ASTROSAT CZTI

Data Quality Report

Orbit 03966

Creation date: 2024-06-27T14:35:45.128064
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/AS1G05_229T02_9000000508_03966cztM0_level2.evt modeM0/AS1G05_229T02_9000000508_03966cztM0_level2_quad_clean.evt
Size (bytes)730,584,00096,724,800
Size696.7 MB 92.2 MB
Events in quadrant A5,023,456566,104
Events in quadrant B5,457,307567,839
Events in quadrant C4,692,685560,390
Events in quadrant D6,259,235525,434

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02100
B02100
C02100
D02100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216033
B0225292
C0207902
D0258062

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10231540.527808%
B10231910.889454%
C10231170.166162%
D102312582.521748%

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 12936 10233 12 12 0.09% 0.12%
B 12936 10233 48 48 0.37% 0.47%
C 12936 10233 0 0 0.00% 0.00%
D 12936 10233 231 231 1.79% 2.26%

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 0 118 214989 854.85 1229 1205 250.1
A 0 226 31575 121.44 1229 1205 250.1
A 8 4 22446 84.94 1229 1205 250.1
B 3 0 152162 639.51 1247 1218 236.0
B 10 16 150561 632.73 1247 1218 236.0
B 15 204 150006 630.38 1247 1218 236.0
C 10 65 19418 65.38 1193 1199 278.7
C 13 61 9905 31.24 1193 1199 278.7
C 8 128 7504 22.63 1193 1199 278.7
D 10 246 859518 3033.58 1164 1132 283.0
D 2 232 760444 2683.44 1164 1132 283.0
D 13 239 77473 269.79 1164 1132 283.0

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