ASTROSAT CZTI

Data Quality Report

Orbit 39707

Creation date: 2024-06-27T22:08:01.927805
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/AS1A12_022T01_9000005494_39707cztM0_level2.fits modeM0/AS1A12_022T01_9000005494_39707cztM0_level2_quad_clean.evt
Size (bytes)416,157,12098,913,600
Size396.9 MB 94.3 MB
Events in quadrant A5,084,715621,769
Events in quadrant B3,234,010708,140
Events in quadrant C3,184,303678,369
Events in quadrant D3,493,474619,644

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0188492
B0129181
C0127211
D0138061

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A525075614.400000%
B52501763.352381%
C5250240.457143%
D52501773.371429%

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 7341 5250 527 527 7.18% 10.04%
B 7342 5251 89 89 1.21% 1.69%
C 7342 5251 23 23 0.31% 0.44%
D 7342 5251 141 141 1.92% 2.69%

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 13 248 1249973 10200.5 605 595 122.5
A 15 174 519355 4235.4 605 595 122.5
A 15 222 497916 4060.36 605 595 122.5
B 5 172 637975 5402.11 633 619 118.0
B 0 190 64714 543.25 633 619 118.0
B 5 255 26462 219.04 633 619 118.0
C 15 208 317792 2194.47 632 637 144.5
C 15 214 217173 1498.26 632 637 144.5
C 9 187 116040 798.5 632 637 144.5
D 12 227 489948 3196.16 628 611 153.1
D 12 233 356814 2326.58 628 611 153.1
D 2 153 61990 400.9 628 611 153.1

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