ASTROSAT CZTI

Data Quality Report

Orbit 13890

Creation date: 2024-06-27T16:47:24.300945
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/AS1A04_010T01_9000002046_13890cztM0_level2.evt modeM0/AS1A04_010T01_9000002046_13890cztM0_level2_quad_clean.evt
Size (bytes)539,415,36091,339,200
Size514.4 MB 87.1 MB
Events in quadrant A2,890,187604,957
Events in quadrant B2,917,356609,461
Events in quadrant C3,392,308588,224
Events in quadrant D6,722,714537,107

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126202
B0127001
C0141951
D0243261

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6099771.262502%
B6099801.311690%
C60992363.869487%
D609998016.068208%

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 7025 6100 0 0 0.00% 0.00%
B 7025 6100 1 1 0.01% 0.02%
C 7024 6099 98 98 1.40% 1.61%
D 7025 6100 921 921 13.11% 15.10%

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 0 23 28582 183.2 739 723 152.1
A 1 162 11493 70.82 739 723 152.1
A 0 226 8281 49.7 739 723 152.1
B 4 173 22865 153.77 731 712 144.1
B 12 111 16749 111.32 731 712 144.1
B 11 111 14496 95.68 731 712 144.1
C 3 233 622390 3740.36 708 710 166.2
C 0 207 9639 53.72 708 710 166.2
C 13 61 4879 25.08 708 710 166.2
D 1 52 3226744 19802.59 679 663 162.9
D 5 222 405268 2483.58 679 663 162.9
D 8 195 212751 1301.86 679 663 162.9

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