ASTROSAT CZTI

Data Quality Report

Orbit 12718

Creation date: 2024-06-27T16:31:31.275649
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_174T01_9000001876_12718cztM0_level2.evt modeM0/AS1A04_174T01_9000001876_12718cztM0_level2_quad_clean.evt
Size (bytes)539,858,88087,583,680
Size514.8 MB 83.5 MB
Events in quadrant A3,483,736572,614
Events in quadrant B6,011,642498,623
Events in quadrant C3,154,567571,986
Events in quadrant D3,251,622548,264

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142973
B0221172
C0135332
D0139672

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6608761.150121%
B6608109516.570823%
C6608400.605327%
D6609450.680890%

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 7649 6610 29 29 0.38% 0.44%
B 7649 6610 806 806 10.54% 12.19%
C 7649 6610 0 0 0.00% 0.00%
D 7650 6611 8 8 0.10% 0.12%

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 15 239 127999 751.53 837 822 169.2
A 12 189 73652 430.37 837 822 169.2
A 11 29 58222 339.19 837 822 169.2
B 4 239 2664280 18226.96 766 749 146.1
B 4 206 246346 1680.66 766 749 146.1
B 3 64 49420 333.06 766 749 146.1
C 15 208 10993 54.67 805 813 186.2
C 13 61 5707 26.28 805 813 186.2
C 14 234 4204 18.21 805 813 186.2
D 1 52 140935 734.7 803 784 190.8
D 10 199 25157 127.77 803 784 190.8
D 2 234 23172 117.36 803 784 190.8

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