ASTROSAT CZTI

Data Quality Report

Orbit 26280

Creation date: 2024-06-27T19:26:57.011623
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/AS1A09_079T03_9000003790_26280cztM0_level2.evt modeM0/AS1A09_079T03_9000003790_26280cztM0_level2_quad_clean.evt
Size (bytes)1,368,210,240220,685,760
Size1.3 GB 210.5 MB
Events in quadrant A9,450,6281,353,093
Events in quadrant B9,146,1291,385,901
Events in quadrant C9,855,3781,347,181
Events in quadrant D11,726,4541,314,478

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0401960
B0388000
C0407830
D0473250

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186163932.111087%
B186173011.616802%
C186174842.599774%
D186176543.512918%

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 20501 18619 73 73 0.36% 0.39%
B 20502 18620 11 11 0.05% 0.06%
C 20502 18620 77 77 0.38% 0.41%
D 20502 18620 374 374 1.82% 2.01%

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 0 13 732249 1605.01 2261 2207 454.9
A 13 254 32366 66.31 2261 2207 454.9
A 3 137 21025 41.37 2261 2207 454.9
B 5 172 94206 212.15 2264 2205 433.7
B 3 112 83419 187.28 2264 2205 433.7
B 7 219 68237 152.27 2264 2205 433.7
C 4 254 734104 1444.2 2174 2187 506.8
C 14 238 339644 665.86 2174 2187 506.8
C 3 233 241510 472.23 2174 2187 506.8
D 1 52 3092821 5907.68 2188 2136 523.2
D 12 33 96961 181.25 2188 2136 523.2
D 2 234 84989 158.37 2188 2136 523.2

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