ASTROSAT CZTI

Data Quality Report

Orbit 22451

Creation date: 2024-06-27T18:41:06.794089
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/AS1A07_056T01_9000003330_22451cztM0_level2.evt modeM0/AS1A07_056T01_9000003330_22451cztM0_level2_quad_clean.evt
Size (bytes)482,353,920135,020,160
Size460.0 MB 128.8 MB
Events in quadrant A3,126,543919,721
Events in quadrant B4,089,483924,003
Events in quadrant C3,332,989914,798
Events in quadrant D3,617,816877,845

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135342
B0165102
C0140572
D0152433

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6494590.908531%
B64943204.927626%
C64941342.063443%
D64932113.249653%

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 7809 6494 0 0 0.00% 0.00%
B 7809 6494 205 205 2.63% 3.16%
C 7809 6494 5 5 0.06% 0.08%
D 7808 6494 135 135 1.73% 2.08%

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 3 1 10880 62.58 808 792 161.2
A 13 254 9650 54.95 808 792 161.2
A 0 226 6819 37.39 808 792 161.2
B 10 245 936753 6372.24 795 777 146.9
B 0 197 18882 123.26 795 777 146.9
B 12 111 17493 113.8 795 777 146.9
C 14 238 127032 688.51 791 797 183.3
C 0 10 42791 229.04 791 797 183.3
C 10 22 40636 217.29 791 797 183.3
D 1 52 412882 2214.2 785 765 186.1
D 13 249 107750 574.8 785 765 186.1
D 2 120 78211 416.1 785 765 186.1

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