ASTROSAT CZTI

Data Quality Report

Orbit 06976

Creation date: 2024-06-27T15:13:58.191683
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/AS1A02_090T02_9000000956_06976cztM0_level2.evt modeM0/AS1A02_090T02_9000000956_06976cztM0_level2_quad_clean.evt
Size (bytes)438,312,96077,952,960
Size418.0 MB 74.3 MB
Events in quadrant A3,147,881484,715
Events in quadrant B3,383,202491,340
Events in quadrant C3,012,522488,348
Events in quadrant D3,310,995464,912

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129412
B0136391
C0126771
D0134341

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6175731.182186%
B61751191.927126%
C6175400.647773%
D6175861.392713%

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 7470 6176 0 0 0.00% 0.00%
B 7470 6176 45 45 0.60% 0.73%
C 7470 6176 0 0 0.00% 0.00%
D 7470 6176 20 20 0.27% 0.32%

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 14 48499 293.11 798 782 162.8
A 0 23 19181 113.02 798 782 162.8
A 0 226 9066 50.89 798 782 162.8
B 10 252 221428 1487.27 789 772 148.4
B 0 228 40442 267.38 789 772 148.4
B 0 214 26643 174.38 789 772 148.4
C 13 61 6002 29.7 770 775 176.0
C 1 16 5241 25.37 770 775 176.0
C 8 222 2598 10.36 770 775 176.0
D 8 195 155378 812.23 776 750 190.4
D 2 14 106608 556.05 776 750 190.4
D 12 233 72405 376.39 776 750 190.4

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