ASTROSAT CZTI

Data Quality Report

Orbit 20160904_G05_103T01_9000000642_level2

Creation date: 2025-11-05T02:54:39.273831
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_103T01_9000000642cztM0_level2.fits modeM0/AS1G05_103T01_9000000642cztM0_level2_quad_clean.evt
Size (bytes)778,680,000822,666,240
Size742.6 MB 784.6 MB
Events in quadrant A4,745,7485,098,394
Events in quadrant B4,587,3865,147,797
Events in quadrant C4,662,3164,876,252
Events in quadrant D3,679,8843,891,938

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017540
B017540
C017540
D017540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800120
B01842370
C01764650
D02846380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01290
B01290
C01290
D01290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8607513651.585826%
B8608112191.416108%
C860797120.827147%
D860801237614.377323%

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 98157 86079 0 0 0.00% 0.00%
B 98157 86081 0 0 0.00% 0.00%
C 98157 86081 0 0 0.00% 0.00%
D 98157 85064 0 0 0.00% 0.00%

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 14 188 4634 11.08 1229 1144 314.9
A 0 29 4500 10.66 1229 1144 314.9
A 7 110 3983 9.02 1229 1144 314.9
B 2 9 3980 11.65 1208 1147 243.2
B 12 226 3281 8.77 1208 1147 243.2
B 14 254 3194 8.42 1208 1147 243.2
C 12 241 3340 6.59 1231 1135 334.7
C 1 80 3324 6.54 1231 1135 334.7
C 1 81 3258 6.34 1231 1135 334.7
D 11 82 2946 7.03 1048 947 284.2
D 1 19 2815 6.57 1048 947 284.2
D 3 14 2808 6.55 1048 947 284.2

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