ASTROSAT CZTI

Data Quality Report

Orbit 53863

Creation date: 2025-09-13T15:26:59.252695
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_057T04_9000006508_53863cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53863cztM0_level2_quad_clean.evt
Size (bytes)650,661,12082,166,400
Size620.5 MB 78.4 MB
Events in quadrant A2,993,387596,491
Events in quadrant B3,628,464628,159
Events in quadrant C6,967,682473,156
Events in quadrant D10,033,062372,593

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131101
B0147991
C0247401
D0339631

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5971951.591023%
B59711943.249037%
C5971125521.018255%
D5971221537.095964%

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 7181 5972 65 65 0.91% 1.09%
B 7181 5972 92 92 1.28% 1.54%
C 7181 5972 1163 1163 16.20% 19.47%
D 7181 5972 2267 2267 31.57% 37.96%

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 0 8 158050 966.61 660 642 162.8
A 5 241 74041 450.73 660 642 162.8
A 8 249 49918 302.59 660 642 162.8
B 5 185 619736 4449.33 651 629 139.1
B 4 170 204334 1463.97 651 629 139.1
B 0 213 83761 597.44 651 629 139.1
C 1 241 2141863 13257.21 582 578 161.5
C 15 224 1972684 12209.78 582 578 161.5
C 13 3 248001 1531.85 582 578 161.5
D 8 176 7695116 49161.13 536 511 156.5
D 7 70 38352 241.77 536 511 156.5
D 2 249 35419 223.03 536 511 156.5

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