ASTROSAT CZTI

Data Quality Report

Orbit 23461

Creation date: 2024-06-27T18:54:37.821200
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/AS1A07_100T02_9000003470_23461cztM0_level2.evt modeM0/AS1A07_100T02_9000003470_23461cztM0_level2_quad_clean.evt
Size (bytes)626,898,240108,478,080
Size597.9 MB 103.5 MB
Events in quadrant A3,211,098739,692
Events in quadrant B3,328,343768,575
Events in quadrant C3,528,521737,749
Events in quadrant D8,481,607589,415

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135392
B0139362
C0144532
D0295362

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6442230.357032%
B6441450.698649%
C6441921.428350%
D6441187129.048284%

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 7672 6443 6 6 0.08% 0.09%
B 7671 6442 8 8 0.10% 0.12%
C 7671 6441 21 21 0.27% 0.33%
D 7671 6442 1875 1875 24.44% 29.11%

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 28282 166.82 824 807 164.7
A 13 254 10830 60.86 824 807 164.7
A 10 253 8076 44.14 824 807 164.7
B 0 183 44275 282.42 829 811 153.9
B 0 228 26269 165.42 829 811 153.9
B 12 111 17605 109.12 829 811 153.9
C 14 238 129947 683.9 817 822 188.8
C 1 0 89692 470.69 817 822 188.8
C 7 247 50784 264.62 817 822 188.8
D 7 238 4831083 27377.2 738 718 176.4
D 1 52 756056 4281.05 738 718 176.4
D 12 233 44166 246.25 738 718 176.4

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