ASTROSAT CZTI

Data Quality Report

Orbit 21639

Creation date: 2024-06-27T18:30:32.332696
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/AS1A06_002T02_9000003206_21639cztM0_level2.evt modeM0/AS1A06_002T02_9000003206_21639cztM0_level2_quad_clean.evt
Size (bytes)517,556,16090,213,120
Size493.6 MB 86.0 MB
Events in quadrant A3,166,683592,305
Events in quadrant B3,602,392611,830
Events in quadrant C3,162,236573,828
Events in quadrant D5,325,884524,842

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131092
B0146322
C0130713
D0196702

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6150460.747967%
B61501071.739837%
C6149781.268499%
D614995515.530981%

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 7500 6151 8 8 0.11% 0.13%
B 7500 6151 39 39 0.52% 0.63%
C 7499 6150 1 1 0.01% 0.02%
D 7499 6150 803 803 10.71% 13.06%

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 5 98 49055 301.62 805 791 160.0
A 10 253 17843 106.56 805 791 160.0
A 13 254 9190 52.49 805 791 160.0
B 3 64 210176 1400.97 811 794 149.5
B 0 229 68287 451.59 811 794 149.5
B 6 36 29691 193.35 811 794 149.5
C 14 238 126346 701.21 775 782 179.1
C 9 54 5810 28.08 775 782 179.1
C 13 61 5521 26.47 775 782 179.1
D 1 52 2395281 14080.35 708 687 170.1
D 2 136 72125 420.06 708 687 170.1
D 12 235 66114 384.71 708 687 170.1

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