ASTROSAT CZTI

Data Quality Report

Orbit 27086

Creation date: 2024-06-27T19:36:19.814451
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_236T01_9000003908_27086cztM0_level2.evt modeM0/AS1T03_236T01_9000003908_27086cztM0_level2_quad_clean.evt
Size (bytes)28,238,4007,496,640
Size26.9 MB 7.1 MB
Events in quadrant A199,17348,256
Events in quadrant B207,32650,434
Events in quadrant C200,04548,660
Events in quadrant D221,67847,042

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08050
B08240
C08030
D08750

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A338123.550296%
B338175.029586%
C338195.621302%
D33810.295858%

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 338 338 0 0 0.00% 0.00%
B 338 338 0 0 0.00% 0.00%
C 338 338 0 0 0.00% 0.00%
D 338 338 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 8 192 3450 272.12 49 48 12.5
A 14 235 1196 91.83 49 48 12.5
A 12 189 1157 88.71 49 48 12.5
B 3 112 4025 321.65 50 49 12.4
B 15 33 1325 103.23 50 49 12.4
B 0 219 1313 102.25 50 49 12.4
C 14 238 7770 571.8 49 49 13.5
C 13 61 344 21.85 49 49 13.5
C 15 208 183 9.92 49 49 13.5
D 1 52 34844 2520.83 48 47 13.8
D 3 238 1482 103.96 48 47 13.8
D 3 254 1006 69.47 48 47 13.8

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