ASTROSAT CZTI

Data Quality Report

Orbit 27617

Creation date: 2024-06-27T19:42:13.033619
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_257T01_9000003976_27617cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27617cztM0_level2_quad_clean.evt
Size (bytes)468,846,72098,922,240
Size447.1 MB 94.3 MB
Events in quadrant A3,223,376654,193
Events in quadrant B3,742,167679,431
Events in quadrant C3,294,751634,481
Events in quadrant D3,522,056599,052

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133910
B0148810
C0135300
D0144700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6137340.554017%
B61371442.346423%
C6137881.433925%
D6137821.336158%

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 7477 6138 3 3 0.04% 0.05%
B 7477 6138 59 59 0.79% 0.96%
C 7477 6137 3 3 0.04% 0.05%
D 7477 6138 36 36 0.48% 0.59%

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 4 2 40177 240.79 819 806 163.5
A 8 192 12673 72.58 819 806 163.5
A 13 254 10894 61.7 819 806 163.5
B 10 245 303751 1973.72 824 806 153.5
B 0 190 60307 387.66 824 806 153.5
B 4 200 57245 367.71 824 806 153.5
C 14 238 130860 705.37 794 803 184.4
C 2 16 56769 303.53 794 803 184.4
C 15 208 9318 46.18 794 803 184.4
D 7 80 239494 1284.06 784 765 185.9
D 1 52 128184 685.35 784 765 185.9
D 2 250 108085 577.25 784 765 185.9

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