ASTROSAT CZTI

Data Quality Report

Orbit 58280

Creation date: 2026-07-06T13:15:35.145885
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/AS1A14_044T03_9000006588_58280cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58280cztM0_level2_quad_clean.evt
Size (bytes)522,371,52094,561,920
Size498.2 MB 90.2 MB
Events in quadrant A3,739,980633,041
Events in quadrant B4,047,690673,620
Events in quadrant C5,758,708561,715
Events in quadrant D5,290,839546,485

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152631
B0163291
C0216091
D0202331

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64341592.471247%
B64342734.243084%
C643476911.952129%
D64344346.745415%

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 7564 6434 54 54 0.71% 0.84%
B 7564 6434 108 108 1.43% 1.68%
C 7564 6435 739 739 9.77% 11.48%
D 7564 6434 298 298 3.94% 4.63%

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 3 14 300045 1676.27 723 704 178.6
A 4 238 248846 1389.56 723 704 178.6
A 10 251 116640 649.23 723 704 178.6
B 4 206 316702 2096.03 711 687 150.8
B 0 153 149063 984.13 711 687 150.8
B 0 156 140931 930.19 711 687 150.8
C 12 249 2337306 12536.87 677 671 186.4
C 13 3 441300 2364.13 677 671 186.4
C 6 223 223101 1193.41 677 671 186.4
D 12 110 2059833 10632.95 682 652 193.7
D 2 249 195858 1007.98 682 652 193.7
D 2 31 56521 288.49 682 652 193.7

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