ASTROSAT CZTI

Data Quality Report

Orbit 27236

Creation date: 2024-06-27T19:38:02.872508
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_27236cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27236cztM0_level2_quad_clean.evt
Size (bytes)499,455,36077,137,920
Size476.3 MB 73.6 MB
Events in quadrant A3,399,383473,402
Events in quadrant B3,998,509470,367
Events in quadrant C3,400,734460,493
Events in quadrant D3,858,905450,677

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143290
B0160410
C0143400
D0158650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6899951.377011%
B68982453.551754%
C68991331.927816%
D68991331.927816%

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 8499 6901 0 0 0.00% 0.00%
B 8498 6900 99 99 1.16% 1.43%
C 8499 6901 0 0 0.00% 0.00%
D 8499 6901 33 33 0.39% 0.48%

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 0 13 22753 125.49 866 846 174.6
A 14 235 12103 64.48 866 846 174.6
A 12 96 11828 62.91 866 846 174.6
B 3 64 585858 3529.53 855 835 165.8
B 0 245 37499 221.2 855 835 165.8
B 12 111 20449 118.33 855 835 165.8
C 14 238 133995 687.33 827 832 193.7
C 15 208 25649 128.09 827 832 193.7
C 1 16 20746 102.79 827 832 193.7
D 1 52 554294 2758.37 832 812 200.7
D 2 250 48472 237.52 832 812 200.7
D 13 168 31265 151.77 832 812 200.7

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