ASTROSAT CZTI

Data Quality Report

Orbit 08833

Creation date: 2024-06-27T15:37:49.760337
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/AS1G07_087T01_9000001228_08833cztM0_level2.evt modeM0/AS1G07_087T01_9000001228_08833cztM0_level2_quad_clean.evt
Size (bytes)561,432,960105,341,760
Size535.4 MB 100.5 MB
Events in quadrant A5,265,873674,131
Events in quadrant B3,550,770690,091
Events in quadrant C3,294,107663,068
Events in quadrant D4,387,649644,800

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0207184
B0156493
C0152663
D0181813

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74411592.136810%
B7441590.792904%
C7441330.443489%
D7441931.249832%

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 7706 7443 76 76 0.99% 1.02%
B 7706 7443 9 9 0.12% 0.12%
C 7706 7443 4 4 0.05% 0.05%
D 7706 7443 54 54 0.70% 0.73%

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 5 1196386 6778.07 865 847 176.4
A 15 223 523297 2962.01 865 847 176.4
A 15 239 160495 905.12 865 847 176.4
B 0 214 64447 380.31 876 856 167.2
B 4 48 23316 134.33 876 856 167.2
B 5 255 20393 116.84 876 856 167.2
C 14 234 21374 106.56 830 834 192.8
C 1 3 18198 90.08 830 834 192.8
C 1 16 10693 51.15 830 834 192.8
D 1 52 387155 1782.68 825 803 216.7
D 2 152 232947 1071.14 825 803 216.7
D 8 195 229197 1053.84 825 803 216.7

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