ASTROSAT CZTI

Data Quality Report

Orbit 45678

Creation date: 2024-06-27T23:14:56.444417
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_071T05_9000006120_45678cztM0_level2.fits modeM0/AS1A13_071T05_9000006120_45678cztM0_level2_quad_clean.evt
Size (bytes)222,768,00042,808,320
Size212.4 MB 40.8 MB
Events in quadrant A2,465,478280,866
Events in quadrant B1,577,077295,476
Events in quadrant C1,936,286283,550
Events in quadrant D2,071,308257,391

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A089583
B062271
C073681
D078661

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A249825910.368295%
B24981907.606085%
C24982269.047238%
D249826510.608487%

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 3618 2498 13 13 0.36% 0.52%
B 3618 2498 35 35 0.97% 1.40%
C 3617 2497 129 129 3.57% 5.17%
D 3618 2498 126 126 3.48% 5.04%

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 1178325 17072.34 323 315 69.0
A 13 248 24331 348.05 323 315 69.0
A 2 79 6301 86.75 323 315 69.0
B 5 172 150822 2278.32 321 310 66.1
B 3 112 35269 529.18 321 310 66.1
B 0 189 22976 343.1 321 310 66.1
C 9 54 554328 7378.71 314 314 75.1
C 14 254 88455 1173.92 314 314 75.1
C 2 14 54628 723.39 314 314 75.1
D 1 52 641111 7819.59 318 308 81.9
D 13 249 155348 1891.92 318 308 81.9
D 5 171 32360 391.12 318 308 81.9

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