ASTROSAT CZTI

Data Quality Report

Orbit 16806

Creation date: 2024-06-27T17:27:51.553680
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/AS1A05_004T04_9000002494_16806cztM0_level2.evt modeM0/AS1A05_004T04_9000002494_16806cztM0_level2_quad_clean.evt
Size (bytes)505,549,440105,926,400
Size482.1 MB 101.0 MB
Events in quadrant A4,712,453706,587
Events in quadrant B3,408,186719,760
Events in quadrant C3,123,825682,737
Events in quadrant D3,654,633675,527

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178552
B0137791
C0128121
D0146591

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A605360610.011565%
B60531382.279861%
C60531312.164216%
D60531482.445069%

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 7229 6055 417 417 5.77% 6.89%
B 7229 6055 6 6 0.08% 0.10%
C 7229 6055 0 0 0.00% 0.00%
D 7229 6055 38 38 0.53% 0.63%

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 1823918 12242.87 741 726 148.9
A 9 143 39919 263.18 741 726 148.9
A 0 226 6520 38.91 741 726 148.9
B 15 35 267639 1800.49 776 757 148.2
B 0 229 64196 427.98 776 757 148.2
B 0 189 20642 134.15 776 757 148.2
C 14 238 116203 670.34 745 752 172.2
C 3 233 92749 534.16 745 752 172.2
C 13 61 5315 26.49 745 752 172.2
D 1 52 600446 3207.16 766 743 187.0
D 12 218 85547 453.52 766 743 187.0
D 13 248 43030 226.15 766 743 187.0

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