ASTROSAT CZTI

Data Quality Report

Orbit 58295

Creation date: 2026-07-07T13:37:17.038292
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_58295cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58295cztM0_level2_quad_clean.evt
Size (bytes)501,661,44094,671,360
Size478.4 MB 90.3 MB
Events in quadrant A5,159,167579,879
Events in quadrant B4,635,642649,621
Events in quadrant C3,408,660617,369
Events in quadrant D4,858,612563,393

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198012
B0181272
C0149342
D0189302

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A653279812.216779%
B65326139.384568%
C65321872.862829%
D65323805.817514%

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 8827 6532 641 641 7.26% 9.81%
B 8827 6532 317 317 3.59% 4.85%
C 8827 6533 82 82 0.93% 1.26%
D 8827 6532 273 273 3.09% 4.18%

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 12 114 2101437 11875.16 720 703 176.9
A 8 246 89252 500.56 720 703 176.9
A 4 249 63947 357.51 720 703 176.9
B 10 128 1033285 6785.82 714 689 152.2
B 4 206 355527 2331.86 714 689 152.2
B 2 249 132854 868.54 714 689 152.2
C 12 249 187455 944.99 719 715 197.6
C 15 204 186260 938.95 719 715 197.6
C 6 223 66681 333.82 719 715 197.6
D 2 249 694446 3458.91 709 678 200.6
D 12 110 563928 2808.19 709 678 200.6
D 8 160 490744 2443.31 709 678 200.6

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