ASTROSAT CZTI

Data Quality Report

Orbit 50737

Creation date: 2025-02-13T19:33:36.584300
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/AS1C07_001T01_9000006450_50737cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50737cztM0_level2_quad_clean.evt
Size (bytes)493,657,92089,196,480
Size470.8 MB 85.1 MB
Events in quadrant A5,227,540577,384
Events in quadrant B3,224,673638,351
Events in quadrant C5,088,256533,115
Events in quadrant D4,252,775520,123

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01262
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020105139
B013968102
C01936777
D017073109

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61843245.239327%
B61891302.100501%
C61905699.192246%
D61902884.652666%

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 7143 6193 210 210 2.94% 3.39%
B 7150 6195 54 54 0.76% 0.87%
C 7167 6200 471 471 6.57% 7.60%
D 7158 6200 236 236 3.30% 3.81%

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 4 4 773869 4715.45 659 644 164.0
A 12 80 704468 4292.22 659 644 164.0
A 3 114 193811 1178.01 659 644 164.0
B 0 200 104334 740.11 659 636 140.1
B 10 247 80811 572.22 659 636 140.1
B 8 128 69692 492.86 659 636 140.1
C 5 10 1614941 9511.18 624 619 169.7
C 0 177 204567 1201.61 624 619 169.7
C 1 3 126137 739.52 624 619 169.7
D 2 249 380575 2143.98 639 617 177.2
D 15 169 316312 1781.37 639 617 177.2
D 1 47 312889 1762.05 639 617 177.2

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