ASTROSAT CZTI

Data Quality Report

Orbit 16461

Creation date: 2024-06-27T17:23:01.068478
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/AS1C04_007T04_9000002430_16461cztM0_level2.evt modeM0/AS1C04_007T04_9000002430_16461cztM0_level2_quad_clean.evt
Size (bytes)549,106,56086,143,680
Size523.7 MB 82.2 MB
Events in quadrant A4,035,759521,623
Events in quadrant B4,136,717534,736
Events in quadrant C3,969,906521,544
Events in quadrant D3,977,240507,790

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168673
B0168932
C0163002
D0169382

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75152433.233533%
B75152833.765802%
C75153374.484365%
D75152683.566201%

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 8636 7516 24 24 0.28% 0.32%
B 8636 7516 16 16 0.19% 0.21%
C 8636 7516 41 41 0.47% 0.55%
D 8636 7516 93 93 1.08% 1.24%

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 15 174 450198 2369.03 931 908 189.7
A 3 1 9160 43.51 931 908 189.7
A 0 226 8034 37.57 931 908 189.7
B 0 198 135416 744.2 935 911 180.7
B 15 35 109310 599.76 935 911 180.7
B 4 173 92849 508.68 935 911 180.7
C 7 247 175456 827.75 898 905 210.9
C 3 233 151988 716.46 898 905 210.9
C 14 238 135272 637.19 898 905 210.9
D 5 222 193893 863.07 904 875 223.6
D 2 33 144684 643.03 904 875 223.6
D 1 52 117103 519.71 904 875 223.6

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