ASTROSAT CZTI

Data Quality Report

Orbit 27175

Creation date: 2024-06-27T19:37:22.786455
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_243T01_9000003918_27175cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27175cztM0_level2_quad_clean.evt
Size (bytes)623,482,56068,172,480
Size594.6 MB 65.0 MB
Events in quadrant A7,691,106353,465
Events in quadrant B3,503,524422,943
Events in quadrant C3,241,056411,822
Events in quadrant D3,983,940399,522

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0273970
B0147020
C0139940
D0164890

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6820145221.290323%
B68211592.331037%
C68211171.715291%
D68211211.773933%

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 7160 6821 1190 1190 16.62% 17.45%
B 7161 6822 36 36 0.50% 0.53%
C 7161 6822 0 0 0.00% 0.00%
D 7161 6822 60 60 0.84% 0.88%

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 6 16 4654935 29441.31 774 758 158.1
A 13 248 29579 182.32 774 758 158.1
A 13 254 11499 67.95 774 758 158.1
B 5 172 143374 891.73 825 804 159.9
B 0 190 54711 337.17 825 804 159.9
B 15 33 48964 301.23 825 804 159.9
C 14 238 125111 653.03 798 804 190.4
C 15 208 7218 33.7 798 804 190.4
C 13 61 5586 25.12 798 804 190.4
D 1 52 473780 2460.06 796 775 192.3
D 7 38 174496 903.51 796 775 192.3
D 12 233 117634 607.77 796 775 192.3

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