ASTROSAT CZTI

Data Quality Report

Orbit 52893

Creation date: 2025-07-16T13:53:09.603587
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_011T08_9000006482_52893cztM0_level2.fits modeM0/AS1C09_011T08_9000006482_52893cztM0_level2_quad_clean.evt
Size (bytes)734,774,40097,413,120
Size700.7 MB 92.9 MB
Events in quadrant A8,015,480544,486
Events in quadrant B5,117,175717,301
Events in quadrant C4,859,205652,421
Events in quadrant D8,645,134529,857

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0288416
B0203481
C0195181
D0307681

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7257168423.205181%
B72574085.622158%
C72582233.072472%
D7258146320.157068%

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 7307 7257 1477 1477 20.21% 20.35%
B 7306 7256 263 263 3.60% 3.62%
C 7308 7259 208 208 2.85% 2.87%
D 7307 7258 1323 1323 18.11% 18.23%

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 9 191 3312838 19178.81 686 666 172.7
A 12 80 536595 3103.24 686 666 172.7
A 12 17 418923 2421.88 686 666 172.7
B 10 254 475798 2965.08 761 733 160.2
B 1 255 425408 2650.57 761 733 160.2
B 5 185 337438 2101.52 761 733 160.2
C 7 80 708908 3402.14 757 748 208.2
C 13 3 332855 1595.51 757 748 208.2
C 15 224 205500 983.67 757 748 208.2
D 8 176 2228415 10961.21 709 677 203.2
D 10 172 805897 3961.95 709 677 203.2
D 15 125 711069 3495.36 709 677 203.2

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