ASTROSAT CZTI

Data Quality Report

Orbit 38856

Creation date: 2024-06-27T21:57:19.099081
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_077T06_9000005408_38856cztM0_level2.fits modeM0/AS1A12_077T06_9000005408_38856cztM0_level2_quad_clean.evt
Size (bytes)379,872,00092,085,120
Size362.3 MB 87.8 MB
Events in quadrant A2,843,258634,091
Events in quadrant B2,572,677649,998
Events in quadrant C2,614,103619,909
Events in quadrant D5,593,905491,017

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119203
B0116382
C0114382
D0205422

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5619110.195764%
B5619260.462716%
C5619120.213561%
D561987315.536572%

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 7381 5620 9 9 0.12% 0.16%
B 7381 5620 13 13 0.18% 0.23%
C 7381 5620 7 7 0.09% 0.12%
D 7381 5620 858 858 11.62% 15.27%

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 422464 3391.42 611 601 124.4
A 9 143 25238 198.06 611 601 124.4
A 12 189 11968 91.38 611 601 124.4
B 5 184 95992 807.27 609 592 118.2
B 4 171 35235 293.15 609 592 118.2
B 5 172 19605 160.89 609 592 118.2
C 15 214 234383 1681.65 597 601 139.0
C 14 254 31951 225.51 597 601 139.0
C 0 10 15241 105.31 597 601 139.0
D 12 227 2310259 17478.69 543 527 132.1
D 2 250 478235 3615.01 543 527 132.1
D 2 249 278435 2103.04 543 527 132.1

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