ASTROSAT CZTI

Data Quality Report

Orbit 58281

Creation date: 2026-07-06T21:56:17.254212
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_58281cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58281cztM0_level2_quad_clean.evt
Size (bytes)548,447,04089,323,200
Size523.0 MB 85.2 MB
Events in quadrant A3,525,522614,094
Events in quadrant B4,158,029651,346
Events in quadrant C3,427,514592,427
Events in quadrant D8,691,124398,469

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147701
B0166261
C0149391
D0302411

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64262233.470277%
B64273845.974794%
C64272083.236347%
D6427214233.328147%

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 7426 6426 48 48 0.65% 0.75%
B 7427 6427 108 108 1.45% 1.68%
C 7427 6427 96 96 1.29% 1.49%
D 7427 6427 1849 1849 24.90% 28.77%

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 12 114 303627 1701.87 718 699 178.0
A 8 246 107869 602.09 718 699 178.0
A 3 14 102244 570.49 718 699 178.0
B 4 206 726066 4895.41 698 674 148.2
B 10 247 131103 880.22 698 674 148.2
B 0 153 120355 807.68 698 674 148.2
C 13 3 328724 1723.6 693 686 190.3
C 6 223 160137 837.8 693 686 190.3
C 12 252 123241 643.94 693 686 190.3
D 12 110 5423559 30748.47 617 591 176.4
D 2 249 304331 1722.22 617 591 176.4
D 7 222 140360 792.5 617 591 176.4

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