ASTROSAT CZTI

Data Quality Report

Orbit 10958

Creation date: 2024-06-27T16:06:15.126608
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/AS1T01_193T01_9000001590_10958cztM0_level2.evt modeM0/AS1T01_193T01_9000001590_10958cztM0_level2_quad_clean.evt
Size (bytes)575,182,08097,018,560
Size548.5 MB 92.5 MB
Events in quadrant A4,788,672617,605
Events in quadrant B4,330,271638,762
Events in quadrant C3,149,031642,904
Events in quadrant D4,699,226573,482

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184392
B0169851
C0137021
D0182871

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66735057.567811%
B66734076.099206%
C66731021.528548%
D66736008.991458%

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 7798 6673 314 314 4.03% 4.71%
B 7798 6674 207 207 2.65% 3.10%
C 7798 6674 0 0 0.00% 0.00%
D 7798 6673 452 452 5.80% 6.77%

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 8 5 1420193 8583.04 816 797 165.4
A 13 210 155099 933.06 816 797 165.4
A 8 15 29236 171.97 816 797 165.4
B 4 239 964565 6299.07 819 802 153.0
B 0 214 46167 296.5 819 802 153.0
B 15 85 35564 227.2 819 802 153.0
C 13 61 6028 28.46 806 812 183.3
C 14 67 2480 9.1 806 812 183.3
C 3 202 1962 6.27 806 812 183.3
D 10 253 1377520 7515.67 773 751 183.2
D 1 52 113682 616.48 773 751 183.2
D 13 104 74231 401.12 773 751 183.2

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