ASTROSAT CZTI

Data Quality Report

Orbit 57209

Creation date: 2026-04-29T21:47:45.552610
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_070T08_9000006568_57209cztM0_level2.fits modeM0/AS1A14_070T08_9000006568_57209cztM0_level2_quad_clean.evt
Size (bytes)723,971,52092,131,200
Size690.4 MB 87.9 MB
Events in quadrant A3,289,309679,477
Events in quadrant B3,409,914740,428
Events in quadrant C8,110,290538,797
Events in quadrant D11,426,420325,829

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153180
B0151670
C0291590
D0389831

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7254620.854701%
B7254280.385994%
C7254152020.953956%
D7253349648.200745%

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 7254 7254 52 52 0.72% 0.72%
B 7254 7254 6 6 0.08% 0.08%
C 7254 7254 1185 1185 16.34% 16.34%
D 7253 7253 2957 2957 40.77% 40.77%

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 95 247857 1321.24 763 746 187.0
A 4 236 41611 218.5 763 746 187.0
A 4 249 17908 91.76 763 746 187.0
B 0 199 100293 610.29 762 731 163.1
B 5 185 86837 527.8 762 731 163.1
B 1 238 53374 322.69 762 731 163.1
C 15 224 4618688 24785.07 680 675 186.3
C 12 254 578819 3102.92 680 675 186.3
C 12 252 115587 616.74 680 675 186.3
D 12 33 8845085 61842.16 504 478 143.0
D 8 240 239504 1671.28 504 478 143.0
D 2 31 111770 778.16 504 478 143.0

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