ASTROSAT CZTI

Data Quality Report

Orbit 27708

Creation date: 2024-06-27T19:43:23.299792
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_262T01_9000003988_27708cztM0_level2.evt modeM0/AS1T03_262T01_9000003988_27708cztM0_level2_quad_clean.evt
Size (bytes)499,144,320102,012,480
Size476.0 MB 97.3 MB
Events in quadrant A3,441,467656,364
Events in quadrant B4,044,067659,088
Events in quadrant C3,600,673642,890
Events in quadrant D3,537,530625,899

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149900
B0167390
C0153560
D0156280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7253370.510134%
B72541351.861042%
C72531041.433889%
D7253460.634220%

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 9063 7254 1 1 0.01% 0.01%
B 9064 7255 16 16 0.18% 0.22%
C 9063 7254 0 0 0.00% 0.00%
D 9063 7255 19 19 0.21% 0.26%

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 13 254 12221 63.21 890 868 179.6
A 8 192 8737 43.81 890 868 179.6
A 3 137 8449 42.21 890 868 179.6
B 3 112 391457 2326.34 885 863 167.9
B 12 0 65627 385.73 885 863 167.9
B 0 230 54743 320.9 885 863 167.9
C 14 238 136974 677.87 863 869 200.8
C 3 233 76303 375.7 863 869 200.8
C 8 208 21305 101.78 863 869 200.8
D 1 52 174314 849.17 861 838 204.3
D 2 250 76612 370.92 861 838 204.3
D 2 234 25419 120.32 861 838 204.3

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