ASTROSAT CZTI

Data Quality Report

Orbit 47881

Creation date: 2024-08-05T09:37:30.397838
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/AS1A13_053T01_9000006370_47881cztM0_level2.fits modeM0/AS1A13_053T01_9000006370_47881cztM0_level2_quad_clean.evt
Size (bytes)528,609,600109,235,520
Size504.1 MB 104.2 MB
Events in quadrant A6,821,474730,138
Events in quadrant B3,249,332777,572
Events in quadrant C3,015,810761,374
Events in quadrant D5,967,825577,664

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0248072
B0142572
C0136422
D0224912

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66092463.722197%
B66101281.936460%
C6609190.287487%
D6609120418.217582%

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 9019 6611 70 70 0.78% 1.06%
B 9020 6612 55 55 0.61% 0.83%
C 9019 6611 0 0 0.00% 0.00%
D 9019 6611 973 973 10.79% 14.72%

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 10 83 3955733 25819.89 737 720 153.2
A 13 248 10203 61.91 737 720 153.2
A 3 137 8205 48.86 737 720 153.2
B 7 219 204805 1392.38 748 724 146.6
B 5 255 27680 183.91 748 724 146.6
B 0 183 25335 167.91 748 724 146.6
C 14 254 29812 163.16 759 764 178.0
C 3 233 11726 61.57 759 764 178.0
C 12 2 6970 34.86 759 764 178.0
D 2 37 1784694 10386.24 693 670 171.8
D 2 165 1219251 7094.34 693 670 171.8
D 2 249 137124 794.41 693 670 171.8

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