ASTROSAT CZTI

Data Quality Report

Orbit 28755

Creation date: 2024-06-27T19:55:52.562134
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/AS1A10_093T01_9000004128_28755cztM0_level2.evt modeM0/AS1A10_093T01_9000004128_28755cztM0_level2_quad_clean.evt
Size (bytes)966,617,280118,080,000
Size921.8 MB 112.6 MB
Events in quadrant A4,774,959762,122
Events in quadrant B5,200,369765,440
Events in quadrant C9,398,223695,429
Events in quadrant D9,235,672668,838

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206622
B0217502
C0351242
D0341083

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02000
B02000
C02000
D02000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9866960.973039%
B98661721.743361%
C98667457.551186%
D9865117011.860112%

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 11111 9866 8 8 0.07% 0.08%
B 11111 9866 69 69 0.62% 0.70%
C 11111 9866 64 64 0.58% 0.65%
D 11110 9865 953 953 8.58% 9.66%

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 15 174 87070 356.05 1190 1162 241.3
A 14 239 86554 353.92 1190 1162 241.3
A 13 254 17397 67.29 1190 1162 241.3
B 5 255 401293 1764.8 1176 1145 226.7
B 4 80 118456 517.38 1176 1145 226.7
B 0 183 37920 162.19 1176 1145 226.7
C 3 233 4773554 18220.08 1117 1122 261.9
C 14 238 201433 764.74 1117 1122 261.9
C 14 254 37186 137.68 1117 1122 261.9
D 1 52 2903264 11053.21 1102 1069 262.6
D 8 195 1879268 7153.25 1102 1069 262.6
D 12 233 93776 353.08 1102 1069 262.6

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