ASTROSAT CZTI

Data Quality Report

Orbit 51892

Creation date: 2025-05-02T16:19:47.198060
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/AS1C09_011T05_9000006466_51892cztM0_level2.fits modeM0/AS1C09_011T05_9000006466_51892cztM0_level2_quad_clean.evt
Size (bytes)893,033,28087,730,560
Size851.7 MB 83.7 MB
Events in quadrant A6,020,390644,571
Events in quadrant B7,631,408607,011
Events in quadrant C4,978,529627,881
Events in quadrant D13,866,939272,419

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229610
B0276580
C0197400
D0462070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72412323.203977%
B7242139419.248826%
C72422533.493510%
D7242430459.431096%

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 7241 7241 182 182 2.51% 2.51%
B 7242 7242 960 960 13.26% 13.26%
C 7242 7242 200 200 2.76% 2.76%
D 7242 7242 3442 3442 47.53% 47.53%

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 12 3 1495784 8166.29 737 717 183.1
A 15 174 499021 2721.81 737 717 183.1
A 12 194 178074 968.75 737 717 183.1
B 4 170 2252530 15493.78 684 661 145.3
B 12 32 1389821 9557.99 684 661 145.3
B 4 171 228596 1568.29 684 661 145.3
C 13 3 688277 3513.29 712 705 195.7
C 15 192 332045 1693.05 712 705 195.7
C 14 245 145573 740.23 712 705 195.7
D 11 129 8029051 60905.03 472 456 131.8
D 6 42 1302741 9879.15 472 456 131.8
D 12 17 690131 5231.88 472 456 131.8

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