ASTROSAT CZTI

Data Quality Report

Orbit 40143

Creation date: 2024-06-27T22:12:51.645257
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_042T01_9000005522_40143cztM0_level2.fits modeM0/AS1A12_042T01_9000005522_40143cztM0_level2_quad_clean.evt
Size (bytes)451,382,40052,223,040
Size430.5 MB 49.8 MB
Events in quadrant A2,048,121445,667
Events in quadrant B1,806,900462,964
Events in quadrant C9,825,40415,732
Events in quadrant D2,725,893384,228

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A085442
B081371
C0318851
D0108841

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A386890.232678%
B386870.180972%
C3868375897.156153%
D38682626.773526%

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 5991 3869 5 5 0.08% 0.13%
B 5991 3869 2 2 0.03% 0.05%
C 5990 3867 3744 3744 62.50% 96.82%
D 5991 3869 278 278 4.64% 7.19%

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 10 83 289313 3391.28 413 405 85.2
A 12 189 94117 1100.02 413 405 85.2
A 6 10 22558 260.04 413 405 85.2
B 4 171 103168 1302.99 414 404 78.9
B 4 170 35921 450.34 414 404 78.9
B 0 190 24699 308.05 414 404 78.9
C 9 187 9223240 284980.17 135 136 32.4
C 15 214 57925 1785.59 135 136 32.4
C 0 10 5857 176.77 135 136 32.4
D 12 0 432485 4654.76 383 372 92.8
D 12 227 338612 3643.55 383 372 92.8
D 1 47 307799 3311.63 383 372 92.8

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