ASTROSAT CZTI

Data Quality Report

Orbit 07885

Creation date: 2024-06-27T15:25:11.774747
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/AS1A02_071T01_9000001078_07885cztM0_level2.evt modeM0/AS1A02_071T01_9000001078_07885cztM0_level2_quad_clean.evt
Size (bytes)449,066,88092,494,080
Size428.3 MB 88.2 MB
Events in quadrant A3,059,327594,540
Events in quadrant B3,586,083604,273
Events in quadrant C3,078,070592,536
Events in quadrant D3,436,497558,246

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133672
B0149121
C0134341
D0146751

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6478430.663785%
B64782133.288052%
C6478250.385922%
D6478981.512813%

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 7578 6479 3 3 0.04% 0.05%
B 7578 6479 88 88 1.16% 1.36%
C 7578 6479 0 0 0.00% 0.00%
D 7578 6479 94 94 1.24% 1.45%

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 11895 70.3 784 768 158.3
A 15 223 11477 67.66 784 768 158.3
A 3 1 8781 50.63 784 768 158.3
B 4 239 362003 2430.91 783 767 148.6
B 10 16 53639 355.8 783 767 148.6
B 4 81 48851 323.58 783 767 148.6
C 1 16 98657 557.33 763 769 175.6
C 13 61 5729 28.24 763 769 175.6
C 8 222 2335 8.92 763 769 175.6
D 1 20 310869 1687.0 755 733 183.8
D 2 152 100654 543.52 755 733 183.8
D 13 104 79615 429.08 755 733 183.8

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