ASTROSAT CZTI

Data Quality Report

Orbit 56216

Creation date: 2026-02-17T16:54:42.246218
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_083T04_9000006550_56216cztM0_level2.fits modeM0/AS1A14_083T04_9000006550_56216cztM0_level2_quad_clean.evt
Size (bytes)528,361,92097,067,520
Size503.9 MB 92.6 MB
Events in quadrant A5,927,498618,749
Events in quadrant B3,719,870698,037
Events in quadrant C5,556,144589,114
Events in quadrant D3,856,765585,651

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219822
B0155022
C0209482
D0157813

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64175378.368396%
B64172734.254324%
C641770010.908524%
D64162103.273067%

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 7617 6417 374 374 4.91% 5.83%
B 7617 6417 131 131 1.72% 2.04%
C 7617 6417 596 596 7.82% 9.29%
D 7616 6416 157 157 2.06% 2.45%

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 4 95 937626 5387.76 706 687 173.9
A 15 32 587957 3377.03 706 687 173.9
A 3 79 497056 2854.31 706 687 173.9
B 5 185 663911 4435.86 709 684 149.5
B 0 171 74937 496.63 709 684 149.5
B 0 63 48103 317.15 709 684 149.5
C 12 254 2085758 11229.67 678 670 185.7
C 12 252 654383 3520.71 678 670 185.7
C 6 223 60895 324.35 678 670 185.7
D 6 239 306176 1552.64 697 663 196.8
D 2 249 204668 1036.77 697 663 196.8
D 13 153 140138 708.82 697 663 196.8

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