ASTROSAT CZTI

Data Quality Report

Orbit 47934

Creation date: 2024-08-09T02:24:24.537136
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_025T02_9000006380_47934cztM0_level2.fits modeM0/AS1A13_025T02_9000006380_47934cztM0_level2_quad_clean.evt
Size (bytes)2,080,321,920440,383,680
Size1.9 GB 420.0 MB
Events in quadrant A29,861,4072,847,205
Events in quadrant B13,000,2053,010,515
Events in quadrant C12,497,0332,943,486
Events in quadrant D19,443,2482,568,599

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01086962
B0591112
C0591112
D0787222

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05740
B05740
C05740
D05740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2855317796.230519%
B285554701.645946%
C285551910.668885%
D2855520587.207144%

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 31528 28556 748 748 2.37% 2.62%
B 31529 28558 9 9 0.03% 0.03%
C 31529 28558 22 22 0.07% 0.08%
D 31528 28557 1619 1619 5.14% 5.67%

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 15492049 23889.39 3114 3036 648.4
A 0 31 2092863 3223.23 3114 3036 648.4
A 13 248 149824 226.4 3114 3036 648.4
B 5 255 142593 225.04 3135 3031 620.2
B 7 221 91500 142.65 3135 3031 620.2
B 12 111 80677 125.2 3135 3031 620.2
C 12 2 104077 138.78 3107 3129 727.4
C 14 254 64070 83.78 3107 3129 727.4
C 1 3 55070 71.4 3107 3129 727.4
D 2 37 5851576 7638.81 3043 2945 765.6
D 15 217 815766 1061.61 3043 2945 765.6
D 14 34 289352 374.07 3043 2945 765.6

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