ASTROSAT CZTI

Data Quality Report

Orbit 27355

Creation date: 2024-06-27T19:39:13.024327
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/AS1T03_255T01_9000003922_27355cztM0_level2.evt modeM0/AS1T03_255T01_9000003922_27355cztM0_level2_quad_clean.evt
Size (bytes)140,713,9208,233,920
Size134.2 MB 7.9 MB
Events in quadrant A939,28431,931
Events in quadrant B950,18932,836
Events in quadrant C1,216,84629,864
Events in quadrant D1,038,19229,923

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037790
B038110
C048140
D041380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1686110.652432%
B1686201.186240%
C1686945.575326%
D1686120.711744%

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 1686 1686 0 0 0.00% 0.00%
B 1686 1686 0 0 0.00% 0.00%
C 1686 1686 19 19 1.13% 1.13%
D 1686 1686 5 5 0.30% 0.30%

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 13 254 2726 49.88 243 238 49.9
A 0 226 2060 36.53 243 238 49.9
A 3 137 2045 36.23 243 238 49.9
B 12 111 5237 106.19 243 237 47.1
B 11 111 4826 97.47 243 237 47.1
B 14 111 4697 94.73 243 237 47.1
C 2 16 231475 4269.37 229 231 54.2
C 15 208 52103 957.69 229 231 54.2
C 14 238 38448 705.59 229 231 54.2
D 1 52 149766 2646.62 233 227 56.5
D 2 120 6490 110.85 233 227 56.5
D 2 234 5299 89.77 233 227 56.5

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