ASTROSAT CZTI

Data Quality Report

Orbit 01349

Creation date: 2024-06-27T14:11:20.887498
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/AS1G04_002T02_9000000230_01349cztM0_level2.evt modeM0/AS1G04_002T02_9000000230_01349cztM0_level2_quad_clean.evt
Size (bytes)1,185,624,000103,726,080
Size1.1 GB 98.9 MB
Events in quadrant A9,372,308661,767
Events in quadrant B9,888,813676,934
Events in quadrant C8,088,658666,722
Events in quadrant D8,093,635648,012

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0328552
B0343651
C0289761
D0290341

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70052763.940043%
B7005700.999286%
C700540.057102%
D7005901.284797%

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 7525 7005 727 727 9.66% 10.38%
B 7525 7005 845 845 11.23% 12.06%
C 7525 7006 169 169 2.25% 2.41%
D 7525 7006 425 425 5.65% 6.07%

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 15 127 1109256 2172.89 2105 2111 509.5
A 0 253 61934 117.41 2105 2111 509.5
A 3 80 50958 95.87 2105 2111 509.5
B 8 4 1066018 2023.18 2219 2230 525.8
B 12 52 127203 237.68 2219 2230 525.8
B 6 53 95233 176.88 2219 2230 525.8
C 15 241 282382 507.13 1984 2047 552.8
C 3 79 23993 39.7 1984 2047 552.8
C 3 111 23422 38.67 1984 2047 552.8
D 9 53 274165 480.69 1933 1979 566.2
D 15 13 191223 334.21 1933 1979 566.2
D 1 83 179037 312.69 1933 1979 566.2

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