ASTROSAT CZTI

Data Quality Report

Orbit 31139

Creation date: 2024-06-27T20:23:50.084641
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/AS1A10_071T66_9000004498_31139cztM0_level2.evt modeM0/AS1A10_071T66_9000004498_31139cztM0_level2_quad_clean.evt
Size (bytes)591,324,48094,389,120
Size563.9 MB 90.0 MB
Events in quadrant A3,330,050616,306
Events in quadrant B5,451,373613,119
Events in quadrant C3,701,499585,910
Events in quadrant D4,962,841566,648

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142672
B0210643
C0152862
D0195842

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6834340.497512%
B6833851.243963%
C68331432.092785%
D68331382.019611%

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 7569 6835 14 14 0.18% 0.20%
B 7568 6834 4 4 0.05% 0.06%
C 7568 6834 36 36 0.48% 0.53%
D 7568 6834 98 98 1.29% 1.43%

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 12 96 79076 465.13 839 823 168.2
A 13 254 13294 74.13 839 823 168.2
A 11 29 11254 62.0 839 823 168.2
B 6 159 1955480 12129.43 833 812 161.2
B 0 190 81812 502.63 833 812 161.2
B 0 183 70425 431.97 833 812 161.2
C 0 10 283801 1492.22 802 809 189.6
C 14 238 127851 669.89 802 809 189.6
C 10 22 55441 288.08 802 809 189.6
D 8 195 1510414 7778.03 806 786 194.1
D 13 249 282038 1449.09 806 786 194.1
D 2 250 54896 278.79 806 786 194.1

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