ASTROSAT CZTI

Data Quality Report

Orbit 23500

Creation date: 2024-06-27T18:55:16.447306
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/AS1A07_100T02_9000003476_23500cztM0_level2.evt modeM0/AS1A07_100T02_9000003476_23500cztM0_level2_quad_clean.evt
Size (bytes)864,587,520149,860,800
Size824.5 MB 142.9 MB
Events in quadrant A4,615,6911,010,888
Events in quadrant B5,210,8121,020,437
Events in quadrant C5,714,613971,174
Events in quadrant D9,960,635837,206

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02080
B02080
C02080
D02080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206603
B0221142
C0236852
D0363612

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10070820.814300%
B100711741.727733%
C100712782.760401%
D10071213921.239202%

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 10940 10071 2 2 0.02% 0.02%
B 10941 10071 15 15 0.14% 0.15%
C 10941 10073 97 97 0.89% 0.96%
D 10941 10072 2021 2021 18.47% 20.07%

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 10 253 37730 151.47 1185 1157 241.5
A 13 254 17975 69.65 1185 1157 241.5
A 0 226 10393 38.25 1185 1157 241.5
B 0 189 293390 1296.71 1181 1150 225.4
B 0 230 157448 693.52 1181 1150 225.4
B 7 202 39939 172.11 1181 1150 225.4
C 8 208 845195 3179.18 1134 1137 265.5
C 14 238 178285 667.24 1134 1137 265.5
C 2 16 101062 376.37 1134 1137 265.5
D 1 52 5568746 22162.63 1035 1003 251.2
D 7 38 177751 703.55 1035 1003 251.2
D 7 238 66758 261.74 1035 1003 251.2

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