ASTROSAT CZTI

Data Quality Report

Orbit 57790

Creation date: 2026-06-03T14:33:32.151397
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_083T16_9000006580_57790cztM0_level2.fits modeM0/AS1A14_083T16_9000006580_57790cztM0_level2_quad_clean.evt
Size (bytes)664,678,08099,357,120
Size633.9 MB 94.8 MB
Events in quadrant A3,221,236704,319
Events in quadrant B3,922,166752,245
Events in quadrant C12,429,329411,572
Events in quadrant D4,453,974622,551

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151620
B0170060
C0421030
D0185740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7436130.174825%
B74361331.788596%
C7436335145.064551%
D74361732.326520%

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 7436 7436 0 0 0.00% 0.00%
B 7436 7436 43 43 0.58% 0.58%
C 7436 7436 2854 2854 38.38% 38.38%
D 7436 7436 159 159 2.14% 2.14%

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 3 128 114275 579.37 794 773 195.9
A 3 245 15575 75.56 794 773 195.9
A 7 64 15001 72.63 794 773 195.9
B 4 80 338762 2020.45 784 755 167.3
B 4 158 139555 829.68 784 755 167.3
B 10 247 82107 486.28 784 755 167.3
C 9 38 7044802 39860.39 649 643 176.7
C 15 224 2695576 15249.67 649 643 176.7
C 14 246 52580 293.89 649 643 176.7
D 2 153 603255 2819.75 764 730 213.7
D 3 12 219581 1024.2 764 730 213.7
D 12 0 165869 772.83 764 730 213.7

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