ASTROSAT CZTI

Data Quality Report

Orbit 04245

Creation date: 2024-06-27T14:39:17.910914
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_240T01_9000000536_04245cztM0_level2.evt modeM0/AS1G05_240T01_9000000536_04245cztM0_level2_quad_clean.evt
Size (bytes)641,856,96071,864,640
Size612.1 MB 68.5 MB
Events in quadrant A4,573,329415,435
Events in quadrant B3,918,278415,892
Events in quadrant C3,554,113406,327
Events in quadrant D6,857,597388,662

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190813
B0169482
C0163312
D0259562

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79043143.972672%
B79041792.264676%
C79041031.303138%
D79044896.186741%

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 8599 7907 44 44 0.51% 0.56%
B 8599 7907 4 4 0.05% 0.05%
C 8599 7907 0 0 0.00% 0.00%
D 8599 7907 296 296 3.44% 3.74%

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 15 637815 3327.52 932 909 191.4
A 15 169 96412 498.96 932 909 191.4
A 0 199 83011 428.94 932 909 191.4
B 4 81 61652 326.48 950 928 186.0
B 15 204 43524 229.02 950 928 186.0
B 14 167 39729 208.61 950 928 186.0
C 13 61 7485 30.76 909 913 213.6
C 10 65 3216 10.78 909 913 213.6
C 7 247 2821 8.93 909 913 213.6
D 2 63 1327938 6095.53 892 865 217.7
D 11 132 1163921 5342.17 892 865 217.7
D 2 232 412900 1892.57 892 865 217.7

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