ASTROSAT CZTI

Data Quality Report

Orbit 58583

Creation date: 2026-07-26T22:09:30.216911
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_044T04_9000006592_58583cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58583cztM0_level2_quad_clean.evt
Size (bytes)492,264,00092,131,200
Size469.5 MB 87.9 MB
Events in quadrant A3,443,785637,544
Events in quadrant B6,662,585528,809
Events in quadrant C4,156,240595,963
Events in quadrant D3,454,884574,919

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147523
B0241962
C0168602
D0147152

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64851392.143408%
B6485171326.414803%
C64852944.533539%
D64851011.557440%

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 7550 6485 67 67 0.89% 1.03%
B 7550 6485 1210 1210 16.03% 18.66%
C 7550 6485 216 216 2.86% 3.33%
D 7550 6485 50 50 0.66% 0.77%

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 15 233 226695 1252.38 731 712 180.4
A 13 248 130197 717.6 731 712 180.4
A 10 251 124115 683.89 731 712 180.4
B 6 255 3572928 27372.78 607 585 130.5
B 2 249 303100 2318.0 607 585 130.5
B 4 171 128623 981.08 607 585 130.5
C 4 5 461407 2364.72 701 694 194.8
C 12 241 352664 1806.57 701 694 194.8
C 13 3 235768 1206.58 701 694 194.8
D 2 249 253199 1249.24 711 680 202.1
D 8 240 129429 636.94 711 680 202.1
D 3 12 55757 272.47 711 680 202.1

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