ASTROSAT CZTI

Data Quality Report

Orbit 37202

Creation date: 2024-06-27T21:36:50.903266
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/AS1A11_079T01_9000005284_37202cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37202cztM0_level2_quad_clean.evt
Size (bytes)466,116,48079,732,800
Size444.5 MB 76.0 MB
Events in quadrant A2,953,355528,302
Events in quadrant B3,297,099527,532
Events in quadrant C3,434,277511,426
Events in quadrant D4,078,648482,244

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118243
B0130222
C0133742
D0157722

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5211190.364613%
B5211791.516024%
C5211621.189791%
D52111112.130109%

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 9306 5213 1 1 0.01% 0.02%
B 9306 5213 47 47 0.51% 0.90%
C 9306 5213 42 42 0.45% 0.81%
D 9306 5213 94 94 1.01% 1.80%

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 254793 1846.43 693 682 137.6
A 9 143 11402 77.89 693 682 137.6
A 13 254 7810 51.79 693 682 137.6
B 5 172 343760 2694.64 675 660 127.3
B 0 213 178046 1393.16 675 660 127.3
B 0 155 88879 692.86 675 660 127.3
C 10 49 356956 2364.19 655 661 150.7
C 15 214 226766 1500.31 655 661 150.7
C 0 207 154024 1017.63 655 661 150.7
D 1 52 589560 3703.28 659 643 159.0
D 2 153 241918 1517.21 659 643 159.0
D 13 249 156247 978.48 659 643 159.0

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