ASTROSAT CZTI

Data Quality Report

Orbit 51396

Creation date: 2025-03-30T06:17:48.512997
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/AS1C07_001T03_9000006456_51396cztM0_level2.fits modeM0/AS1C07_001T03_9000006456_51396cztM0_level2_quad_clean.evt
Size (bytes)300,006,72026,314,560
Size286.1 MB 25.1 MB
Events in quadrant A3,135,063172,732
Events in quadrant B1,340,479222,340
Events in quadrant C4,805,11751,941
Events in quadrant D1,638,403178,761

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05810
B0599
C06313
D0544

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120811060
B06356674
C0172981402
D07306547

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146
B0124
C0157
D0146

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A238444618.708054%
B2388602.512563%
C2355159067.515924%
D23811385.795884%

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 4252 2396 410 410 9.64% 17.11%
B 4253 2404 37 37 0.87% 1.54%
C 4248 2391 1580 1580 37.19% 66.08%
D 4253 2399 119 119 2.80% 4.96%

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 3 882959 14228.42 243 237 62.0
A 12 250 493901 7957.27 243 237 62.0
A 15 174 256782 4135.2 243 237 62.0
B 5 185 156414 2761.38 257 248 56.6
B 4 81 58235 1025.35 257 248 56.6
B 1 223 18779 327.67 257 248 56.6
C 4 12 3578494 106475.37 117 116 33.6
C 15 179 401913 11955.55 117 116 33.6
C 4 5 164323 4886.01 117 116 33.6
D 10 172 261493 3839.74 243 234 68.0
D 11 176 233181 3423.64 243 234 68.0
D 2 153 39136 571.75 243 234 68.0

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