ASTROSAT CZTI

Data Quality Report

Orbit 37305

Creation date: 2024-06-27T21:38:13.414115
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_094T24_9000005306_37305cztM0_level2.evt modeM0/AS1A10_094T24_9000005306_37305cztM0_level2_quad_clean.evt
Size (bytes)97,297,92023,538,240
Size92.8 MB 22.4 MB
Events in quadrant A687,347152,970
Events in quadrant B570,773159,345
Events in quadrant C698,054159,771
Events in quadrant D904,921148,501

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A028042
B024721
C027771
D034871

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1211141.156069%
B121130.247729%
C1211241.981833%
D1211988.092486%

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 1211 1211 10 10 0.83% 0.83%
B 1211 1211 0 0 0.00% 0.00%
C 1211 1211 18 18 1.49% 1.49%
D 1211 1211 75 75 6.19% 6.19%

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 92978 3167.83 138 136 29.3
A 13 248 39829 1354.35 138 136 29.3
A 9 143 11136 375.33 138 136 29.3
B 0 213 15477 551.99 137 134 27.8
B 5 255 9152 324.43 137 134 27.8
B 0 221 4383 152.86 137 134 27.8
C 0 10 92696 2757.54 137 137 33.6
C 15 214 54853 1630.12 137 137 33.6
C 14 254 13607 401.3 137 137 33.6
D 2 249 295636 8622.93 137 133 34.3
D 10 199 24472 710.22 137 133 34.3
D 10 253 21883 634.68 137 133 34.3

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