date: 2024-06-27T22:56:33.725350
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_087T01_9000005908_43853cztM0_level2.fits modeM0/AS1A13_087T01_9000005908_43853cztM0_level2_quad_clean.evt
Size (bytes)593,314,560110,661,120
Size565.8 MB 105.5 MB
Events in quadrant A6,108,895721,792
Events in quadrant B3,778,539782,270
Events in quadrant C6,644,376719,121
Events in quadrant D4,900,417650,788

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229381
B0157671
C0245941
D0191911

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68456549.554419%
B68452844.149014%
C68456459.422936%
D68456118.926224%

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 7705 6845 328 328 4.26% 4.79%
B 7705 6845 27 27 0.35% 0.39%
C 7705 6845 388 388 5.04% 5.67%
D 7705 6845 487 487 6.32% 7.11%

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 15 223 1731307 10393.42 800 783 166.5
A 10 83 990743 5945.64 800 783 166.5
A 10 248 226175 1353.69 800 783 166.5
B 0 200 160772 993.85 811 786 161.0
B 0 183 123613 763.02 811 786 161.0
B 5 172 85548 526.55 811 786 161.0
C 3 233 2283892 12388.74 778 785 184.3
C 0 239 948448 5142.27 778 785 184.3
C 14 254 175856 949.98 778 785 184.3
D 12 17 1114316 5605.28 784 759 198.7
D 7 80 215533 1081.1 784 759 198.7
D 5 235 199866 1002.24 784 759 198.7

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