ASTROSAT CZTI

Data Quality Report

Orbit 51417

Creation date: 2025-03-31T17:57:51.139602
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/AS1A13_090T01_9000006458_51417cztM0_level2.fits modeM0/AS1A13_090T01_9000006458_51417cztM0_level2_quad_clean.evt
Size (bytes)878,135,04083,059,200
Size837.5 MB 79.2 MB
Events in quadrant A5,837,467609,731
Events in quadrant B4,998,859700,221
Events in quadrant C16,746,912114,889
Events in quadrant D4,357,249583,701

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222422
B0198482
C0546202
D0181302

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A727987812.062096%
B72794866.676741%
C7279619185.052892%
D72794245.824976%

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 7919 7283 487 487 6.15% 6.69%
B 7919 7283 156 156 1.97% 2.14%
C 7919 7280 5496 5496 69.40% 75.49%
D 7919 7283 145 145 1.83% 1.99%

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 12 250 1238602 6444.66 780 757 192.1
A 13 248 367916 1911.56 780 757 192.1
A 8 249 229849 1192.73 780 757 192.1
B 5 185 695089 4097.28 787 757 169.5
B 10 254 387931 2284.73 787 757 169.5
B 7 252 125409 735.58 787 757 169.5
C 15 179 7000509 74942.69 341 339 93.4
C 4 12 6413863 68662.16 341 339 93.4
C 15 230 787969 8432.24 341 339 93.4
D 6 42 440523 2064.9 776 749 213.0
D 3 12 131999 616.27 776 749 213.0
D 2 153 122142 569.98 776 749 213.0

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