ASTROSAT CZTI

Data Quality Report

Orbit 52928

Creation date: 2025-07-17T03:01:40.379063
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_011T06_9000006484_52928cztM0_level2.fits modeM0/AS1C09_011T06_9000006484_52928cztM0_level2_quad_clean.evt
Size (bytes)904,282,56076,858,560
Size862.4 MB 73.3 MB
Events in quadrant A17,824,85812,170
Events in quadrant B3,435,448692,565
Events in quadrant C4,776,033591,378
Events in quadrant D6,893,918543,178

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0577643
B0153062
C0192642
D0255692

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7002690598.614682%
B7002871.242502%
C70034876.954163%
D700381711.666429%

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 7812 7002 6342 6342 81.18% 90.57%
B 7812 7003 14 14 0.18% 0.20%
C 7813 7004 392 392 5.02% 5.60%
D 7813 7004 658 658 8.42% 9.39%

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 16218227 244443.3 259 252 66.3
A 0 8 195178 2938.0 259 252 66.3
A 4 254 87609 1316.68 259 252 66.3
B 10 254 208226 1336.45 721 695 155.3
B 4 81 131276 840.91 721 695 155.3
B 0 182 36298 229.28 721 695 155.3
C 7 80 648617 3455.76 685 677 187.5
C 2 12 463190 2466.8 685 677 187.5
C 14 254 374232 1992.34 685 677 187.5
D 8 176 1789584 9179.14 675 643 194.9
D 15 78 752289 3856.73 675 643 194.9
D 10 172 606718 3109.8 675 643 194.9

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