ASTROSAT CZTI

Data Quality Report

Orbit 47476

Creation date: 2024-07-09T09:39:55.875080
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_089T01_9000006330_47476cztM0_level2.fits modeM0/AS1A13_089T01_9000006330_47476cztM0_level2_quad_clean.evt
Size (bytes)492,232,320109,114,560
Size469.4 MB 104.1 MB
Events in quadrant A7,045,482707,489
Events in quadrant B3,116,739762,718
Events in quadrant C3,843,155726,552
Events in quadrant D3,714,759656,496

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0252722
B0136212
C0157262
D0156372

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64583735.775782%
B6458721.114896%
C6458380.588417%
D64581322.043976%

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 7623 6459 163 163 2.14% 2.52%
B 7623 6459 9 9 0.12% 0.14%
C 7623 6459 12 12 0.16% 0.19%
D 7623 6459 89 89 1.17% 1.38%

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 3998809 26107.26 731 715 153.1
A 9 191 201080 1308.37 731 715 153.1
A 0 247 20761 130.9 731 715 153.1
B 5 32 55275 378.56 746 725 144.1
B 0 198 37126 252.61 746 725 144.1
B 0 245 22919 154.02 746 725 144.1
C 3 233 656201 3776.37 734 737 173.6
C 0 207 291683 1676.25 734 737 173.6
C 1 3 21012 116.81 734 737 173.6
D 2 249 308210 1673.35 725 704 183.8
D 8 176 137498 744.39 725 704 183.8
D 2 165 128658 696.28 725 704 183.8

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